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  • 1
    Electronic Resource
    Electronic Resource
    Further Evidence for Attractive Interactions between Gold(I) Centers in Binuclear Complexes (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 893-895 
    Details
    ISSN: 0009-2940
    Keywords: Attractive interactions ; Gold complexes ; Phosphane derivatives ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Another example of the conformation-determining attractive interaction between gold(I) centers is presented, based on changes in the conformation of the butadiene skelton. The s-trans ground state geometry of 2,3-bis(diphenylphosphino)-1,3-butadiene (2) is abandoned in the gold complex 3, and the two gold atoms are brought into contact at a distance of 3.023(1) Å. The conformational change of the Ligand also occurrs at a single metal atom, where the bisphosphine acts as a difunctional chelating ligand, as demonstrated in the rhodium complex 4.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220517
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of tetrakis[(tri-tert-butylphosphane)gold(I)]phosphonium salts and crystal structure of the tetraphenylboroxinate salt {[(tBu)3PAu]4P}+ [O(PhBO)2BPh2] -  (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 2033-2036 
    Details
    ISSN: 0009-2940
    Keywords: Gold complexes ; Phosphonium, tetrakis[(tri-tert-butylphosphane)gold(I)] ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of (Me2Si)3P with {[(tBu)3PAu]3O}+ BF4- in tetrahydrofuran at  - 78C affords the compound {[(tBu)3-PAu]4P}+ BF4 -  (1a) in high yield. This product is converted into the tetraphenylborate salt (1b) by treatment with Na[BPh4]. The two compounds have been identified on the basis of their analytical and spectroscopic data, but could not be crystallized. In attempts to prepare single crystals of 1b, a crystalline salt {[(tBu)3PAu]4P}+ [O(PhBO)2BPh2] -  (1c) has been obtained in very small quantities, probably by partial anion hydrolysis. A single crystal X-ray diffraction study of 1c CH2Cl2 shows the compound to be built up of cations with a strongly distorted tetrahedral (PAu)4P skeleton and anions with a planar six-membered boroxine ring. Two of the phenyl groups are attached to two trigonal-planar boron atoms and the other two phenyl groups to the third (tetrahedral) boron atom of the heterocycle. The origin of the peculiar cation structure is discussed in the light of findings with related ammonium- and arsonium-centered gold clusters.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260911
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and Structure of Binuclear Single-Bridged Bis[(phosphane)gold(I)]halogenonium Complexes (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 115-118 
    Details
    ISSN: 0009-2940
    Keywords: Gold complexes ; Bromonium complex ; Halogenonium complex ; Halogen, two-coordinate ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of (R3P)AuX (X = Cl, Br, I) with [(R3P)Au]+ BF-4 obtained from (R3P)AuCl and AgBF4 in tetrahydrofuran, lead to cationic binuclear gold(I) complexes of the general formula ([(R3P)Au]2X}+ BF-4. A number of chloro- (R = Ph, o-Tol, Mes, Bzl, Et), bromo- (R = Ph, o-Tol, Mes) and iodo-bridged (R = Ph, Mes) complexes of this type have been isolated and identified on the basis of their analytical and spectroscopic data. The crystal structure of bis[(triphenylphosphane)gold(I)]bromonium tetrafluoroborate was determined by single-crystal X-ray diffraction. The cations contain two-coordinate bromine atoms with an Au-Br-Au angle of 96.83(3)°.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300119
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    Paper (German National Licenses)
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