ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Inorganic Chemistry  (28)
  • ACM25/26; ACM25/26_Northeast_3; DATE/TIME; DEPTH, water; MOOR; Mooring; Temperature, water; Temperature recorder, Brancker; WOCE; World Ocean Circulation Experiment
  • ACM25/26; ACM25/26_Southeast_3; DATE/TIME; DEPTH, water; MOOR; Mooring; Temperature, water; Temperature recorder, Brancker; WOCE; World Ocean Circulation Experiment
  • Air-sea interaction
  • 1990-1994  (28)
Collection
Keywords
Publisher
Year
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 580 (1990), S. 18-26 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structures of [ReCl4(PhC≡CPh)]2 · 2 CH2Cl2 and PPh4[ReOCl4]Single crystals of [ReCl4(PhC≡CPh)]2 · 2 CH2Cl2 were obtained by chilling dilute solutions of the solvate [ReCl4(PhC≡CPh)POCl3] in CH2Cl2. PPh4[ReOCl4] was formed by the reaction of the diphenyl acetylene complex [ReCl5(PhC≡CPh)] with PPh4Cl · H2O in CH2Cl2 solution.[ReCl4(PhC≡CPh)]2 · 2 CH2Cl2: space group P21/c, Z = 2, 2244 observed independent reflexions, R = 0.038. Lattice parameters (19°C): a = 987.2 pm; b = 1533.9 pm; c = 1193.8 pm; β = 90.17° The compound forms centrosymmetrical dimeric molecules with ReCl2Re bridges with Re—Cl distances of 241.2 and 267.6 pm. The longer Re—Cl bond is situated in trans-position to the equatorial, side-on coordinated diphenyl acetylene ligand with mean Re—C distances of 200 pm.PPh4[ReOCl4]: space group P4/n, Z = 2, 1487 observed, independent reflexions, R = 0.047. Lattice parameters (19°C): a = b = 1272.0 pm; c = 771.3 pm. The compound crystallizes in the AsPh4[RuNCl4] type; it consists of [ReOCl4]- anions and PPh4+ cations. The anions are tetragonal with C4v symmetry and bond lengths Re—O = 165.4 pm and Re—Cl = 232.6 pm; the bond angle OReCl is 106.7°.
    Notes: Einkristalle von [ReCl4(PhC≡CPh)]2 · 2 CH2Cl2 wurden aus verdünnten Lösungen des Solvats [ReCl4(PhC≡CPh)(POCl3)] in CH2Cl2 durch Abkühlen erhalten. PPh4[ReOCl4] entstand durch Umsetzung des Diphenylacetylenkomplexes [ReCl5(PhC≡CPh)] mit PPh4Cl · H2O in CH2Cl2-Lösung.[ReCl4(PhC≡CPh)]2 · 2 CH2Cl2: Raumgruppe P21/c, Z = 2, 2244 unabhängige beobachtete Reflexe, R = 3,8%. Gitterkonstanten (19°C): a = 987,2; b = 1533,9; c = 1193,8 pm; β = 90,17°. Die Verbindung bildet zentrosymmetrische dimere Moleküle mit ReCl2Re-Brücken mit Re—Cl-Abständen von 241,2 und 267,6 pm. Die lange ReCl-Bindung befindet sich in trans-Position zu dem äquatorial angeordneten, seitlich koordinierenden Diphenylacetylenliganden mit Re—C-Abständen von im Mittel 200 pm.PPh4[ReOCl4]: Raumgruppe P4/n, Z = 2, 1487 unabhängige beobachtete Reflexe, R = 4,7%. Gitterkonstanten (19°C): a = b = 1272,0; c = 771,3 pm. Die Verbindung kristallisiert im AsPh4[RuNCl4]-Typ; sie besteht aus PPh4+- und [ReOCl4]--Ionen. Die Anionen haben C4v-Symmetrie mit Abständen ReO = 165,4 pm und ReCl = 232,6 pm bei einem OReCl-Bindungswinkel von 106,7°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0044-2313
    Keywords: Phosphaneiminato complexes of Nb, Mo, W ; reactions with NaF ; triphenylaminophosphonium chloride ; triphenyl-difluorophosphorane ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Reactions of Phosphaneiminato Complexes of Niobium, Molybdenum, and Tungsten with Sodium Fluoride. The Crystal Structures of [PPh3NH2]Cl and PPh3F2[NbCl4(NPPh3)]2 reacts with excess sodium fluoride and 15-crown-5 in acetonitrile, forming the fluoro complex [Na-15-crown-5][NbF5(NPPh3)] at room temperature. In boiling acetonitrile the solvent takes part in the cleavage of the Nb—N bond of the phosphaneiminato complex, yielding [PPh3NH2]Cl. In corresponding reactions the phosphaneiminato complexes [MoCl4(NPPh3)]2 and [WCl5(NPPh3)] undergo a cleavage of the P—N bond giving PPh3F2 in a good yield. [PPh3NH2]Cl and PPh3F2 are characterized by crystal structure analyses:[PPh3NH2]Cl: Space group Pna21, Z = 4,1796 observed independent reflexions, R = 0.030. Lattice constants at -60°C: a = 1084.7, b = 961.7, c = 1536.5. The compound consists of PPh3NH2+ ions and chloride ions, which link the cations to … HNH … Cl … HNH … Cl chains.PPh3F2: Space group Pbcn, Z = 4,987 observed independent reflexions, R = 0.044. Lattice constants at 20°C: a = 611.41, b = 1664.2, c = 1436.9. This compound has a trigonal bipyramidal structure with the fluorine atoms in the axial positions.
