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  • Wiley-Blackwell  (65)
  • American Chemical Society
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 595 (1991), S. 211-215 
    ISSN: 0044-2313
    Keywords: Tetraphenylphosphonium heptathiacyclo thioarsenate(III) ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetraphenylphosphonium Heptathiacyclo Thioarsenate(III), PPh4[SAsS7]From PPh4[As2SCl5] und K2S5 the title compound was obtained in acetonitrile among other products. According to an X-ray crystal structure analysis, it crystallizes in the orthorhombic space group Pna21 with a = 1 826.1(3), b = 1 312.0(2), c = 1 215.9(2) pm, Z = 4. The structure consists of PPh4+ and [SAsS7]- ions, AsS7 rings in the crown conformation as in S8 being present.
    Notes: Aus PPh4[As2SCl5] und K2S5 wurde in Acetonitril unter anderem die Titelverbindung erhalten. Nach der Röntgenstrukturanalyse mit 1474 beobachteten Reflexen (R = 7,1%, wR = 2,7%) kristallisiert sie rhombisch in der Raumgruppe Pna21; a = 1 826,1(3), b = 1 312,0(2), c = 1 215,9(2) pm, Z = 4. Die Struktur besteht aus PPh4+-und [SasS7]-Ionen, wobei AsS7-Ringe in der Kronenform wie beim S8 vorliegen.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 602 (1991), S. 149-154 
    ISSN: 0044-2313
    Keywords: Alkaline earth ; copper ; vanadium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On (Ba0,5Sr0,5)Cu2V2O8 and Ba(CuMg)V2O8Single Crystals of (A): (Ba0.5Sr0.5)Cu2V2O8 and (B) Ba(CuMg)V2O8 were prepared by solid state reactions below the melting points of the starting mixtures. Both compounds were examined by X-ray technique. They crystallize in the space groups (A): 142d [No. 122]; a = 12.65; c = 8.18 Å; Z = 8; and (B): 141/acd [No. 142]; a = 12.50; c = 8.33 Å; Z = 8. In (A) are Ba2+ plus Sr2+ and in (B) are Cu2+ plus Mg2+ in statistical distribution. The square pyramidal Cu2+ coordination in (A) is changed to an octahedron in (B), by replacing Cu2+ by Mg2+.
    Notes: Einkristalle von (A): (Ba0,5Sr0,5)Cu2V2O8 und (B): Ba(CuMg)V2O8 wurden durch Feststoffreaktionen dicht unterhalb des Schmelzpunktes der jeweiligen Reaktionsgemenge erhalten. Zellparameter und Atompositionen wurden röntgenographisch bestimmt. Die Verbindungen kristallisieren in den Raumgruppen (A): 142d, [Nr. 122] mit a = 12,65; c = 8,18 Å; Z = 8; (B): 141/acd; [Nr. 142] mit a = 12,50; c = 8,33 Å; Z = 8. In (A) sind Ba2+ und Sr2+, in (B) Cu2+ und Mg2+ statistisch verteilt. Die tetragonal pyramidale Koordination von Cu2+ in (A) ändert sich durch den Einbau von. Mg2+ in (B) in eine gestreckt oktaedrische.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 609 (1992), S. 95-98 
    ISSN: 0044-2313
    Keywords: Tungsten bronze, Cs0.29WO3 ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Novel Synthetic Access to the Tungsten Bronze Cs0.29WO3 and its Crystal StructureThe hexagonal tungsten bronze Cs0.29WO3 was obtained in form of black, prismatic crystal by the reduction of WO3 with molten cesium iodide at 700°C. Its crystal structure was determined by X-ray diffraction (399 unique observed reflexions, R = 0.058). Crystal data: a = 741.2(3), c = 760.0(5) pm, space group P6322, Z = 6. It corresponds to the known structure of hexagonal tungsten bronzes, having tungsten atoms displaced from the octahedra centres by 11.9 pm and with three different W—O bond lengths (198, 191, 187 pm). The WO6 octahedra are slightly titled mutually.
