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  • Inorganic Chemistry  (24)
  • 1980-1984  (24)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 659-668 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Glycinato Compounds of Platinum(II), Palladium(II), and Copper(II) with Amide Acetals: Schiff Base ComplexesA series of Schiff base complexes of platinum(II), palladium(II), and copper(II) 1-4 has been obtained from glycinato chelate compounds and amide acetals. The structure of the complexes has been determined by their IR and NMR spectra, that of 3a by an X ray structure analysis. With trans-bis(glycinato)platinum(II) also reaction with DMF at the α-methylene group of a glycinate ligand has been observed to give a serine derivative as ligand (5), the Schiff base complex 2a being isolated as intermediate. The first step of these reactions always is an attack of the amide acetal at the amino group; the coordinated and activated Schiff base ligands may also react at the α-methylene group.
    Notes: Eine Reihe von Schiffbase-Komplexen von Platin(II), Palladium(II) und Kupfer(II) 1-4 wird aus Glycinato-Chelatkomplexen und Amidacetalen erhalten. Die Struktur der Verbindungen wird spektroskopisch, die von (3a) durch Röntgenstrukturanalyse bestimmt. Bei trans-Bis(glycinato)platin(II) wird mit DMF auch Reaktion an der α-Methylengruppe eines Glycinat-Linganden unter Bildung eines Serinderivats als Liganden (5) beobachtet, wobei der Bis(Schiffbase)-Komplex 2a als Zwischenprodukt isoliert werden kann. Amidacetale greifen (Glycinato)platin(II)-Komplexe primär stets an der Aminogruppe an, erst im zweiten Schritt kann die Reaktion an der α-Methylengruppe des koordinierten Schiffbase-Liganden erfolgen.
    Additional Material: 5 Tab.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 911-916 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure of a (2-Tetrazene-1,4-diyl)platinum(IV) Complex: (PhC ≡C)2(Et3P)2Pt[l,4-(4-NO2C6H4)2N4I]The reaction of trans-(PhC ≡ C)2Pt(PEt3)2 with 4-nitrophenyl azide gives the octahedral complex (PhC ≡ C)2(Et3)2Pt[1,4-(4-NO2C6H4)2N4] (2). On the basis of the bond lengths 2 can be formulated as platinum(IV) complex with a dianionic 2-tetrazene-1,4-diyl ligand.
    Notes: Bei der Umsetzung von trans-(PhC ≡ C)2Pt(PEt3)2 mit 4-Nitrophenylazid entsteht der oktaedrische Komplex (PhC ≡ C)2(Et3)2Pt[1,4-(4-NO2C6H4)2N4] (2). Nach den durch Röntgenstrukturanalyse ermittelten Bindungslängen läßt sich 2 als Platin(IV)-Komplex mit einem 2-Tetrazen-1,4-diyl-Dianion als Liganden formulieren.
    Additional Material: 1 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 1370-1376 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidative Addition of 4-Isonitroso-3-R-isoxazol-5(4H)-ones and Isoxazolones to Ethylenebis-(triphenylphosphane)platinum(O)4-Isonitroso-3-R-isoxazol-5(4H)-ones (1) and isoxazolones 4 are oxidatively added to Pt-(PPh3)2(C2H4) to give trans-hydridobis(triphenylphosphane)platinum(II) complexes (2, 5) with the corresponding anions of 1 and 4, respectively, as ligands. The single crystal X-ray structure shows that the anion of 4-isonitroso-3-R-isoxazol-5(4H)-one is coordinated via the nitrogen atom of the oximate group to the platinum.
    Notes: 4-Isonitroso-3-R-isoxazol-5(4H)-one (1) und Isoxazolone 4 werden an Pt(PPh3)2(C2H4) oxidativ unter Bildung von trans-Hydridobis(triphenylphosphan)platin(II)-Komplexen (2, 5) mit den jeweiligen Anionen von 1 bzw. 4 als Liganden addiert. Die Röntgenstrukturanalyse zeigt, daß das 4-Isonitroso-3-R-isoxazol-5(4H)-on-Anion über das Stickstoffatom der Oximat-Gruppe an das Platin gebunden ist.
    Additional Material: 1 Ill.
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  • 4
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Attempts to Stabilize Nitrile Sulfides at the Metal. Reactions of 5-R-1,3,4-Oxathiazol-2-ones with (Triphenylphosphane)palladium(0) and -platinum(0) Compounds: N-Thiohydroximato ComplexesOxathiazolones (1) are added oxidatively to (triphenylphosphane)platinum(0) and -palladium(0) compounds to give carbon monoxide and the complexes 2 and 3 with the dianion of N-thiohydroximic acid and its derivatives as chelating ligands. The structure of 2g was determined by x-ray analysis.
