摘要:
Complexes CiS-Q[Pt(kappa(2)-Ar)(kappa(1)-Ar)Cl] [Q = Ph3PCH2Ph (1), Me4N (2); kappa(2)-Ar = C-6(NO2)(2)-2,6-(OMe)(3)-3,4,5-kappa(2)-C,O; kappa(1)-Ar = C-6(NO2)(2)-2,6-(OMe)(3)-3,4,5- kappa(1)-C] have been prepared by reacting [HgAr2] [Ar = C-6(NO2)(2)-2,6-(OMe)(3)-3,4,5] and Q(2)[Pt2Cl6] (4:1) in acetone at 100 degreesC. Complex 2 could be prepared by reacting [HgAr2] (i) with [Me4N](2)[Pt2Cl6] (2:1) in the presence of an excess of [Me4N]Cl or (ii) with [Me4N](2)[PtCl4] (1:1). The reaction of equimolecular amounts of 2 and Tl(acac) or AgClO4 gave, respectively, cis-Me4N[Pt(kappa(1)-Ar)(2)(acaC-kappa(2_)O,O)] (3) or cis-[Pt(kappa(2)-Ar)(kappa(1)-Ar)(OH2)] (4), which in turn reacts with neutral ligands to give cis-[Pt(kappa(2)-Ar)- (kappa(1)-Ar)L] [L = PhCN (5), tetrahydrothiophene (6)]. Hg(O2CCF3)(2) reacts with an equimolar amount of 2 to give cis-Me4N[Pt(kappa(2)-Ar)(kappa(1)-Ar){OC(O)CF3}] (7). The structures of complexes 1, 4.Et2O, 4.CH2Cl2, and 7 have been solved by X-ray diffraction studies.