    Notes: Die Reaktion von [NbCl4(NPPh3)]2 mit überschüssigem Natriumfluorid in Acetonitril führt in Gegenwart von 15-Krone-5 in der Kälte zu dem Fluorokomplex [Na-15-Krone-5][NbF5(NPPh3)]. In der Siedehitze findet unter Mitwirkung des Lösungsmittels Spaltung der Nb—N-Bindung des Phosphaniminatokonplexes statt, wobei [PPh3NH2]Cl gebildet wird. Entsprechende Untersuchungen mit den Phosphaniminatokomplexen [MoCl4(NPPh3)]2 und [WCl5(NPPh3)] führen unter Spaltung der P—N-Bindung zu PPh3F2, das in guter Ausbeute erhalten wird. [PPh3NH2]Cl und PPh3F2 haben wir durch Kristallstrukturanalysen charakterisiert.[PPh3NH2]Cl: Raumgruppe Pna21, Z = 4,1796 unabhängige, beobachtete Reflexe, R = 3,0%. Gitterkonstanten bei -60°C: a = 1084,7; b = 961,7; c = 1536,5 pm. Die Verbindung besteht aus PPh3NH2+-Ionen und Chloridionen, die über Wasserstoffbrückenbindungen … HNH … Cl … HNH … Cl die Kationen zu Ketten verknüpfen.PPh3F2: Raumgruppe Pbcn, Z = 4,987 unabhängige, beobachtete Reflexe, R = 4,4%. Gitterkonstanten bei 20°C: a = 611,41; b = 1664,2; c = 1436,9 pm. Die Verbindung hat eine trigonal-bipyramidale Molekülstruktur mit den Fluoratomen in den Axialpositionen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 607 (1992), S. 177-182 
    ISSN: 0044-2313
    Keywords: Tin(IV) complexes ; syntheses ; IR-UV-VIS ; Mössbauer spectra ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tin(IV) Complexes with Tridentate Diacidic LigandsBy template reactions including bis(acetylacetonato)-dichloro-tin(IV) and O-aminophenol as well as o-aminothiophenol, benzoylhydrazine, and thiobenzoylhydrazine the tin chelates of tridentate diacidic ligands containing ligator atoms were prepared. To characterize the compound, IR, UV-VIS and Mössbauer spectroscopy were used. Crystal structure analyses demonstrate the existence of disturbed octahedral structures.Bis[acetylacetonbenzoylhydrazonato(2-)]tin(IV): space group P21/c, Z = 4, 2501 observed unique reflections, R = 0.045. Lattice dimensions at 20°C: a = 992.3, b = 2405.5, c = 1071.8pm, β = 116.94°.Bis[acetylacetonthiobenzoylhydrazonato(2-)] tin(IV): space group P21/c, Z = 4, 3603 observed unique reflections, R= 0.029. Lattice dimensions at 20°C: a = 1581.5, b = 947.8, c = 1644.9pm, β = 90.32°.
