MX2L2 (M = Pd, Pt; L = di(1-naphthyl)methylarsine = Nap2AsMe and X = Cl, Br, I), M2Cl2(m-Cl)2L2, PdCl(S2CNEt2)L, Pd2Cl2(m-OAc)2L2 and MCl2(PR3)L (PR3 = PEt3, PPr3, PBu3, PMePh2) were prepd. These complexes were characterized by elemental analyses, IR, Raman, NMR (1H, 13C, 31P) and UV-visible spectroscopy. The stereochem. of the complexes was deduced from the spectroscopic data. The crystal structures of trans-PdCl2(PEt3)(Nap2AsMe) and of Pd(S2CNEt2)2, a follow-up product, were detd. The UV-visible spectra of MX2L2 complexes show a red shift on going from X = Cl to X = I. PdX2L2 and PtX2L2 are strongly luminescent in fluid soln. and in the solid at ambient temp. on SciFinder(R)
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