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  • 1
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0947-6539
    Keywords: ab initio calculations ; crystal structure ; halogen compounds ; nitrides ; selenium compounds ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Se2NBr3, a planar molecule shaped liked dividers, was formed by the reaction of SeBr4 with N(SiMe3)3, which reduced the selenium to the trivalent state. Under the same conditions, Se2NCl5 was obtained by the reaction of SeCl4 with N(SiMe3)3, retaining the tetravalent state of selenium. The molecule is formed by two edge-sharing pseudotrigonal bipyramids with selenium as their central atoms. Se2NCl5 reacts with PPh4Cl to form the Se2NCl-6 ion by the addition of a Cl- ion to only one of the two selenium atoms, resulting in pseudooctahedral coordination of this atom. Ab initio calculations for all the compounds reported confirm the experimentally determined structures.
    Additional Material: 7 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemistry - A European Journal 3 (1997), S. 568-572 
    ISSN: 0947-6539
    Keywords: cesium ; indium ; layered compounds ; metalla(crown ethers) ; pi interactions ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of CsCl with In(CH2Ph)3 yields the triorganochloroindate Cs[(PhCH2)3InCl] (1). Treatment of In(CH2Ph)3 with dry O2 gives the alkoxide [(PhCH2)2InOCH2Ph]2 (2), whereas the reaction of 1 with O2 leads to Cs2[O{PhCH2In(OCH2Ph)2}4] (3). According to X-ray structural investigations, 1 contains Cs2Cl2 four-membered rings as basic structural motif. The dimers are connected by Cs-π-electron interactions to form a layer structure. Compound 3 can be described as a metalla(crown ether) fragment coordinating two Cs+ ions. Additional shielding of the Cs centers by weak Cs-π-electron contacts was observed.
    Additional Material: 6 Ill.
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  • 4
    ISSN: 0044-8249
    Keywords: Cyclopentadienyl-Analoga ; Heterodienkomplexe ; Komplexe mit Stickstoffliganden ; Lanthanoidverbindungen ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 109 (1997), S. 2109-2109 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 6
    ISSN: 0044-2313
    Keywords: Phosphorane Iminato Complexes of Sulfur ; Syntheses ; IR Spectra ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphorane Iminato Complexes of Sulfur. Syntheses and Crystal Structures of [O3SS(NPPh3)2] · CH3CN, [SO(NPPh3)2], and [SCl(NPMe3)2]ClThe title compounds have been prepared by the reaction of Me3SiNPPh3 with SO2 and SOCl2, respectively, and by the reaction of Me3SiNPMe3 with S2Cl2. They form colourless, moisture sensitive crystals, which were characterized by IR spectroscopy and by crystal structure determinations.[O3SS((NPPh3)2)] · CH3CN: Space group Pca21, Z = 4, structure solution with 4016 observed unique reflections, R = 0.050. Lattice dimensions at -60°C: a = 1865.1, b = 1168.4, c = 1569.0 pm. The compound has a zwitterionic structure with a S—S bond length of 218.2 pm and bond lengths S—N of 161.2 and P—N of 160.1 pm.[SO(NPPh3)2]: Space group P21/c, Z = 4, structure solution with 2854 observed unique reflections, R = 0.113. Lattice dimensions at -50°C: a = 1173.1, b = 1585.6, c = 1619.2 pm, b̃ = 98.13°. The compound forms monomeric molecules, in which the positions of S and N atoms are disordered in two positions. The bond lengths are S—N 166 pm and P—N 163 pm in average.[SCl(NPMe3)2]Cl: Space group P1, Z = 2, structure solution with 2416 observed unique reflections, R = 0.038. Lattice dimensions at 20°C: a = 613.2, b = 1030.3, c = 1111.4 pm, α = 88.48°, b̃ = 88.01°, γ = 83.10°. The compound forms ions [SCl(NPMe3)2]+ and Cl-. In the cation the sulfur atom is φ-tetrahedrally coordinated with a long S—Cl distance of 246.9 pm and bond lengths S—N of 155.3 pm and P—N of 164.3 pm in average.