    Notes: Durch Template-Reaktionen von Bis(acetylacetonato)-dichloro-zinn(IV) mit o-Aminophenol, o-Aminothiophenol, Benzoylhydrazin und Thiobenzoylhydrazin wurden die Zinnchelate dreizähniger diacider Liganden mit- Ligatoratomen dargestellt. Die Charakterisierung der Substanzen erfolgte durch IR-, UV-VIS-und Mößbauer-Spektroskopie. Die Röntgenkristallstrukturanalysen erweisen das Vorliegen verzerrt-oktaedrischer Strukturen.Bis[acetylacetonthiobenzoylhydrazonato(2-)] zinn(IV): Raumgruppe P21/c, Z = 4, 2501 beobachtete unabhängige Reflexe, R = 4,5%. Gitterabmessungen bei 20°C: a = 992, 3; b = 2405,5; c = 1071, 8pm, β=116,94°.Bis[acetylacetonbenzoylhydrazonato(2-)] zinn(IV): Raumgruppe P21/c, Z = 4, 3603 beobachtete unabhängige Reflexe, R = 2,9%. Gitterabmessungen bei 20°C: a = 1581, 5; b = 947,8; c = 1644,9pm, β=90,32°.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0044-2313
    Keywords: Phosphorane iminato complex of niobium ; synthesis ; IR spectrum ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bis(triphenylphosphorane-iminato)niobium Trichloride, [NbCl3(NPPh3)2], a Complex with Coordination Number Five at the Niobium AtomThe title compound has been prepared from niobium pentachloride with Me3SiNPPh3 in acetonitrile solution, forming colourless, moisture sensitive crystals. They were characterized by IR spectroscopy and by an X-ray structure determination. [NbCl3(NPPh3)2] crystallizes monoclinically in the space group Cc with four formula units per unit cell, 3682 observed, unique reflections, R = 0.042%. Lattice dimensions at 20°C: a = 1025.1(2); b = 1870.6(6); c = 1832.5(5) pm, β = 91.83(2)°. The niobium atom of the complex is coordinated in a distorted trigonal bipyramidal fashion, while the nitrogen atoms of the two phosphorane iminato ligands are in equatorial position along with one chlorine atom. NbN and PN distances accord with double bonds; with a mean value of 242.0 pm the Nb—Cl distances are remarkably long.
    Notes: Die Titelverbindung entsteht in Form farbloser, feuchtigkeitsempfindlicher Kristalle bei der Reaktion von Niobpentachlorid mit Me3SiNPPh3 in Acetonitrillösung. Sie wird durch das IR-Spektrum und eine röntgenographische Strukturanalyse charakterisiert. [NbCl3(NPPh3)2] kristallisiert monoklin in der Raumgruppe Cc mit vier Formeleinheiten pro Elementarzelle, 3682 beobachtete unabhängige Reflexe, R = 4,2%. Gitterabmessungen bei 20°C: a = 1025,1(2); b = 1870,6(6); c = 1832,5(5) pm, β = 91,83(2)°. In dem Komplex ist das Niobatom verzerrt trigonal-bipyramidal koordiniert, wobei die N-Atome der beiden Phosphaniminatoliganden zusammen mit einem Chloratom äquatorial angeordnet sind. NbN- und PN-Abstände entsprechen Doppelbindungen; die Nb—Cl-Abstände sind mit dem Mittelwert von 242,0 pm auffällig lang.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 615 (1992), S. 39-42 
    ISSN: 0044-2313
    Keywords: Bis(7-isopropyl-8-quinolinato)nickel(II) ; crystal structure ; association of nickel 8-quinolates ; steric hindrance ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chelates of 8-Quinolinol Derivatives. XII. Crystal and Molecular Structure of Bis(7-isopropyl-8-quinolinato)nickel(II)The crystal and molecular structure of bis(7-isopropyl-8-quinolinato)nickel(II) was determined by X-ray diffraction. The structure is monoclinic with the space group P21/n (Z = 2, 1403 observed independent reflections, R = 0.049. Lattice dimensions at 20°C: a = 1328.3(5) pm, b = 632.8(2) pm, c = 1330.0(5) pm, β = 112.99(3)°). The coordination of the nickel atom is planar with the quinoline rings in trans position.