    Notes: Bei der Reaktion von WO3 in einer Caesiumiodid-Schmelze bei 700°C entsteht die hexagonale Wolframbronze Cs0.29WO3 in Form schwarzer, hexagonal-prismatischer Kristalle. Ihre Struktur wurde durch Röntgenbeugung bestimmt (399 beobachtete unabhängige Reflexe, R = 5,8%). Kristalldaten: a = 741,2(3), c = 760,0(5) pm, Raumgruppe P6322, Z = 6. Es handelt sich um die bekannte Struktur der hexagonalen Wolframbronzen mit Wolframatomen, die aus den Oktaedermitten um 11,9 pm herausgerückt sind und mit drei verschiedenen W—O-Bindungslängen (198, 191, 187 pm). Die WO6-Oktaeder sind leicht gegeneinander verkippt.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 609 (1992), S. 99-102 
    ISSN: 0044-2313
    Keywords: Diphosphete ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: X-Ray Crystal Structure Determination of 1,3-Bis(diethylamino)-1,3-dibenzyl-2,4-diphenyl-1λ5, 3λ5-diphospheteBenzylidene-diethylamino-benzylfuorophosphorane, 1, reacts with lithium bis(trimethylsilyl)amide to give the title compounds 2 and 1-diethylamino-2,3-diphenylphosphirane, 3. Only one of the stereoisomers of 2 is formed in which the two benzyl groups are located on the same side of the planar four-membered ring. 2 crystallizes in the monoclinic space group P21/n.
    Notes: Benzyliden-diethylamino-benzylfuorphosphoran, 1, reagiert mit Lithium-bis(trimethylsilyl)-amid zur Titelverbindung 2 und 1-Diethylamino-2,3-diphenylphosphiran, 3. Von 2 wird nur das Stereoisomer gebildet, bei dem die beiden Benzylgruppen auf der gleichen Seite des ebenen viergliedrigen Rings angeordnet sind. 2 kristallisiert in der monoklinen Raumgruppe P21/n.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 17-20 
    ISSN: 0044-2313
    Keywords: Barium ; zinc ; oxygen ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Structure of Ba2ZnO3Single crystals of Ba2ZnO3 were prepared by solid state reaction. It crystallizes monoclinic: space group C62h — C12/c1; a = 5.833; b = 11.376; c = 12.585 Å; β = 93.63°; Z = 8. The crystal structure is characterised by 1∞[ZnO3] chains along [100]. They are connected by Ba2+ in seven fold oxygen coordination.
    Notes: Ba2ZnO3 wurde durch Festkörperreaktion in einkristalliner Form dargestellt. Es kristallisiert in der Raumgruppe C62h — C12/c1; a = 5,833; b = 11,376; c = 12,585 Å, β = 93,63°; Z = 8. Die Kristallstruktur ist durch 1∞[ZnO3]-Ketten längs [100] gekennzeichnet. Diese werden durch Ba2+ (siebenfach durch O2- koordiniert) verknüpft.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 21-24 
    ISSN: 0044-2313
    Keywords: Barium ; manganese ; neodymium ; oxygen ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On a New Oxometallate of Manganese (II): Ba5Mn4Nd8O21Single crystals of Ba5Mn4Nd8O21 were prepared for the first time by CO2-Laser technique using H2-atmosphere. It was investigated by a single crystal X-ray diffractometer study. Ba5Mn4Nd8O21 crystallizes with tetragonal symmetry space group: C54h—I4/m; a = 14.2104 Å; c = 5.8581 Å; Z = 2. Mn2+ is found in square pyramids of oxygen.
