摘要:
The reaction of [M(2)Cl(2)(mu-Cl)(2)(PR(3))(2)] with NaSeEt in 1 : 1 and 1 : 2 stoichiometry gave [M(2)Cl(2)(mu-Cl)(mu-SeEt)(PR(3))(2)] and [M(2)Cl(2)(mu-SeEt)(2)(PR(3))(2)] (M = Pd or Pt; PR(3) = PEt(3), PBu(3), PMe(2)Ph or PMePh(2)), respectively. These complexes were characterized by elemental analysis and NMR data (H-1 and P-31). The mixed chloro/ethylselenolato bridged complexes adopt a cis configuration with phosphine trans to the bridging chloride. The molecular structure of [Pt2Cl2(mu-SeEt)(2)(PEt(3))2] has been determined by single crystal X-ray diffraction. The complex has a planar four-membered ''Pt2Se2'' bridge.