    Notes: Die Kristallstruktur von Bis(7-isopropylchinolin-8-olato)nickel(II) wurde durch eine Röntgenkristallstrukturuntersuchung bestimmt. Es liegt ein monoklines Kristallsystem mit der Raumgruppe P21/n vor (Z = 2, beobachtete unabhängige Reflexe 1403, R = 4,9%, Gitterabmessungen bei 20°C: a = 1328,3(5) pm, b = 632,8(2) pm, c = 1330,0(5) pm, β = 112,99(3)°). Das Nickelatom ist planar koordiniert mit den beiden Chinolinringen in trans-Stellung.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 0044-2313
    Keywords: Vanadium Complexes ; syntheses ; EPR spec-tra, absorption spectra ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vanadium Complexes with Tridentate Diacidic Ligands. The Crystal Structures of Bis[acetylacetonato-thiobenzoylhydrazonato(2-)]vanadium(IV), Methoxo-oxo-[salicylaldehyd-thiobenzoylhydrazonato(2-)]vanadium(V), and Methoxo-oxo-[salicylaldehydbenzoylhydrazonato(2-)]methanol Vanadium(V)By template reactions of bis(acetylacetonato)oxovanadium(IV) and bis(salicylaldehydato)oxo-vanadium(IV), respectively, with benzoylhydrazine, thiobenzoylhydrazine, and 2-aminophenol the vanadium(IV) complexes V(LLL)2 of tridentate azomethine ligands LLL were synthesized. The complexes were characterized by EPR spectroscopy and by absorption spectroscopy. From the complex V(LLL)2 (1), in which LLL is acetyl-aceton-thiobenzoydrazonate(2-), the crystal structure analysis was solved. The vanadium atom in 1 is coordinated trigonal-prismatically by two N, 0 and S atoms. Furthermore, the 0x0 vanadium(V) complexes[VO(LLL)(OCH,)] (6) with LLL = salicylaldehyd-thio-benzoylhydrazonato(2-) and [VO(LLL)(OCH3)· -CH3OH] (7) with LLL = salicylaldehydbenzoylhydrazonato(2-) were identified by X-ray diffraction and by IR spectroscopy in the reaction products.Crystallographic data for 1, 6, and 7 see „Inhaltsübersicht“.
    Notes: Durch template-Reaktionen von Bis(acetylacetonato)-oxovanadium(IV) bzw. Bis(salicylaldehydato)-oxovanadium(IV) mit Benzoylhydrazin, Thiobenzoylhydrazin und 2-Aminophenol wurden die Vanadium(IV)-komplexe V(LLL)2 mit den dreizähnigen diaciden Azomethinliganden LLL synthetisiert. Die Komplexe werden durch ihre EPR-Spektren und durch die Absorptionsspektren charakterisiert; von dem Komplex V(LLL)2 (1) mit LLL = acetylaceton-thiobenzoylhydrazonato(2-) wurde eine Kristallstrukturanalyse angefertigt. Danach ist das Vanadiumatom trigonal-prismatisch von je zwei S-, O- und N-Atomen des Liganden LLL umgeben. In den Reaktionsprodukten wurden daneben röntgenstrukturanalytisch und IR-spektroskopisch die Oxovanadium(V)-komplexe [VO(LLL)(OCH3)] (6) mit LLL = salicylaldehyd-thiobenzoylhydrazonato(2-) und [VO(LLL)(OCH3)] · CH3OH (7) mit LLL = salicylaldehydbenzoylhydrazonato(2-) identifiziert.1: Raumgruppe P21/c, Z = 4, 1205 beobachtete unabhängige Reflexe, R = 4,8%. Gitterabmessungen bei 20°C: a = 923,1(2); b = 1156,2(2); c = 2341,3(5) pm; β = 101,30(3).6: Raumgruppe P21/n, Z = 4, 1872 beobachtete unabhängige Reflexe, R = 4,4%. Gitterabmessungen bei 20°C: a = 742,2(1); b = 1148,0(1); c = 1787,8(2) pm, β = 96,48(1)°. Das Vanadiumatom in 6 ist verzerrt tetragonal-pyramidal koordiniert mit dem Oxoliganden in Apical-Position.7: Raumgruppe P21/c, Z = 4, 992 beobachtete unabhängige Reflexe, R = 5,9%. Gitterabmessungen bei 20°C: a = 816,6(2); b = 1698,6(3), c = 1224,1(2) pm; β = 104,20(3)°. Das Vanadiumatom in 7 ist verzerrt oktaedrisch koordiniert mit dem O-Atom des Methanol-Moleküls in trans-Stellung zum Oxoliganden.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 507-512 
    ISSN: 0044-2313
    Keywords: Phosphoraneiminato Complex of Molybdenum ; Synthesis ; IR Spectrum ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [Mo(NPPh3)4]2+ [MoNCl3(NPPh3)]2- · C7H8, a Phosphoraneiminato Complex with a Dication of Molybdenum(VI).The title compound was prepared by the reaction of MoNCl3 with Me3SiNPPh3 in acetonitrile solution. Red single crystals separated upon addition of toluene. They were characterized by IR spectroscopy and by an X-ray structure determination. (Space group P1, Z = 2, 6918 observed unique reflections, R = 0.059. Lattice dimensions at 20°C: a = 1 181.4, b = 2 021.4, c =2 409.7pm; α = 65.87°, β = 101.09°, γ= 78.97°). In the dication [Mo(NPPh3)4]2+ the molybdenum atom is surrounded in a tetrahedral fashion by the four nitrogen atoms of the phosphorane iminato ligands. The MoN and PN bond lengths correspond well with double bonds. In the two anions [MoNCl3(NPPh3)]-, which occur in different conformations, the molybdenum atoms are fivefold coordinated by the terminal nitride ligand Mo≡N: in axial positions and by the three chlorine atoms and the nitrogen atom of the (NPPh3)- ligand in the equatorial positions.
