83384-74-1Relevant academic research and scientific papers
Studies on the Reactivity of Metal ?-Complexes, XXXVI. Dinuclear Sandwich Complexes Containing a Metal-Metal Bond: Synthesis and Structure of (μ-C5H5)2Pd2(PR3)2
Werner, Helmut,Kraus, Hans-Juergen,Schubert, Ulrich,Ackermann, Klaus
, p. 2905 - 2913 (2007/10/02)
The complexes (C5H5)2Pd2(PR3)2 (1 - 6) are prepared by reduction of C5H5Pd(PR3)OCOCH3 with NaK2.8 or in a one-pot synthesis by reaction of 2(μ-OCOCH3) with 4 equivalents TlC5H5.The triphenyl phosphite complex (C5H5)2Pd22 (7) is obtained from 2 and TlC5H5.The X-ray structure analysis of (C5H5)2Pd2(PEt3)2 (5) shows that the two planar cyclopentadienyl ligands are coordinated sandwich-like to the Pd2(PR3)2 unit; according to the bond angle P-Pd-Pd = 175.45 degree the P-Pd-Pd-P arrangement is nearly linear.The different C-C distancesin the five-membered rings point to the presence of an allylene system and thus to a trihapto- (h3) coordination of the C5H5 ligands.
