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  • IR spectra  (4)
  • Molybdenum  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Die Kristallstrukturen von (NH4)2[ReCl6], [ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN und [ReCl4(18-Krone-6)] (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 525-530 
    Details
    ISSN: 0044-2313
    Keywords: Rhenium Complexes ; Syntheses ; IR spectra ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structures of (NH4)2[ReCl6], [ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN and [ReCl4(18)(Crown-6)]Brown single crystals of (NH4)2[ReCl6] are formed by the reaction of NH4Cl with ReCl5 in a suspension of diethylether. [ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN crystallizes as brown crystal plates from a solution of ReCl5 in acetonitrile. Lustrous green single crystals of [ReCl4(18-crown-6)] are obtained by the reaction of 18-crown-6 with ReCl5 in a dichloromethane suspension. All rhenium compounds are characterized by IR spectroscopy and by crystal structure determinations.(NH4)2[ReCl6]: Space group Fm3m, Z = 4, 75 observed unique reflections, R = 0.01. Lattice constant at -70°C: a = 989.0(1) pm. The compound crystallizes in the (NH4)2[PtCl6] type, the Re—Cl distance is 235.5(1) pm.[ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN: Space group P1, Z = 1, 2459 observed unique reflections, R = 0.12. Lattice dimensions at -60°C: a = 859.0(1), b = 974.2(7), c = 1287.3(7) pm, α = 102.69(5)°, b̃ = 105.24(7)°, γ = 102.25(8)°. The structure consists of two symmetry-independent [ReCl2(CH3CN)4]+ ions with trans chlorine atoms, [ReCl6]2- ions, and included acetonitrile molecules. In the cations the Re—Cl bond lengths are 233 pm in average, in the anion they are 235 pm in average.[ReCl4(18-crown-6)]: Space group P21/n, Z = 4, 3 633 observed unique reflections, R = 0.06. Lattice dimensions at -70°C: a = 1040.2(4), b = 1794.7(5), c = 1090.0(5) pm, b̃ = 108.91(4)°. The compound forms a molecular structure, in which the rhenium atom is octahedrally coordinated by the four chlorine atoms and by two oxygen atoms of the crown ether molecule.
    Notes: Braune Einkristalle von (NH4)2[ReCl6] entstehen durch Reaktion von NH4Cl mit ReCl5 in einer Diethylethersuspension. [ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN kristallisiert als braune Kristallplättchen aus einer Lösung von ReCl5 in Acetonitril. Leuchtend grüne Einkristalle von [ReCl4(18-Krone-6)] entstehen durch Reaktion von 18-Krone-6 mit ReCl5 in einer Dichlormethansuspension. Die drei Rhenium-Verbindungen werden durch ihre IR-Spektren und durch Kristallstrukturanalysen charakterisiert.(NH4)2[ReCl6]: Raumgruppe Fm3m, Z = 4, 75 unabhängige beobachtete Reflexe, R = 0,01. Gitterkonstante bei -70°C: a = 989,0(1) pm. Die Verbindung kristallisiert im (NH4)2[PtCl6]-Typ, der Re—Cl-Abstand beträgt 235,5(1) pm.[ReCl2(CH3CN)4]2[ReCl6] · 2CH3CN: Raumgruppe P1, Z = 1, 2459 beobachtete unabhängige Reflexe, R = 0,12. Gitterkonstanten bei -60°C: a = 859,0(1); b = 974,2(7); c = 1287,3(7) pm, α = 102,69(5)°; b̃ = 105,24(7)°; γ = 102,25(8)°. Die Struktur besteht aus zwei symmetrieunabhängigen [ReCl2(CH3CN)4]+-Ionen mit trans-ständigen Chloratomen, [ReCl6]2--Ionen und eingelagerten Acetonitrilmolekülen. In den Kationen betragen die Re—Cl-Abstände im Mittel 233 pm, im Anion im Mittel 235 pm.