    Notes: Die Titelverbindungen entstehen durch Umsetzung von Me3SiNPPh3 mit Schwefeldioxid bzw. mit Thionylchlorid und von Me3SiNPMe3 mit Dischwefeldichlorid als farblose, feuchtigkeitsempfindliche Kristalle, die wir durch die IR-Spektren und durch Kristallstrukturanalysen charakterisiert haben.[O3SS(NPPh3)2)] · CH3CN: Raumgruppe Pca21, Z = 4, Strukturlösung mit 4016 unabhängigen beobachteten Reflexen, R = 0,050. Gitterabmessungen bei -60°C: a = 1865,1; b = 1168,4; c = 1569,0 pm. Die Verbindung hat eine zwitterionische Struktur mit einer S—S-Bindungslänge von 218,2 pm und Abständen S—N von 161,2 pm und P—N von 160,1 pm.[SO(NPPh3)2]: Raumgruppe P21/c, Z = 4, Strukturbestimmung mit 2854 unabhängigen beobachteten Reflexen, R = 0,113. Gitterabmessungen bei -50°C: a = 1173,1; b = 1585,6; c = 1619,2 pm, b̃ = 98,13°. Die Verbindung hat eine monomere Molekülstruktur, deren S- und N-Atomlagen in zwei Positionen fehlgeordnet sind. Die Bindungslängen betragen im Mittel für S—N 166 pm und für P—N 163 pm.[SCl(NPMe3)2]Cl: Raumgruppe P1, Z = 2, Strukturlösung mit 2416 unabhängigen beobachteten Reflexen, R = 0,038. Gitterabmessungen bei 20°C: a = 613,2; b = 1030,3; c = 1111,4 pm, α = 88,48°; b̃ = 88,01°; γ = 83,10°. Die Verbindung besteht aus Ionen [SCl(NPMe3]2+ und Cl-. Im Kation ist das Schwefelatom φ-tetraedrisch koordiniert mit einem S—Cl-Abstand von 246,9 pm und mittleren Bindungslängen S—N von 155,3 pm und P—N von 164,3 pm.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 889-893 
    ISSN: 0044-2313
    Keywords: Ga—P-Heterocubane ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: {(MesGa)3[GaP(H)Mes](PMes)4}, a Phosphorus-substituted Ga—P-HeterocubaneA mixture of MesGaCl2/GaCl3 (ratio 3:1) reacts with 5 equivalents of MesPLi2 in THF at -78°C to the title compound {(MesGa)3[GaP(H)Mes](PMes)4} (1) by use of the “dilution principle”. 1 can be obtained in 30% yield. Recrystallization of 1 from DME and toluene, respectively, gives 1 · 0.5 DME and 1 · toluene. 1 was characterized by NMR-, IR-, and MS-techniques. According to the X-ray structure determination of 1 · toluene, 1 has a heterocubane structure, one corner of which is substituted with an P(H)Mes group.
    Notes: Eine Mischung von MesGaCl2/GaCl3 (molares Verhältnis 3:1) reagiert mit fünf Äquivalenten MesPLi2 in THF bei -78°C zur Titelverbindung {(MesGa)3[GaP(H)Mes] · (PMes)4} (1) unter Anwendung des „Verdünnungsprinzipes“. 1 kann in 30% Ausbeute isoliert werden. Wird 1 aus DME oder Toluol umkristallisiert, werden 1 · 0,5 DME bzw. 1 · Toluol in Form von farblosen Kristallen erhalten. 1 wurde durch NMR-, IR- und MS-Untersuchungen charakterisiert. Nach den Ergebnissen der Röntgenstrukturanalysen von 1 · Toluol hat 1 eine Heterocuban-Struktur, wobei eine Ecke mit einer P(H)Mes-Gruppe substituiert ist.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1375-1379 
    ISSN: 0044-2313
    Keywords: Tellurium Nitride Chloride ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of the Ionic Tellurium Nitride Chloride[Te3N2Cl5(SbCl5)]+SbCl6-The title compound has been prepared by the reaction of Te2NCl5 with antimony pentachloride in CH2Cl2 suspension. It is characterized by IR spectroscopy and by a crystal structure determination. Space group P21/c, Z = 4, lattice dimensions at -70°C: a = 1535.6, b = 1259.5, c = 1572.4 pm, β = 109.30°, R = 0.031. The compound forms an ionic pair with the central group of a (TeNCl)2 molecule in which the tellurium atoms are linked by the nitrogen atoms to give a planar Te2N2 four-membered ring. One of the nitrogen atoms is coordinated by a TeCl3+ unit, the other one by an antimony pentachloride molecule. According to the IR spectra a structure like [Te2N2Cl2(TeCl4)2] is proposed for Te2NCl5.