    Notes: Oxathiazolone (1) addieren sich oxidativ an (Triphenylphosphan)platin(0)- und -palladium(0)-Verbindungen unter Abspaltung von Kohlenmonoxid und Bildung der Komplexe 2 und 3 mit dem negativ zweiwertigen Anion von N-Thiohydroximsäure bzw. deren Derivate als Chelatliganden. Die Struktur von 2g wurde röntgenographisch bestimmt.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 3775-3782 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Strong Organometallic Lewis Acids, II. Reaction of (η5-C5H5)(OC)3MoBF4 with Water. Structure of a Tris(metallo)oxonium Cation {[(η5-C5H5)(OC)2Mo]3O}+The reaction of (η5-C5H5)(OC)3MoBF4 with water vapour at 20°C yields the aqua complex [(η5-C5H5)(OC)3Mo(OH2)]+BF4- (1). The aqua ligand in solid 1 forms hydrogen bridges to the BF4- anion. With an excess of water 1 gives the hydrate [(η5-C5H5)(OC)3Mo(OH2)]+BF4- · n H2O (n ≍ 3) (2). From a solution of 1 the tris(metallo)oxonium salt {[(η5-C5H5)(OC)2Mo]3O}+BF4- (3) has been isolated. The X-ray structure of 3 was determined.
    Notes: (η5-C5H5)(OC)3MoBF4 setzt sich mit Wasserdampf bei 20°C zum Aquakomplex [(η5-C5H5)(OC)3-Mo(OH2)]+BF4- (1) um. Der Aqualigand in 1 bildet in festem Zustand Wasserstoffbrücken zum BF4--Anion aus. Mit überschüssigem Wasser entsteht aus 1 ein Hydrat [(η5-C5H5)(OC)3Mo-(OH2)]+ BF4-·n H2O (n ≍ 3) (2). Aus einer Lösung von 1 entsteht das Tris(metallo)oxonium-Salz {[(η5-C5H5)(OC)2Mo]3O}+BF4- (3), dessen Struktur röntgenographisch bestimmt wurde.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 2360-2364 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydridoiridium(III) Complexes with Terminal and Bridging Thio- and Selenocyanate1)The thio- and selenocyanato complexes (Ph3P)2(CO)(Cl)(H)IrX 1 (X = SCN) and 2 (X = SeCN) and 2 (X = SeCN) have been prepared from the corresponding tetrafluoroborato- and trifluoromethanesulfonato-compounds (X = BF4, CF3SO3). The SCN ligand in 1 is S-bonded. 2 was obtained as a mixture of linkage isomers. The reaction of 2 with the tetrafluoroborato-complex (Ph3P)2(CO)(Cl)(H)IrFBF3 gives the salt [(Ph3P)2(OC)(Cl)(H)Ir—SeCN—Ir(H)(Cl)(CO)(PPh3)2]+BF-4 which contains the selenocyanate-bridged cation as a mixture of stereoisomers.
    Additional Material: 2 Tab.
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  • 7
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chiral Dicarbonyl(η5-cyclopentadienyl) Complexes of Molybdenum and Tungsten with Anions of α-Amino AcidsA series of chiral complexes (η5-C5H5)M(CO)2(L-L′) (M = Mo, W; L-L′ = Gly-O, Sar-O, Me2Gly-O, L-Ala-O, 2-Me-L-Ala-O, L-Val-O, L-Ser-O, L-Thr-O, L-His-O, L-Phe-O, Bzl-L-Phe-O, L-Pro-O, S-Me-L-Cys-O, L-Lys-O, L-Glu-O, L-Cys-O, L-Pen-O) (1a-t, 2a, b, 3, 4) has been prepared and spectroscopically characterized. The diastereomers can be distinguished by their 1H and 13C NMR spectra. They are configurationally stable in solution. The sarcosinato complex 1b can be resolved into the diastereomeric pairs of enantiomers. In alkaline medium a rapid equilibrium of the diastereomers (1:1) is obtained due to isomerization at the coordinated N-atom. The structure of the DL-serinato complex 1i has been determined by X-ray analysis. The unit cell contains two pairs of enantiomers (RMoRC and SMoSC).
    Notes: Eine Reihe von chiralen Komplexen (η5-C5H5)M(CO)2)(L-L′) (M = Mo, W; L-L′ = Gly-O, Sar-O, Me2Gly-O, L-Ala-O, 2-Me-L-Ala-O, L-Val-O, L-Ser-O, L-Thr-O, L-His-O, L-Phe-O, Bzi-L-Phe-O, L-Pro-O, S-Me-L-Cys-O, L-Lys-O, L-Glu-O, L-Cys-O, L-Pen-O) (1a-t, 2a, b, 3, 4) wurde dargestellt und spektroskopisch charakterisiert. Die Diastereomeren lassen sich durch ihre 1H- und 13C-NMR-Spektren unterscheiden. Sie sind in Lösung konfigurationsstabil. Der Sarkosinato-Komplex 1b läßt sich in die diastereomeren Enantiomerenpaare trennen. In alkalischem Medium stellt sich infolge Isomerisierung am koordinierten N-Atom das Diastereomerengleichgewicht 1:1 ein. Die Struktur des DL-Serinato-Komplexes 1i wurde röntgenographisch bestimmt. Die Elementarzelle enthält zwei Enantiomerenpaare (RMoRC und SMoSC).