[ReCl4(18-Krone-6)]: Raumgruppe P21/n, Z = 4, 3 633 beobachtete unabhängige Reflexe, R = 0,06. Gitterkonstanten bei -70°C: a = 1040,2(4); b = 1794,7(5); c = 1090,0(5) pm; b̃ = 108,91(4)°. Die Verbindung bildet eine Molekülstruktur, in der das Rheniumatom oktaedrisch von den vier Chloratomen und von zwei Sauerstoffatomen des Kronenethers koordiniert ist.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19956210404
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  • 2
    Electronic Resource
    Electronic Resource
    Halogeno-Nitrosylkomplexe von Molybdän und Wolfram. Die Kristallstrukturen von [Na2(15-Krone-5)2(CH3CN)][MoCl4(NO)2] und [Na(15-Krone-5)]2[MoF4Cl(NO)]Professor Ekkehard Fluck zum 60. Geburtstag am 27. Februar 1991 gewidmet (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 592 (1991), S. 59-72 
    Details
    ISSN: 0044-2313
    Keywords: Molybdenum ; Tungsten ; Halogenonitrosyl Complexes ; Syntheses ; IR Spectra ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Halogeno-Nitrosyl Complexes of Molybdenum and Tungsten. Crystal Structures of [Na2(15-Crown-5)2(CH3CN)][MoCl4(NO)2] and [Na(15-Crown-5)]2[MoF4Cl(NO)]MoCl2(NO)2 and WCl2(NO)2, respectively, react with excess sodium fluoride in acetonitrile at room temperature and in the presence of 15-crown-5 to give crystalline mixtures, which consist of the title compounds, respectively of [Na(15-crown-5)]2[WCl4(NO)2] and [Na(15-crown-5)]2[WF4Cl(NO)], and which can be separated by selection. The complexes are characterized by their i.r. spectra, the molybdenum compounds additionally by crystal structure determinations.[Na2(15-crown-5)2(CH3CN)][MoCl4(NO)2]: Space group P21, Z = 2, 5415 independent unique reflexions, R = 0.039. Lattice dimensions at -10°C: a = 984.3, b = 1231.1, c = 1483.0 pm, β = 105.67°. The compound consists of cations [Ne(l5-crown-5)(CH3CN)]+, in which the sodium ion is surrounded by the five O-atoms of the crown ether and by the N-atom of the acetonitrile molecule, as well as of anions, which form an ion pair {Na(15-crown-5)[MoCl4(NO)2]}-. In the in pairs the sodium ion is coordinated by the five oxygen atoms of the crown ether and by two chlorine atoms of the [MoCI4(NO)2]2- unit. The nitrosyl ligands take the cis-position a t the molybdenum atom which is in a distorted octahedrally fashion.[Na(15-crown-5)]2[MoF4Cl(NO)]. Space group C2/c, Z = 4, 1933 independent unique reflexions, R = 0.078. Lattice dimensions at -7O°C: D : 1.585.8, b = 1171.5, c = 1771.5 pm, β = 114.91°. The compound forms an ion triple, in which the sodium ions are linked to five oxygen atoms each of the crown ether molecules, and to two F-atoms of the [MoF4Cl(NO)]2- unit. The F-atom which is arranged in trans-position to the nitrosyl ligand coordinates with both sodium ions; thus an unusual T-shaped arrangement results for this F-atom. The sole terminal F-Atom and the Cl-atom are disordered in two positions.
