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  • Articles  (59)
  • Articles: DFG German National Licenses  (59)
  • Chemistry  (59)
  • Syntheses  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Reactions of 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete with diphenylchlorophosphane and methyl iodide (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Heteroatom Chemistry 7 (1996), S. 341-347 
    Details
    ISSN: 1042-7163
    Keywords: Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,1,3,3-Tetrakis(dimethylamino)-1λ5,3λ5-diphosphete, 1, reacts with diphenylchlorophosphane to yield 1,1,3,3-tetrakis(dimethylamino)-4-diphenylphosphanyl-1,2-dihydro-3λ5-[1,3]diphosphetium chloride, 2, or, depending on the reaction conditions, the isomer compound 3. The cation of 2 is deprotonated by LiN[Si(CH3)3]2 to give the diphenylphosphanyl-substituted derivative of 1, i.e., compound 4. Methyl iodide adds to 1 to form 1,1,3,3-tetrakis(dimethylamino)-4-methyl-1,2-dihydro-3λ5-[1,3]diphosphetium iodide, 6. Deprotonation of 6 with n-butyllithium leads to the monomethyl derivative of 1, i.e., compound 7. Physical properties, NMR spectra, and mass spectra of compounds 2-4, 6, and 7 are described. The results of the X-ray structural analysis of 6 are reported and discussed. © 1996 John Wiley & Sons, Inc.
    Additional Material: 2 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    The Reaction of a Triorganochloroindate with Dioxygen (1997)
    Weinheim : Wiley-Blackwell
    Chemistry - A European Journal 3 (1997), S. 568-572 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chem.19970030412
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  • 3
    Electronic Resource
    Electronic Resource
    Se2NBr3, Se2NCl5, Se2NCl-6: New Nitride Halides of Selenium(III) and Selenium(IV) (1996)
    Weinheim : Wiley-Blackwell
    Chemistry - A European Journal 2 (1996), S. 1373-1378 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chem.19960021108
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  • 4
    Electronic Resource
    Electronic Resource
    Die Kristallstruktur von In(CH2Ph)3Professor Ekkehard Fluck zum 60. Geburtstag am 27. Februar 1991 gewidmet (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 592 (1991), S. 42-50 
    Details
    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.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19915920105
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  • 5
    Electronic Resource
    Electronic Resource
    Sterisch abgeschirmte Nitridokomplexe von Molybdän und Wolfram Die Kristallstrukturen von [MoN(NPh2)3] und [W4N4(NPh2)6(OnC4H9)2]Professor Josef Goubeau in memoriam (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 593 (1991), S. 99-110 
    Details
    ISSN: 0044-2313
    Keywords: Molybdenum ; Tungsten ; Nitrido Complexes ; Syntheses ; 1H, 13C NMR ; IR Spectra ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stericly Shielded Nitrido Complexes of Molybdenum and Tungsten. The Crystal Structures of [MoN(NPh2)3] and [W4N4(NPh2)6(OnC4H9)2]The reactions of MoNCl3 and WNCl3, respectively, with lithium diphenylamide in tetrahydrofurane produce the monomeric nitrido complexes MN(NPh2)3 with CN = 4 at the metal atoms. In the presence of lithium-n-butyl LiNPh2 and WNCl3 also form the tetrameric nitrido complex [W4N4(NPh2)6(OnC4H9)2] which contains WV and WVI. The compounds are characterized by their i.r. spectra, by X-ray structural analysis, and, partially, by 1H and 13C n.m.r. spectroscopy.MoN(NPh2)3: Space group P1, Z = 2, 4060 observed independent reflexions, R = 0.031. Lattice dimensions at 20°C: a = 956.2(4) pm, b = 1 015.9(2) pm, c = 1 598.1(3) pm; α = 79.06(2)°, β = 85.67(3)°, γ = 82.57(3)°. The compound forms monomeric molecules with Mo≡N bond lengths of 163.4 pm and mean Mo—NPh2 distances of 199.2 pm.[W4N4(NPh2)6(OnC4H9)2]: Space group P21/n, Z = 2, 1903 observed independent reflexions, R=0.039. Lattice parameters at 19°C: a = 1582.2(3) pm, b = 1182.4(2) pm, c = 2053.3(4) pm; β = 103.77(2)°. The compound forms centrosymmetric molecules, in which the central W-W dumb-bell (bond length 253.5 pm) is linked by the nitrido ligands of two WN2(NPh2)2=units in a T shaped order of the N-atoms.