    Notes: Ba5Mn4Nd8O21 wurde erstmals mit CO2-Lasertechnik in H2-Atmosphäre dargestellt und an Einkristallen röntgenographisch untersucht. Es kristallisiert tetragonal in der Raumgruppe C54h—I4/m; a = 14,2104 Å; c = 5,8581 Å; Z = 2. Mn2+ liegt in tetragonal pyramidaler Sauerstoffkoordination vor.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 143-148 
    ISSN: 0044-2313
    Keywords: Caesium tetraoxoplumbate ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Correction of the Crystal Structure of “Cs4PbO3” and the Structural Relationship between the Modifications of Cs4PbO4The compound that has been described as Cs4PbO3 really is Cs4PbO4. It does not crystallize in the space group P21, as assumed, but in P21/c. The observed fictitiuous violation of the extinction law for the c glide plane is due to twinning. The structure was refined using the original data as well as new data from an untwinned crystal. The denomination β-Cs4PbO4 is used to distinguish this structure from another known modification (α-Cs4PbO4). Both structures, α-Cs4PbO4 and β-Cs4PbO4, can be derived from the sphere packing of γ-plutonium when certain voids in its packing are occupied with oxygen atoms.
    Notes: Bei der früher als Cs4PbO3 beschriebenen Substanz handelt es sich tatsächlich um Cs4PbO4. Dieses kristallisiert nicht, wie angenommen, in der Raumgruppe P21, sondern in P21/c. Die beobachtete scheinbare Verletzung des Auslöschungsgesetzes für die c-Gleitspiegelebene ist auf Verzwillingung zurückzuführen. Die Struktur wurde sowohl mit den ursprünglichen Daten wie auch mit neuen Daten eines unverzwillingten Kristalls verfeinert. Die Bezeichnung β-Cs4PbO4 dient zur Unterscheidung von einer bereits bekannten Modifikation (α-Cs4PbO4). Beide Strukturen, α-Cs4PbO4 und β-Cs4PbO4, lassen sich von der des γ-Plutoniums ableiten, wenn bei dieser bestimmte Lücken mit Sauerstoffatomen besetzt werden.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 613 (1992), S. 60-62 
    ISSN: 0044-2313
    Keywords: Copper ; tantalum ; niobium ; oxygen ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Structure of Cu3NbTaO8Single crystals of Cu3NbTaO8 were prepared by solid state reaction. X-ray investigations led to triclinic symmetry, space group C1i—P1 with a = 5.179; b = 5.474; c = 6.003 Å; α = 72.85°; β = 83.39°; γ = 65.77°; Z = 1. Nb5+ and Ta5+ occupy one point position statistically. Both ions show an octahedral oxygen surrounding. Cu(1) is inside an elongated CuO6 octahedra and Cu(2) is coordinated by 5 O2- forming a distorted square pyramid. The polyhedra connection is shown and discussed.
    Notes: Einkristalle von Cu3NbTaO8 wurden durch Feststoffreaktion dargestellt. Die röntgenographische Untersuchung führte zu trikliner Symmetrie, Raumgruppe C1i  -  P1 mit a = 5,179; b = 5,474; c = 6,003 Å; α = 72,85°; β = 83,39°; γ = 65,77°; Z = 1. Nb5+ und Ta5+ besetzen eine Punktlage statistisch. Beide Ionen sind oktaedrisch von O2- koordiniert. Cu(1) zeigt ein stark gestrecktes CuO6-Oktaeder, während Cu(2) tetragonal pyramidal koordiniert ist. Die Polyederverknüpfung wird gezeigt und diskutiert.
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  • 9
    ISSN: 0044-2313
    Keywords: Rhenium tetrachloride chelate complexes ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chelate Complexes of Rhenium Tetrachloride. The Crystal Structures of ReCl4(DME) and ReCl4(DPPE) · TolanBright green crystals of ReCl4(DME) have been prepared by the reaction of rhenium pentachloride with dimethoxyethane (DME) in dichloromethane. ReCl4(DPPE) · tolan was obtained in form of red crystals by the reaction of the alkyne complex [ReCl4(Ph—C≡C—Ph)(POCl3)] with bis(diphenylphosphino)ethane (DPPE) in dichloromethane. The complexes were characterized by X-ray structure determinations.ReCl4(DME): Space group I42d, Z = 8, 829 observed unique reflexions, R = 0.022. Lattice dimensions at 19.5°C: a = b = 960.60(6), c = 2337.2(6) pm. The complex forms monomeric molecules with DME as chelating ligand; the Re—O bond lengths are 213.1 pm. The chlorine atoms, arranged in trans position to the chelating ligand, have slightly shorter Re—Cl bonds than the chlorine atoms in cis position (232,1 pm).ReCl4(DPPE) · tolan: Space group P21/n, Z = 4,4313 observed unique reflexions, R = 0.040. Lattice dimensions at -80°C: a = 1095.7(1), b = 1764.2(2), c = 1898.0(2) pm, β = 99.229(8)°. The compound consists in form of monomeric molecules [ReCl4(DPPE)] and diphenylacetylene molecules, which are incorporated in the lattice. The two phenyl rings of the tolan molecules are twisted towards each other along the C—C axis with a dihedral angle of 21°. The DPPE molecules are bonded to the rhenium atom in a chelating fashion with medium Re—P lengths of 250.4 pm. The chlorine atoms, arranged in trans position to this ligand, with Re—Cl bond lengths of 234.5 pm are slightly longer than the Re—Cl bonds in cis position with 232.3 pm.