    Notes: MoCl2(NO)2 bzw. WCl2(NO)2 reagieren mit überschüssigem Natriumfluorid in Acetonitril bei R.T. und Anwesenheit von 15-Krone-5 zu Kristallgemischen, die aus den Titelverbindungen bzw. aus [Na(15-Krone-5)]2[WCl4(NO)2] und [Na(15-Krone-5)]2[WF4Cl(NO)] bestehen, und die sich durch Auslesen trennen lassen. Die Komplexe werden durch ihre IR-Spektren, die Molybdänverbindungen zusätzlich durch Kristallstrukturanalysen charakterisiert.[Na2(15-Krone-5)2(CH3CN)][MoCl4(NO)2]: Raumgruppe P21, Z = 2, 5415 unabhängige beobachtete Reflexe, R = 3,9%. Gitterabmessungen bei -10°C: a = 984,3; b = 1 251,1; c = 1 483,0 pm, β = 105,67°. Die Verbindung besteht aus Kationen [Na(15-Krone-5)(CH3CN)]+, in denen das Natriumion von den fünf O-Atomen des Kronenethers und von dem N-Atom des Acetonitrilmoleküls umgeben ist, sowie aus Anionen, die ein Ionenpaar {Na(15-Krone-5)[MoCl4(NO)2]}- bilden. In ihnen ist das Natriumion durch die fünf O-Atome des Kronenethers und durch zwei Chloratome der [MoCl4(NO)2]2--Einheit koordiniert. Die Nitrosylliganden nehmen die cis-Positionen am verzerrt oktaedrisch koordinierten Molybdänatom ein.[Na(15-Krone-5)]2[MoF4Cl(NO)]: Raumgruppe C2/c, Z = 4, 1933 unabhängige beobachtete Reflexe, R = 7,8%. Gitterabmessungen bei -70°C: a = 1 585,8; b = 1 171,2; c = 1 771,5 pm; β = 114,91°. Die Verbindung bildet ein Ionentripel, in dem die Natriumionen mit je fünf O-Atomen der Kronenethermoleküle und mit zwei F-Atomen der [MoF4Cl(NO)]2--Einheit verbunden sind. Das in trans-Position zum Nitrosylliganden angeordnete F-Atom koordiniert mit beiden Natriumionen, so daß für dieses F-Atom eine ungewöhnliche T-förmige Anordnung resultiert. Das einzige terminal gebundene F-Atom und das Cl-Atom sind in zwei Positionen fehlgeordnet.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19915920107
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  • 3
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    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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  • 4
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    Electronic Resource
    [Sb(12-Krone-4)2(CH3CN)][SbCl6]3 und [Bi(12-Krone-4)2(CH3CN)][SbCl6]3, die ersten Trikationen von Antimon(III) und Bismut(III)Professor Hartmut Bärnighausen zum 60. Geburtstage gewidmet (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 271-276 
    Details
    ISSN: 0044-2313
    Keywords: Crown ether complexes of Sb3+ and Bi3+ ; synthesis ; IR spectra ; 121Sb Mössbauer spectrum ; X-ray structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [Sb(12-Crown-4)2(CH3CN)][SbCl6]3 and [Bi(12-Crown-4)2(CH3CN)][SbCl6]3, first Trications of Antimony(III) and Bismuth(III)The crown ether complexes [M(12-crown-4)2(CH3CN)][SbCl6]3 with M = Sb and Bi are formed by the reaction of antimony trichloride and bismuth trichloride, respectively, with antimony pentachloride in acetonitrile solution in the presence of 12-crown-4. They form colourless, moisture sensitive crystals, which were characterized by X-ray structure determinations and by IR spectroscopy. The complex with M = Sb was also characterized by 121Sb Mössbauer spectroscopy.Both complexes crystallize isotypically in the orthorhombic space group Pbcn with four formula units per unit cell.M = Sb: 3 483 observed unique reflections, R = 0.038. M = Bi: 2 958 observed unique reflections, R = 0.036. The compounds consist of SbCl6- ions and trications [M(12-crown-4)2(CH3CN)]3+, in which the M3+ ions are ninefold coordinated by the eight oxygen atoms of the crown ether molecules and by the nitrogen atom of the acetonitrile molecule. The lone pair of the M3+ ions has no steric effect.
