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1991 (1)
1Author    Z. NaturforschRequires cookie*
 Title    Oxidative Addition von Tetramethyldiphosphan und -arsan an C p '-S iM e2-Cp'-überbrückte Molybdän-und Wolframcarbonyl-Komplexe*  
 Abstract    O xidative A d d itio n o f T etram ethyldiphosphane and -arsane to Binuclear C p '-S iM e 2 -C p '-B rid g e d M olybdenum and T ungsten C arbonyl Com plexes** W alter A b riel+,a, G e rh a rd B aum +b, H eike B urdorf*5 und Jürgen Heck*-C a AW H chem consult, Thermal reaction o f M e2Si[Cp'M(CO)3]2 (M = M o, W; Cp' = C5H 4) with tetramethyldi­ phosphane and -diarsane gives oxidative coupling products with bridging EM e2-groups (E = P, As). With E = P discrete binuclear com pounds are obtained, which on further thermolysis afford new species o f the general formula {M e2Si(Cp'M)2(CO)3(J w-PMe2)2} (5). X -R ay struc­ ture determ ination o f 5a (M = M o) and N M R data show a PM P-heteroallylic system which is bound to the second metal. In the case o f M = W a second com pound with a mixed hydrido and dim ethylphosphido bridge can be isolated, which shows fluxionality in solution. However, the oxidative additions with tetramethyldiarsane lead to insoluble products which are assumed to be polymeric with C p '-S iM e2-C p ' as well as A sM e2 bridges linking the metal centers. 
  Reference    Z. Naturforsch. 46b, 841—8 (1991); eingegangen am 28. N ovem ber 1990 
  Published    1991 
  Keywords    Oxidative A ddition, Tetramethyldiphosphane, Tetramethyldiarsane, Crystal Structure, Fluxional Behaviour 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0841.pdf 
 Identifier    ZNB-1991-46b-0841 
 Volume    46