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 1665-1668 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A Simple Route to Dithiocarbimidato Platinum(II) ComplexesDithiocarbimidato complexes 3 are formed by reaction of cis-(Ph3P)2PtCl2 with primary amines in the presence of CS2. BF3 can be added to the lone pair of the N-atom in 3a. The IR and NMR data are reported.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 1682-1693 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Carbonyl Metal Hydrides with Methylthiirane and Structure of Bis[(η-cyclopentadienyl)-μ-sulfido-sulfidomolybdenum]Reaction of the carbonyl metal hydrides M(η-C5H5)(H)(CO)3 (M = Mo, W), Mn(H)(CO)5, and Fe(H2)(CO)4 with methylthiirane under mild conditions leads to insertion of sulfur into the metal hydrogen bond with formation of the hydrogen sulfido complexes M(η-C5H5)(SH)(CO)3 (M = Mo, W) (1a, b), [Mn(SH)(CO)4]2 (2), and Fe3S2(CO)9 (4), respectively. The molybdenum and tungsten compounds also form the dimeric complexes [M(η-C5H5)S2]2 (M = Mo, W) (6a, b) as well as the dithiolate bridged complex (η-C5H5)Mo[SCH(Me)CH2S]2Mo(η-C5H5) (5). The X-ray structure of anti-6a has been determined.
    Notes: Die Carbonylmetallhydride M(η-C5H5)(H)(CO)3 (M = Mo, W), Mn(H)(CO)5 und Fe(H2)(CO)4 werden mit Methylthiiran unter milden Bedingungen umgesetzt. Dabei entstehen durch Insertion des Schwefelatoms in die Metall-Wasserstoff-Bindung die Hydrogensulfido-Komplexe M(η-C5H5)(SH)(CO)3 (M = Mo, W) (1a, b), [Mn(SH)(CO)4]2 (2) bzw. Fe3S2(CO)9 (4). Die Molybdän- und Wolframverbindungen bilden spontan oder bei höherer Temperatur die zweikernigen Komplexe [M(η-C5H5)S2]2 (M = Mo, W) (6a, b) sowie den Dithiolat-verbrückten Komplex (η-C5H5)Mo[SCH(Me)CH2S]2Mo(η-C5H5) (5). Die Molekülstruktur von anti-6a wurde röntgenographisch bestimmt.
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  • 10
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrido- and Methyl-Iridium(III) Complexes with Labile Anionic Ligands; a Route to Cationic Iridium(III) ComplexesHydrido- and methyl-iridium(III) complexes (PPh3)2(CO)ClRIrX (1-4) (R = H, CH3) are formed by oxidative addition of acids HX with poorly coordinating anions X- (X- = O3SCF3-, O3SC4F9-, BF4-) and (CH3)3O+BF4-, respectively, to (PPh3)2(CO)ClIr. The excellent leaving groups X- can be substituted even by weak neutral σ- and π-donors yielding cationic iridium(III) complexes [(PPh3)2(CO)ClRIrB]+X- (5-9) (B = PPh3, CH3CN, H2O, (CH3)2CO, THF, C2H4). The structure of the key tetrafluoroborato complex (PPh3P)2(CO)Cl(H)IrFBF3 (3c) has been determined by X-ray structure analysis.
    Notes: Hydrido- und Methyl-Iridium(III)-Komplexe (PPh3)2(CO)ClRIrX (1-4) (R = H, CH3) entstehen durch oxidative Addition der Säuren HX mit schwach koordinierenden Anionen X- (X- = O3SCF3-, O3SC4F9-, BF4-) bzw. von (CH3)3O+BF4- an (PPh3)2(CO)ClIr. Die ausgezeichneten Abgangsgruppen X- lassen sich auch durch schwache neutrale σ- und π-Donoren unter Bildung der kationischen Komplexe [(PPh3)2(CO)ClRIrB]+X- (5-9) substituieren (B = PPh3, CH3CN, H2O, (CH3)2CO, THF, C2H4). Die Struktur der Schlüsselverbindung (PPh3)2(CO)Cl(H)IrFBF3 (3c) mit koordiniertem Tetrafluoroborat wurde röntgenographisch bestimmt.
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