    Notes: Die Titelverbindung wird durch Reaktion von Te2NCl5 mit Antimonpentachlorid in Dichlormethan hergestellt und durch das IR-Spektrum und eine Kristallstrukturanalyse charakterisiert. Raumgruppe P21/c, Z = 4, Gitterkonstanten bei -70°C: a = 1535,6; b = 1259,5; c = 1572,4 pm, β = 109,30°; R = 0,031. Die Verbindung bildet ein Ionenpaar, dessen Kation als zentrales Bauelement ein (TeNCl)2-Molekül enthält, in dem die Telluratome mit den Stickstoffatomen zu einem planaren Te2N2-Vierring verknüpft sind. Eines der N-Atome ist mit einem TeCl3+-Ion, das andere mit einem SbCl5-Molekül koordiniert. Aus dem Vergleich der IR-Spektren wird für Te2NCl5 eine Struktur gemäß [Te2N2Cl2(TeCl4)2] vorgeschlagen.
    Additional Material: 2 Ill.
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  • 9
    ISSN: 0044-2313
    Keywords: Zinc complexes ; organogallium compound ; indium complexes ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Difluorenyl Zinc as Alkylation Reagent in Formation of Triorgano Metallanes of Group 13. Synthesis and Crystal Structure of [GaFl3(THF)] · Toluol (Fl = Fluorenyl)Difluorenyl zinc (fluorenyl = Fl) gives with AlCl3 in THF the salt [AlCl2(THF)4][ZnCl3(THF)] (1) while the corresponding reaction with GaCl3 leads to the THF stabilized gallane [GaFl3(THF)] (2). As a result of the reactions of InCl3 and TlCl3 by the mentioned way above only the complex [InCl3(THF)3] (3) could be isolated. The mixture of solvents DME/THF gives the complex [InCl3(DME)(THF)] (4). For a comparison of the binding parameters with the zincate ion [ZnCl3(THF)]- the compound [ZnCl2(THF)2] (5) has been synthesized. 1-5 were characterized by NMR and IR techniques. 1, 2 · toluene, 3 and 5 could also be investigated by X-ray structure analysis. According this, 1 possesses a cation with a linear AlCl2 unit and a zincate ion, which is only sligthly pyramidalisized by the THF ligand. 2 contains also a distorted tetrahedral coordinated metal center. For 3 a meridional arrangement of the THF ligands was found. In 5 the absence of a negative charge leads to a shortening of the bond lengths in comparison to the zincate ion [ZnCl3(THF)]-.
    Notes: Difluorenylzink (Fluorenyl = Fl) ergibt mit AlCl3 in THF das Komplexsalz [AlCl2(THF)4][ZnCl3(THF)] (1), während die gleiche Reaktion mit GaCl3 zum THF-stabilisierten Gallan [GaFl3(THF)] (2) führt. Aus Umsetzungen mit InCl3 und TlCl3 konnte bisher nur der Komplex [InCl3(THF)3] (3) isoliert werden. Das Lösungsmittelgemisch THF/DME liefert den Komplex [InCl3(DME)(THF)] (4). Für einen Bindungslängenvergleich mit dem Zinkat-Ion [ZnCl3(THF)]- wurde der Komplex [ZnCl2(THF)2] (5) dargestellt. 1-5 wurden mittels NMR- und IR-Spektroskopie untersucht. Von 1, 2 · Toluol, 3 und 5 konnte eine Röntgenstrukturanalyse angefertigt werden. 1 besitzt danach ein Kation mit linearer AlCl2-Einheit und ein Zinkat-Ion, das durch den THF-Liganden nur wenig pyramidalisiert ist. In 2 liegt ebenfalls ein verzerrt tetraedrisch koordiniertes Metall-zentrum vor. Für 3 wurde eine meridionale Anordnung der THF-Liganden gefunden. In 5 wirkt sich die Abwesenheit einer Ladung im Vergleich zum Zinkat-Ion [ZnCl3THF]- deutlich bindungsverkürzend aus.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 592 (1991), S. 42-50 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of In(CH2Ph)3The reaction of InCl3 with PhCH2MgCl forms tribenzylindane 1, precipitating from toluene as pale yellow crystals. The crystal structure shows one dimensional chains of 1 in a zigzag arrangement. The synthesis and characterization of (PhCH2)2InCl 2 and PhCH2InCl2 3 is reported.
    Notes: Die Umsetzung von InCl3 mit PhCH2MgCl ergibt Tribenzylindan 1, welches in Form blaßgelber Kristalle aus Toluol isoliert werden kann. Die Kristallstruktur zeigt gewinkelte eindimensionale Ketten von 1. Über die Synthese und Charakterisierung von (PhCH2)2InCl 2 und PhCH2InCl2 3 wird berichtet.
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