    Notes: Die Titelverbindung entsteht in Form leuchtend roter Einkristalle bei der Einwirkung von Me3SiNPPh3 auf MoNCl3 in Acetonitrillösung nach Zugabe von Toluol. Sie wird durch das IR-Spektrum und eine röntgenographische Strukturanalyse charakterisiert. Raumgruppe P1, Z = 2, 6918 beobachtete unabhängige Reflexe, R = 5,9%. Gitterabmessungen bei 20°C: a = 1 181,4; b = 2 021,4; c = 2 409,7pm; α = 65,87°; β = 101,09°; γ= 78,97°. In dem Dikation [Mo(NPPh3)4]2+ ist das Molybdänatom tetraedrisch von den vier N-Atomen der Phosphaniminatoliganden umgeben mit MoN- und PN-Abständen, die Doppelbindungen entsprechen. Die beiden symmetrieunabhängigen Anionen [MoNCl3(NPPh3)]- besitzen verschiedene Konformationen. In ihnen sind die Molybdänatome fünffach von dem terminalen Nitridoliganden Mo≡N: in axialer Position und von den drei Chloratomen und dem N-Atom des Phosphaniminatoliganden Äquatorial koordiniert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 0044-2313
    Keywords: Polytellurides ; Syntheses ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structures of the Polytellurides [Ca(DMF)6]Te4, [Sr(15-Crown-5)2]Te4 · H2O, {[BaCl(18-Crown-6)(DMF)2]2[BaCl(18-Crown-6)(DMF) (H2O)]2(Te4)2}, and [Ph3PNPPh3]2Te5 · 2 DMFThe title compounds were formed by alkalimetal polytelluride solutions in dimethylformamide (DMF) in the presence of the corresponding counter ions as well as in the presence of 15-crown-5 or 18-crown-6. Single crystals were obtained upon using additional diethylether.[Ca(DMF)6]Te4: Space group C2/c, Z = 4, 1024 observed unique reflections, R = 0.055. Lattice dimensions at -70°C: a = 1776.1; b = 813.0 c = 2545.9pm; β = 102.90°. The compound consists of centrosymmetric [Ca(DMF)6]2+ ions, in which the calcium ions are octahedrally coordinated by the six oxygen atoms of the DMF molecules, and chain-like Te42-[Sr)15-crown-5)2]Te4 · H2O: Space group C2/c, Z = 4, 3322 observed unique reflections, R = 0.058. Lattice dimensions at -70°C: a = 1450.5; b = 1407.3; c = 1660.9 pm; β = 110.22°. The compounds forms centrosymmetric cations [Sr(15-crown-5) 2]2+, in which the Sr2+ ion is sandwich-like surrounded by the ten oxygen atoms of the crown ether molecules, and chain-like Te42- ions, which are associated in the lattice forming polymeric chains.{[BaCl(18-crown-6)(DMF) 2]2[BaCl(18-crown-6)(DMF)· (H2O)] 2(Te4)2}: Space group P1, Z = 1, 3189 observed unique reflections, R = 0.054. Lattice dimensions at 19°C: a = 986.1; b = 1052.8; c = 2696.4 pm; α = 89.34°; β = 88.68°; γ = 89.56°. The compound consists of chain-like Te42- ions without symmetry and of the two somewhat different cations [BaCl(18-crown-6)(DMF) 2]22+, in which the Ba2+ ions dimerize via centroysmmetric rings. Along with the six oxygen atoms of the crown ether molecules and the oxygen atoms of the DMF molecules, the oxygen atoms of the DMF and water molecule, respectively, the Ba+ ions achieve coordination number ten.[Ph3PNPPh3]2Te5 · 2DMF: Space group Pc, Z = 2, 5971 observed unique reflections, R = 0.058. Lattice dimensions at 20°C: a = 20°C: a = 1085.2; b = 1287.0; c = 2715.9 pm; β = 90.19°. The compounds consists of [Ph3PNPPh3]+ ions, chain-like Te52- ions, and incorporate DME molecules without bonding interaction. The 52- ions are associate via polymeric chains in which left- and right handed individuals are alternating.
