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  • Syntheses  (10)
  • synthesis  (7)
  • Molybdenum  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 525-530 
    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.
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  • 2
    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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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1205-1208 
    ISSN: 0044-2313
    Keywords: Osmium Nitridotrichloride ; synthesis ; IR spectrum ; magnetic susceptibility ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Osmium Nitridotrichloride, OsNCl3OsNCl3 was prepared by the reaction of (NH4)2[OsNCl5] with chlorine at 300°C, forming a black, X-ray amorphous moisture sensitive, paramagnetic powder which was characterized by IR spectroscopy and measurement of the magnetic susceptibility in the range of 5-300 K.
    Notes: OsNCl3 wird als schwarzes, röntgenamorphes, feuchtigkeitsempfindliches paramagnetisches Pulver durch Reaktion von (NH4)2[OsNCl5] mit Chlor bei 330°C hergestellt und IR-spektroskopisch sowie durch magnetische Suszeptibilitätsmessungen im Bereich von 5-300 K charakterisiert.
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  • 4
    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.
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  • 5
    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.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 133-138 
    ISSN: 0044-2313
    Keywords: Benzamidinium hexachlorostannate ; synthesis ; crystal structure ; i.r. spectrum ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Benzamidinium Hexachlorostannate: Synthesis and Crystal Structure[Ph—C(NH2)2SnCl6] has been prepared by the reaction of hydrogen chloride with the amidinato complex [Ph—C(NSiMe3)2SnCl3] in CH2Cl2 solution, forming colourless crystals. which were characterized by IR spectroscopy as well as by an X-ray structure determination. Space group P21/c, Z = 4, 3070 observed unique reflexions, R = 0.029. Lattice dimensions at -50°C: a = 892.5, b = 1076.7, c = 1175.6 pm, β = 109.3°. The compound consists of benzamidinium ions C6H5—C(NH2)2+ and anions SnCl62-, which are connected by a network of N—H…Cl hydrogen bridges.
    Notes: [Ph—C(NH2)2]2SnCl6 entsteht in Form farbloser Einkristalle durch Einwirkung von Chlorwasserstoff auf eine Lösung des Amidinatokomplexes [Ph—C(NSiMe3)2SnCl3] in Dichlormethan. Die Verbindung wird durch das IR-Spektrum und durch eine röntgenographische Strukturanalyse charakterisiert. Raumgruppe P21/c, Z = 4, 3070 beobachtete unabhängige Reflexe, R = 2,9%. Gitterabmessungen bei -50°C: a = 892,5; b = 1076,7; c = 1175,6 pm; β = 109,3°. Die Verbindung besteht aus Benzamidinium-Kationen C6H5—C(NH2)2+ und SnCl62--Ionen, in denen ein Netz von N—H…Cl-Wasserstoffbrücken besteht.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 618 (1992), S. 93-97 
    ISSN: 0044-2313
    Keywords: Crown ether complex of antimony ; synthesis ; 121Sb-Mössbauer spectrum ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis, Crystal Structure, and 12Sb-Mössbauer Spectrum of [SbCl2(18-Crown-6)]+SbCl6-The title compound, which has been prepared by the reaction of antimony trichloride and antimony pentachloride in the presence of 18-crown-6 in acetonitrile solution, is characterized by its 121Sb-Mössbauer spectrum and by an X-ray structure determination. Space group P21, Z = 2, 2439 observed unique reflections, R = 0.045, wR = 0.043. Lattice dimensions at -80°C: a = 780.6(7), b = 1297.5(9), c = 1 278.5(10) pm, β = 100.56(7)°. The structure of [SbCl2(18-crown-6)]+SbCl6- contains cations in which the antimony atom in the first coordination sphere is surrounded in a φ-trigonal-bipyramidal fashion by two oxygen atoms of the crown ether in axial position as well as in the equatorial position by the two chlorine atoms and the lone electron pair.
