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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: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Topics in catalysis 5 (1998), S. 3-23 
    ISSN: 1572-9028
    Keywords: asymmetric hydrogenation ; amino acid precursors ; transition metal complexes ; homogeneous catalysis ; heterogeneous catalysis ; water soluble complexes ; mechanism ; catalytic cycles ; origin of enantioselection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The historical development of asymmetric hydrogenation of N-acyl dehydroamino acids and their derivatives is reported. Both homogeneous and heterogeneous catalysis are illustrated by selected examples. Catalysis by water soluble complexes and transfer hydrogenation are also treated in this review. The mechanism of catalytic hydrogenation, its elementary steps and the origin of enantioselection are discussed.
    Type of Medium: Electronic Resource
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  • 4
    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.
    Type of Medium: Electronic Resource
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  • 5
    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.
    Type of Medium: Electronic Resource
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  • 6
    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.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 444-449 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Palladium and Platinum(II) Complexes with the Anions of 6-Methyl-1,2,3-oxathiazin-4(3H)-one 2,2-Dioxide and N-2-PyrimidinylsulfanilamideWith the title ligand L = 3 the complexes K2[trans-PtCl2L2] (1) and K2[ML4] (M = Pt,Pd) (2, 4) have been obtained. The anion 5 of sulfadiazine and (nBu3P)(CI)PdCl2Pd(Cl)(PnBu3) give a dinuclear ligand bridged complex 6. The compounds are characterized by their IR and 1H NMR spectra. The structure of 1 was determined by X-ray structure analysis.
    Notes: Mit dem Titelliganden L = 3 werden die Komplexe K2[trans-PtCl2L2] (1) und K2[ML4] (M = Pt, Pd) (2, 4) erhalten. Das Sulfadiazin-Anion (5) bildet mit (nBu3P)(Cl)PdCl2Pd(Cl)(PnBu3) einen zweikernigen ligandverbrückten Komplex 6. Die Verbindungen werden spektroskopisch (IR, 1H-NMR) charakterisiert; die Struktur von 1 wird durch eine Röntgenstrukturanalyse bestimmt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 8
    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.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    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.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 1998-1999 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Simple Synthesis of (η2-Ethene)bis(triphenylphosphane)platinum(0)The title compound 2 is easily accessible through reduction of dichlorobis(triphenylphosphane)-platinum(II) (1) with sodium tetrahydridoborate in ethanol under ethene pressure or without pressure in methylene chloride/ethanol. No nitrogen atmosphere or purified solvents are necessary.
    Type of Medium: Electronic Resource
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