    Notes: Die Umsetzungen von MoNCl3 bzw. WNCl3 mit Lithium-Diphenylamid in Tetrahydrofuran führen zu den monomeren Nitridokomplexen MN(NPh2)3 mit KZ = 4 an den Metallatomen. Bei Anwesenheit von Lithium-n-butyl reagiert LiNPh2 mit WNCl3 auch zu dem tetrameren, Wolfram(V) und Wolfram(VI) enthaltenden Nitridokomplex [W4N4(NPh2)6(OnC4H9)2]. Die Verbindungen werden durch ihre IR-Spektren, zum Teil durch die 1H- und 13C-Kernresonanzspektren sowie durch Röntgenstrukturanalysen charakterisiert.MoN(NPh2)3: Raumgruppe P1, Z = 2, 4060 unabhängige beobachtete Reflexe, R = 3,1%. Gitterabmessungen bei 20°C: a = 956,2(4); b = 1015,9(2); c = 1598,1(3) pm; α = 79,06(2)°; β = 85,67(3)°; γ = 82,57(3)°. Die Verbindung bildet monomere Moleküle mit Bindungslängen Mo≡N 163,4 pm und Mo—NPh2 von im Mittel 199,2 pm.[W4N4(NPh2)6(OnC4H9)2]: Raumgruppe P21/n, Z = 2, 1903 beobachtete unabhängige Reflexe, R = 3,9%. Gitterabmessungen bei 19°C: a = 1 582,2(3); b = 1 182,4(2); c = 2 053,3(4) pm; β = 103,77(2)°. Die Verbindung bildet zentrosymmetrische Moleküle, deren zentrale W - W-Hantel (Bindungslänge 253,5 pm) über die Nitridoliganden zweier WN2(NPh2)2-Einheiten mit T-förmiger Anordnung der N-Atome verknüpft ist.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19915930110
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  • 6
    Electronic Resource
    Electronic Resource
    Bonding Properties of Diphosphacyclobutadienes (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 2071-2073 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The He(I) photoelectron (PE) spectra of the diphosphacyclobutadienes 2 and 3 have been recorded. The interpretation of the first PE bands is based on SCF-MO calculations (MNDO method). It is found that the first two bands correspond to π-MOs which are mainly localized in the four-membered ring. The first two bands are shifted towards higher energy in the PE spectrum of 3; we ascribe this to an electron transfer from the four-membered ring in 3 to the phenyl substituents.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881211129
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  • 7
    Electronic Resource
    Electronic Resource
    Synthese und Eigenschaften von iPr2InCl, iPrInCl2 und (iPr2InNHtBu)2 (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 2283-2287 
    Details
    ISSN: 0009-2940
    Keywords: Indium, trialkyl derivatives ; Dialkylchloroindium ; Alkyldichloroindium ; Alkylindium dialkylamides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Properties of iPr2InCl, iPrInCl2, and (iPr2InHRtBu)2The reactions of triisopropylindium (1) with half an equivalent or two equivalents of indium (III) chloride leads to iPr2InCl (2) and iPrInCl2 (3), respectively. (iPr2InNHtBu)2 (4) can be synthesized from 2 and LiNHtBu. According to NMR, IR, and RE studies, 2-4 from dimers in solution and solid state. The X-ray analysis of 4 is reported.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891221214
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  • 8
    Electronic Resource
    Electronic Resource
    Fluorenylindate: Verbindungen mit schwachen In  -  C-Bindungen (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 11-15 
    Details
    ISSN: 0009-2940
    Keywords: Indium compounds ; Indate, tetrafluorenyl ; Indate, chlorotrifluorenyl ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Fluorenylindates: Compounds with Weak In  -  C BondsIn diethyl ether, fluorenyllithium reacts with indium(III) chloride to yield a lithium tetrafluorenylindate (1). Recrystallisation from THF gives [Li(THF)4][In(C13H9)4] (2). If the reaction is carried out in THF, the chlorotrifluorenylindate [Li(THF)4]-[ClIn(C13H9)3] (3) is isolated. According to crystal structure analyses 2 has long and weak In  -  C bonds [224.8(5) - 230.3(5) pm], while these distances in 3 are somewhat shorter [222.9 (5) - 226.7(4) pm].
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260103
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  • 9
    Electronic Resource
    Electronic Resource
    Synthese und Kristallstrukturen der Amido-Komplexe [Na(12-Krone-4)2][M{N(SiMe3)2}3] mit M = Mn, Fe und CoHerrn Prof. Dr. G. Seitz zum 60. Geburtstag gewidmet. (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 715-719 
    Details
    ISSN: 0009-2940
    Keywords: Amido Complexes ; Manganese Compounds ; Iron Compounds ; Cobalt Compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses and Crystal Structures of the Amido Complexes [Na(12-Crown-4)2][M{N(SiMe3)2}3] with M = Mn, Fe, and CoThe ionic amido complexes [Na(12-crown-4)2][M[N-(SiMe3)2}3] with M = Mn (1), Fe (2) and Co (3) were prepared by the reaction of M[N(SiMe3)2]2 (M = Mn, Co) and Fe[N-(SiMe3)2]3, respectively, with sodium bis(trimethylsilyl)amide in toluene solution in the presence of 12-crown-4. 1-3 were characterized by IR spectroscopy and by crystal structure determinations. The complexes consist of cations [Na(12-crown-4)2]+ with a sandwich-like structure and anions [M{N(SiMe3)2}3]- in which the metal atoms are planarly coordinate by the three nitrogen atoms of the bis(trimethylsilyl)amido groups.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290618
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  • 10
    Electronic Resource
    Electronic Resource
    Synthese, Eigenschaften und Kristallstrukturen der Titan(III)-Amido-Komplexe Ti[N(SiMe3)2]3, [TiCl2{N(SiMe3)2}(THF)2] und [Na(12-Krone-4)2][TiCl2{N(SiMe3)2}2] (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1401-1405 
    Details
    ISSN: 0009-2940
    Keywords: Amido complexes ; Titanium(III) compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses, Properties, and Crystal Structures of the Titanium(III) Amido Complexes Ti[N(SiMe3)2]3, [TiCl2{N(SiMe3)2}(THF)2], and [Na(12-Crown-4)2][TiCl2{N(SiMe3)2}2]TiCl3(THF)3 reacts with NaN(SiMe3)2 to furnish [TiCl2{N(SiMe3)2}(THF)2] (1), whereas in the presence of 12-crown-4 the ionic amido complex [Na(12-crown-4)2][TiCl2{N(SiMe3)2}2] (5) is obtained besides [Na(12-crown-4)2][TiCl4(THF)] (4). On the other hand, the titanium(III) amido complex Ti[N(SiMe3)2]3 (2), the crystal structure of which was solved, reacts with NaN(SiMe3)2 in the presence of 12-crown-4 with deprotonation of one of the methyl groups to give the carbometalated complex [Na(12-crown-4)2][Ti{N(SiMe3)2}2{N(SiMe 3CH2)}] (3).
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961291115
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