    Notes: Die Kronenetherkomplexe [M(12-Krone-4)2(CH3CN)][SbCl6]3 mit M = Sb und Bi entstehen durch Reaktion von Antimontrichlorid bzw. Bismuttrichlorid mit Antimonpentachlorid in Acetonitrillösung in Gegenwart von 12-Krone-4. Sie bilden farblose, feuchtigkeitsempfindliche Kristalle, die wir durch kristallographische Strukturanalysen und durch die IR-Spektren charakterisiert haben. Von dem Komplex mit M = Sb wurde ein 121Sb-Mößbauer-Spektrum aufgenommen.Beide Komplexe kristallisieren isotyp in der orthorhombischen Raumgruppe Pbcn mit vier Formeleinheiten pro Elementarzelle. M = Sb: 3 483 beobachtete unabhängige Reflexe, R = 0,038. M = Bi: 2 958 beobachtete unabhängige Reflexe, R = 0,036. Die Verbindungen enthalten neben den SbCl6--Ionen Trikationen [M(12-Krone-4)2(CH3CN)]3+, in denen die M3+-Ionen durch die acht O-Atome der beiden Kronenethermoleküle und durch das N-Atom des Acetonitrilmoleküls neunfach koordiniert sind. Das freie Elektronenpaar an den M3+-Ionen bleibt ohne sterische Wirksamkeit.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19936190208
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  • 5
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    Electronic Resource
    Synthese und Kristallstrukturen der Phosphanimin-Komplexe MCl2(Me3SiNPMe3)2 mit M = Zn und Co, und CoCl2(HNPMe3)2 (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 431-437 
    Details
    ISSN: 0044-2313
    Keywords: Phosphaneimine Complexes of Zinc and Cobalt ; Synthesis ; IR spectra ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses and Crystal Structures of the Phosphaneimine Complexes MCl2(Me3SiNPMe3)2 with M = Zn and Co, and CoCl2(HNPMe3)2The molecular complexes MCl2(Me3SiNPMe3)2 (M = Zn, Co) have been prepared by the reaction of the dichlorides of zinc and cobalt with Me3SiNPMe3 in CH3CN and CH2Cl2, respectively, whereas the complex CoCl2(HNPMe3)2 has been prepared by the reaction of CoCl2 with NaF in boiling acetonitrile in the presence of Me3SiNPMe3. All complexes were characterized by IR spectroscopy and by crystal structure determinations. The complexes MCl2(Me3SiNPMe3)2 crystallize isotypically.ZnCl2(Me3SiNPMe3)2: Space group P212121, Z = 4, 2677 observed unique reflections, R = 0.024. Lattice dimensions at -70°C: a = 1243.6; b = 1319.0; c = 1464.7 pm.CoCl2(Me3SiNPMe3)2: Space group P212121, Z = 4, 3963 observed unique reflections, R = 0,071. Lattice dimensions at -80°C: a = 1236.3; b = 1317.4; c = 1457.6 pm.CoCl2(HNPMe3)2 · CH2Cl2: Space group Pbca, Z = 8, 1354 observed unique reflections, R = 0.055. Lattice dimensions at -80°C: a = 1247.3; b = 998.4; c = 2882.4 pm.All complexes have monomeric molecular structures, in which the metal atoms are coordinated in a distorted tetrahedral fashion by the two chlorine atoms and by the nitrogen atoms of the phosphaneimine molecules.