    Notes: Die Titelverbindung entsteht aus Antimontrichlorid und Antimonpentachlorid in Gegenwart von 18-Krone-6 in Acetonitrillösung. Sie wird durch ihr 121Sb-Mößbauer-Spektrum und durch eine röntgenographische Strukturanalyse charakterisiert. Raumgruppe P21, Z = 2, 2439 beobachtete unabhängige Reflexe, R = 4,50%, wR = 4,25%. Die Gitterkonstanten betragen bei -80°C: a = 780,6(7); b = 1 297,5(9); c = 1 278,5(10) pm, β = 100,56(7)°. [SbCl2(18-Krone-6)]+SbCl6- enthält Kationen, in denen das Antimonatom in erster Koordinationssphäre φ-trigonal-bipyramidal von zwei O-Atomen des Kronenethers in Axialposition und von den beiden Cl-Atomen sowie dem freien Elektronenpaar äquatorial umgeben ist.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 606 (1991), S. 109-117 
    ISSN: 0044-2313
    Keywords: Pentachlorohenate(IV)-acetonitrile solvate ; synthesis ; IR spectrum ; 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 [Li(12-Crown-4)2][ReCl5(CH3CN)] · CH3CNThe title compound has been prepared by the reaction of lithium chloride with rhenium pentachloride in the presence of 12-crown-4 in acetonitrile solution.[Li(12-crown-4)2][ReCl5(CH3CN)] · CH3CN has been characterized by IR spectroscopy as well as by an X-ray structure determination. Space group P1, Z = 2, 4 450 observed unique reflections, R = 0.047, Lattice dimensions at 20°C: a = 1 445.8, b = 1 463.2, c = 1 580.2 pm, α = 89.28°, β = 114.19°, γ = 89.40°. The compound is ionic, the cation being formed by a lithium ion coordinated by the eight oxygen atoms of two crown ether molecules 12-crown-4 in sandwich fashion. In the anions [ReCl5(CH3CN)]- the rhenium atoms are in a distorted octahedral shape by the five chlorine atoms and by the N atom of the acetonitrile molecule. The two crystallographically independent cations and anions, respectively, are only slightly different.
    Notes: Die Titelverbindung wurde durch Reaktion von Lithiumchlorid mit Rheniumpentachlorid in Gegenwart von 12-Krone-4 in Acetonitrillösung hergestellt und durch ihr IR-Spektrum und durch eine röntgenographische Strukturanalyse charakterisiert.[Li(12-Krone-4)2][ReCl5(CH3CN)] · CH3CN kristallisiert triklin in der Raumgruppe P1 mit zwei Formeleinheiten pro Elementarzelle, 4 450 beobachtete unabhängige Reflexe, R = 4,7%. Gitterabmessungen bei 20°C: a = 1 445,8; b = 1 463,2; c = 1 580,2 pm; α = 89,28°; β = 114,19°; γ = 89,40°. Die Verbindung hat einen ionischen Aufbau, in dem die Lithiumionen sandwichartig von den acht Sauerstoffatomen zweier Kronenethermoleküle 12-Krone-4 koordiniert sind. In den Anionen [ReCl5(CH3CN)]- sind die Rheniumatome verzerrt oktaedrisch von den fünf Chloratomen und von dem N-Atom des Acetonitrilmoleküls umgeben. Die beiden kristallographisch unabhängigen Kationen bzw. Anionen unterscheiden sich nur wenig voneinander.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 775-778 
    ISSN: 0044-2313
    Keywords: Nitrido complex of tungsten ; synthesis ; IR-spectrum ; 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 Tetrameric Nitrido Complex [Cu(CH3CN)4]2[W4N4Cl14(CH3CN)2].The title compound has been prepared by the reaction of CuCl with WNCl3 in acetonitrile solution, forming red, moisture sensitive crystals. They were characterized by IR spectroscopy and by an X-ray structure determination. Space group I2/a, Z = 4, 2 027 observed unique reflections, R = 0.049. Lattice dimensions at -80°C: a = 2 527.0, b = 971.9, c = 2 137.5 pm, β = 106.01°. The compound consists of [Cu(CH3CN)4]+ ions, which are arranged to form strands, and of anions [W4N4Cl14(CH3CN)2]2-, in which the tungsten atoms were located at the vertices of a square and are linked with one another via linear W≡N—W bridges. Two of the four tungsten atoms have four chlorine atoms as terminal ligands, the other two tungsten atoms have three chlorine atoms and an acetonitrile molecule as terminal ligands.
