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1992 (1)
1Author    Joseph Grobe, Anita Krummen, Bernt Krebs, Mechtild LägeRequires cookie*
 Title    Alternativ-Liganden XXVIII [1]  
 Abstract    Neue Komplexe M (CO)4L mit Dipodliganden des Typs R2M (O C H 2PM e2)*(CH2CH2PM e2)2_x (M = Cr, M o, W; M = Si, Ge; R = M e, Ph; x = 0 -2) Alternative Ligands XXVIII [1] Novel Complexes M (CO)4L with Dipod Ligands of the Type R2M '(O C H 2PM e2)v(C H 2C H 2PM e2)2_x (M = Cr, Mo, W; M' = Si, Ge; R -Me, Ph; jc = 0 -2) The coordinating properties o f dipod ligands o f the type R2M (O C H 2PM e2)T (CH 2CH 2PM e2)2_r (R = Me, Ph; M' = Si, Ge; x = 0 -2) have been investigated by the preparation o f the novel rä-M (C O)4L complexes (M = Cr, M o, W). They are obtained under mild conditions in cyclo­ hexane or «-hexane solution by the reaction o f the norbornadiene precursors M (CO)4N B D with the corresponding ligands. In case o f the Ge containing ligands the dilution principle was used to improve the yields o f the mononuclear derivatives. The rate o f the N B D replacement is mainly determined by the central atom M (M o > W > Cr) and only little by R, M' or x . The new com pounds have been characterized by analytical (C, H) and spectroscopic investigations ('H, 3IP N M R , IR, MS). The ligand properties are discussed on the basis o f spectroscopic data (in particular coordination effects) and the molecular structure o f the complexes Cr(CO)4[Ph2Si(OCH 2PM e2)2] (12) and M o(CO)4[Me2G e(C H 2C H 2PM e2)2] (28) obtained by X-ray diffraction studies. 
  Reference    Z. Naturforsch. 47b, 310 (1992); eingegangen am 5. August 1991 
  Published    1992 
  Keywords    D ipod Phosphane Ligands, 'H N M R Spectra, 31P N M R Spectra, X -R ay 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0310.pdf 
 Identifier    ZNB-1992-47b-0310 
 Volume    47