    Notes: Die Molekülkomplexe MCl2(Me3SiNPMe3)2 (M = Zn, Co) entstehen aus den wasserfreien Dichloriden von Zink und Cobalt mit Trimethylsilyl-trimethylphosphanimin in Dichlormethan bzw. Acetonitril, während der Trimethylphosphanimin-Komplex CoCl2(HNPMe3)2 aus CoCl2 mit Natriumfluorid in Gegenwart von Me3SiNPMe3 in siedendem Acetonitril gebildet wird. Die Verbindungen werden durch ihre IR-Spektren und durch Kristallstrukturanalysen charakterisiert. Die Komplexe MCl2(Me3SiNPMe3)2 (M = Zn, Co) sind miteinander isotyp.ZnCl2(Me3SiNPMe3)2: Raumgruppe P212121, Z = 4, Strukturlösung mit 2677 beobachteten unabhängigen Reflexen, R = 0,024. Gitterkonstanten bei -70°C: a = 1243,6; b = 1319,0; c = 1464,7 pm.CoCl2(Me3SiNPMe3)2: Raumgruppe P212121, Z = 4, Strukturlösung mit 3963 beobachteten unabhängigen Reflexen, R = 0,071. Gitterkonstanten bei -80°C: a = 1236,3; b = 1317,4; c = 1457,6 pm.CoCl2(HNPMe3)2 · CH2Cl2: Raumgruppe Pbca, Z = 8, Strukturlösung mit 1354 beobachteten unabhängigen Reflexen, R = 0,055. Gitterkonstanten bei -80°C: a = 1247,3; b = 998,4; c = 2882,4 pm.Alle Komplexe haben monomere Molekülstrukturen, in denen die Metallatome verzerrt tetraedrisch von den beiden Chloratomen und den N-Atomen der beiden Phosphaniminmoleküle koordiniert sind.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19946200305
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  • 6
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    Funktionalisierte Alkinkomplexe von Wolfram(VI). Synthese und Kristallstrukturen von [WCl4(Et—Se—C≡C—Se—Et)(THF)] und [WCl4(Et—Te—C≡C—Te—Et)(THF)]Professor Gerhard Fritz zum 75. Geburtstag gewidmet (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 388-392 
    Details
    ISSN: 0044-2313
    Keywords: Functionalized Alkyne Complexes of Tungsten ; Synthesis ; IR spectra ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Functionalized Alkyne Complexes of Tungsten(VI). Syntheses and Crystal Structures of [WCl4(Et—Se—C≡C—Se—Et)(THF)] and [WCl4(Et—Te—C≡C—Te—Et)(THF)]The title compounds have been prepared by reactions of [WCl4(SEt2)2] with the alkynes Et—X—C≡C—X—Et (X = Se, Te) in CCl4 solution and subsequent addition of tetrahydrofurane. Both complexes were characterized by crystal structure determinations.[WCl4(Et—Se—C≡C—Se—Et)(THF)]: Space group P21/n, Z = 4, structure determination with 2942 unique reflections, R = 0.038. Lattice dimensions at 20°C: a = 934.2, b = 1639.5, c = 1189.5 pm, β = 96.497°.[WCl4(Et—Te—C≡C—Te—Et)(THF)]: Space group P21/n, Z = 4, structure determination with 4097 unique reflections, R = 0.067, Lattice dimensions at -70°C: a = 899.2, b = 1691.9, c = 1213.3 pm, β = 96.82°.The complexes have monomeric molecular structures with the oxygen atom of the THF molecules in trans-position to the side-on bound alkyne ligands.
    Notes: Die Titelverbindungen werden aus [WCl4(SEt2)2] und den Alkinen Et—X—C≡C—X—Et (X = Se, Te) in CCl4-Lösung nach Zusatz von Tetrahydrofuran erhalten und durch Kristallstrukturanalysen charakterisiert.[WCl4(Et—Se—C≡C—Se—Et)(THF)]: Raumgruppe P21/n, Z = 4, Strukturverfeinerung mit 2942 unabhängigen Reflexen, R = 0,038. Gitterabmessungen bei 20°C: a = 934,2; b = 1639,5; c = 1189,5 pm, β = 96,497°.[WCl4(Et—Te—C≡C—Te—Et)(THF)]: Raumgruppe P21/n, Z = 4, Strukturverfeinerung mit 4097 unabhängigen Reflexen, R = 0,067. Gitterabmessungen bei -70°C: a = 899,2; b = 1691,9; c = 1213,3 pm, β = 96,82°.Beide Verbindungen haben monomere Molekülstrukturen, in denen sich das O-Atom des THF-Moleküls in trans-Position zum seitlich gebundenen Alkinliganden befindet.
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    URL: http://dx.doi.org/10.1002/zaac.19956210308
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