    Notes: Die Titelverbindung wird durch Umsetzung von Kupfer(I)chlorid mit WNCl3 in Acetonitril in Form roter feuchtigkeitsempfindlicher Kristalle gewonnen. Sie wird durch das IR-Spektrum und eine röntgenographische Strukturanalyse charakterisiert. Raumgruppe I2/a, Z = 4, 2 027 beobachtete unabhängige Reflexe, R = 4,9%. Gitterkonstanten bei -80°C: a = 2 527,0; b = 971,9; c = 2 137,5 pm; β = 106,01°. Die Verbindung besteht aus [Cu(CH3CN)4]+-Ionen, die zu Strängen angeordnet sind, und Anionen [W4N4Cl14(CH3CN)2]2-, in denen die Wolframatome an den Ecken eines Quadrats angeordnet sind und über lineare W≡N—W-Brücken verknüpft sind. Zwei der Wolframatome haben je vier Chloratome als terminale Liganden, die beiden anderen je drei Chloratome und je ein N-Atom eines Acetonitrilmoleküls als terminale Liganden.
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  • 10
    ISSN: 0044-2313
    Keywords: Polytellurido complexes of copper and silver ; synthesis ; 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 Polytellurido Complexes (PPh4)4[M2Te12] of Copper(I) and Silver(I)The title compounds have been prepared as black crystal needles by reactions of Na2Te3 with CuCl and AgNO3, respectively, in dimethylformamide in the presence of PPh4Br. With regard to the large cell dimensions the crystal structure determinations were done by an imaging plate instrument.(PPh4)4[Cu2Te12]: Space group P21/n, Z = 6, 51 338 detected reflections, structure determination with 14 177 unique reflections with I 〉 4σ(I), R = 0.081. Lattice dimensions at - 50°C: a = 1 704.5, b = 1 694.5, c = 5 044 pm, β = 94.20°.(PPh4)4[Ag2Te12]: Space group P21/n, Z = 6, 80 811 detected reflections, structure determination with 16 092 unique reflections with I 〉 3σ(I), R = 0.052. Lattice dimensions at - 50°C: a = 1 703.8, b = 1 722.9, c = 5 123 pm, β = 94.65°.The structures of the isotypic compounds consist of six symmetry independent PPh4+ ions and two symmetry independent anions [M2Te12]4-, in which the metal atoms of two (MTe4)--fivering fragments are linked by a Te42- chain.
    Notes: Die Titelverbindungen entstehen als schwarze Kristallnadeln aus Na2Te3 und CuCl bzw. AgNO3 in Dimethylformamid in Gegenwart von PPh4Br. Wegen der großen Zellabmessungen wurden die Kristallstrukturen mit Hilfe des Flächendetektors der Firma Stoe vermessen.(PPh4)4[Cu2Te12]: Raumgruppe P21/n, Z = 6, 51 338 gemessene Reflexe, Strukturlösung mit 14 177 unabhängigen Reflexen mit I 〉 4σ(I), R = 0,081. Gitterabmessungen bei - 50°C: a = 1 704,5; b = 1 694,5; c = 5 044 pm; β = 94,20°.(PPh4)4[Ag2Te12]: Raumgruppe P21/n, Z = 6, 80 811 gemessene Reflexe, Strukturlösung mit 16 092 unabhängigen Reflexen, mit I 〉 3σ(I), R = 0,052. Gitterabmessungen bei - 50°C: a = 1 703,8; b = 1 722,9; c = 5 123 pm; β = 94,65°.Die beiden miteinander isotypen Strukturen enthalten sechs symmetrieunabhängige PPh4+-Ionen und zwei symmetrieunabhängige Anionen [M2Te12]4-. In diesen sind die Metallatome zweier (MTe4)--Fünfringfragmente über eine Te42--Kette miteinander verknüpft.
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