    Notes: Die Titelverbindungen entstehen aus Alkalipolytelluridlösungen in Dimethylformamid (DMF) in Gegenwart der entsprechenden Gegenionen und der Kronenether 15-Krone-5 bzw. 18-Krone-6. Einkristalle werden durch Zusatz von Diethylether gebildet.[Ca(DMF)6]Te4: Raumgruppe C2/c, Z = 4, 1024 beobachtete unabhängige Reflexe, R = 0,055. Gitterabmessungen bei -70°C: a =1 776,1; b =813,0; c = 2 545,9 pm; β = 102,90°. Die Verbindung besteht aus zentrosymmetrischen Kationen [Ca(DMF)6]2+, in denen die Calciumionen oktaedrisch von den sechs O-Atomen der DMF-Moleküle umgeben sind, und Te42--Ionen mit Kettenstruktur.[Sr(15-Krone-5)2]Te4 · H2O: Raumgruppe C2/c, Z = 4, 3322 beobachtete unabhängige Reflexe, R = 0,058. Gitterabmessungen bei -70°C: a = 1 450,5; b = 1 407,3; c = 1 660,9 pm; β = 110,22°. Die Verbindung bildet Kationen [Sr(15-Krone-5)2]2+, in denen das Strontiumion zentrosymmetrisch und sandwichartig von den zehn O-Atomen der beiden Kronenethermoleküle umgeben ist, sowie kettenförmigen Te42--Ionen, die im Gitter zu polymeren Tellursträngen assoziiert sind.{[BaCl(18-Krone-6)(DMF)2]2[BaCl(18-Krone-6)(DMF)· (H2O)]2(Te4)2}: Raumgruppe P1, Z = 1, 3189 beobachtete unabhängige Reflexe, R = 0,054. Gitterabmessungen bei 19°C: a = 986,1; b = 1 052,8; c = 2 696,4 pm; α = 89,34°; β = 88,68°; γ= 89,56°. Die Verbindung besteht aus kettenförmigen Tetratelluridionen ohne Symmetrie und den beiden etwas verschiedenen Kationen [BaCl(18-Krone-6)(DMF)2]22+ und [BaCl(18-Krone-6)(DMF)(H2O)]22+. In diesen sind die Bariumionen zentrosymmetrisch über BaCl2Ba-Brücken dimerisiert, wodurch die Ba2+-Ionen mit den sechs O-Atomen des Kronenethers und den O-Atomen der DMF-Moleküle bzw. denen des DMF- und des H2O-Moleküls die Koordinationszahl zehn erreichen.[Ph3PNPPh3]2Te5 · 2 DMF: Raumgruppe Pc, Z = 2, 5971 beobachtete unabhängige Reflexe, R = 0,058. Gitterabmessungen bei 20°C: a = 1 085,2; b = 1 287,0; c = 2 715,9 pm; β = 90,19°. Die Verbindung besteht aus [Ph3PNPPh3]+-Ionen, kettenförmigen Pentatelluridionen und eingelagerten DMF-Molekülen ohne bindende Wechselwirkung. Die Te52--Ionen sind zu unendlichen Ketten assoziiert, wobei links- und rechtsdrehende Individuen einander abwechseln.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 329-333 
    ISSN: 0044-2313
    Keywords: Phosphoraneiminato Complexes of Iodine ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphoraneiminato Complexes of Iodine. Syntheses and Crystal Structures of Ph3PNIO2 and Ph3PNSiMe3 · I2Ph3PNIO2 has been prepared as yellow crystals by the reaction of Ph3PNSiMe3 with I2O5 in boiling acetonitrile, whereas the molecular complex Ph3PNSiMe3 · I2 is formed as brown crystals by the reaction of Ph3PNSiMe3 with iodine in acetonitrile solution. Both complexes were characterized by crystal structure determinations.Ph3PNIO2: Space group P21/n, Z = 4, 2 858 observed unique reflections, R = 0.039. Lattice dimensions at 19°C: a = 972.8(2), b = 1 