    Notes: ReCl4(DME) wird in Form leuchtend grüner Kristalle durch Reaktion von Rheniumpentachlorid mit Dimethoxyethan (DME) in Dichlormethan hergestellt. ReCl4(DPPE) · Tolan erhielten wir als rote Kristalle bei der Reaktion des Alkinkomplexes [ReCl4(Ph—C≡C—Ph)(POCl3)] mit Bis(diphenylphosphino)ethan (DPPE) in Dichlormethan. Die Komplexe wurden durch röntgenographische Strukturanalysen charakterisiert.ReCl4(DME): Raumgruppe I42d, Z = 8, 829 beobachtete unabhängige Reflexe, R = 2,2%. Gitterkonstanten bei 19,5°C: a = b = 960,60(6); c = 2337,2(6) pm. Der Komplex bildet monomere Moleküle mit dem DME-Liganden als Chelat und Re—O-Abständen von 213,1 pm. Die hierzu trans-ständig angeordneten Chloratome haben mit 228,1 pm etwas kürzere Re—Cl-Bindungen als die cis-ständigen Cl-Atome (232,1 pm).ReCl4(DPPE) · Tolan: Raumgruppe P21/n, Z = 4, 4313 beobachtete, unabhängige Reflexe, R = 4,0%. Gitterkonstanten bei -80°C: a = 1095,7(1); b = 1764,2(2); c = 1898,0(2) pm, β = 99,229(8)°. Der Komplex bildet monomere Moleküle [ReCl4(DPPE)] und in das Gitter eingelagerte Diphenylacetylenmoleküle, deren Phenylringe einen Diederwinkel von 21° zueinander bilden. Die DPPE-Moleküle sind chelatartig am Rheniumatom gebunden mit Abständen Re—P von im Mittel 250,4 pm. Die hierzu trans-ständig angeordneten Chloratome sind mit Re—Cl—Abständen von 234,5 pm etwas länger als die cis-ständigen Re—Cl-Bindungen mit 232,3 pm.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 421-423 
    ISSN: 0044-2313
    Keywords: Barium, cobalt, erbium, oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On a New Observed Dimorphism of BaCoEr2O5Single crystals of BaCoEr2O5 were prepared by CO2-LASER technique under N2-atmosphere and investigated by X-ray single crystal methods. It crystallizes with orthorhombic symmetry, space group D2h16-Pnma (a = 12.2787, b = 5.6826, c = 7.0344 Å; Z = 4). The so far unknown crystal structure of BaCoEr2O5 belongs to the BaCuLn2O5 type forming the dimorphic substance to the previously described Ni type of BaCoEr2O5.
    Notes: BaCoEr2O5 wurde mit CO2-LASER-Technik in Stickstoffatmosphäre einkristallin dargestellt und röntgenographisch untersucht. Es kristallisiert orthorhombisch, Raumgruppe D2h16-Pnma, mit den Gitterkonstanten a = 12,2787, b = 5,6826, c = 7,0344 Å; Z = 4. Die hier untersuchten Einkristalle von BaCoEr2O5 gehören zum BaCuLn2O5-Typ und bilden die dimorphe Form zum früher beschrieben Ni - Typ von BaCoEr2O5.
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