743.4(3), c = 1 073.7(2) pm, β = 115.46(3)°. The compound forms monomeric molecules with pyramidal geometry at the iodine atom. The bond angle PNI (126.9°) is unusually small; the PN bond length of 159.2 pm corresponds with a double bond.Ph3PNSiMe3 · I2: Space group P1, Z = 2, 3 560 observed unique reflections, R = 0.033. Lattice dimensions at 19°C: a = 941.2(2), b = 1 041.7(2), c = 1 287.4(3) pm, α = 78.34(1)°, β = 72.00(2)°, γ = 86.08(2)°. The compound forms monomeric molecules, in which the I2 molecule and the nitrogen atom of the phosphoraneimine molecule realize a linear N—I—I axis with a bond length N—I of 243.2 pm.
    Notes: Ph3PNIO2 entsteht als gelbe Kristalle durch Reaktion von Ph3PNSiMe3 und I2O5 in siedendem Acetonitril, während der Molekülkomplex Ph3PNSiMe3 · I2 aus Ph3PNSiMe3 und Iod bei Raumtemperatur in Acetonitril in Form brauner Kristallnadeln gebildet wird. Beide Komplexe haben wir durch röntgenographische Strukturanalysen charakterisiert.Ph3PNIO2: Raumgruppe P21/n, Z = 4, 2858 beobachtete unabhängige Reflexe, R = 0,039. Gitterabmessungen bei 19°C: a = 972,8(2); b = 1 743,4(3); c = 1 073,7(2) pm, β = 115,46(3)°. Die Verbindung bildet monomere Moleküle mit pyramidaler Geometrie am Iodatom. Der Bindungswinkel PNI ist mit 126,9° ungewöhnlich klein; der Abstand PN entspricht mit 159,2 pm einer Doppelbindung.Ph3PNSiMe3 · I2: Raumgruppe P1, Z = 2, 3 560 beobachtete unabhängige Reflexe, R = 0,033. Gitterabmessungen bei 19°C: a = 941,2(2); b = 1 041,7(2); c = 1 287,4(3) pm; α = 78,34(1)°; β = 72,00(2)°; γ = 86,08(2)°. Die Verbindung bildet monomere Moleküle, in denen das I2-Molekül mit dem N-Atom des Phosphanimins eine lineare N—I—I-Achse mit einem N—I-Abstand von 243,2 pm realisiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 343-345 
    ISSN: 0044-2313
    Keywords: Hexamethyl guanidinium cation ; tetrachloro iron(II) anion ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Concerning the Reaction of Cp2TiCl2 with [C(NMe2)3][(CO)4FeC(O)NMe2] - Crystal Structure of [C(NMe2)3]2[FeCl4]The title compound forms by the reaction of Cp2TiCl2 with [C(NMe2)3][(CO)4FeC(O)NMe2] in THF solution. It crystallizes in the space group Pbcn with a = 1 566.6(3); b = 976.4(2); c = 1 580.4(4) pm; Z = 4; R = 3.8%. Each [FeCl4]2- in is surrounded by eight cations. Two cations each are connected with one Cl atom by relatively short H … Cl contacts leading to a distortion of the tetrahedral geometry of the anion.
    Notes: Die Titelverbindung entsteht bei der Umsetzung von Cp2TiCl2 mit [C(NMe2)3][(CO)4FeC(O)NMe2] in THF-Lösung. Sie kristallisiert in der Raumgruppe Pbcn mit a = 1 566,6(3); b = 976,4(2); c = 1 580,4(4) pm; Z = 4; R = 3,8%. Jedes [FeCl4]2- Ion ist von acht Kationen umgeben. Je zwei Kationen sind über relativ kurze H … Cl Kontakte mit einem Cl-Atom verbunden, was zu einer Verzerrung der Tetraedergeometrie des Anions führt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...