Journal of Organometallic Chemistry p. 73 - 80 (1997)
Update date:2022-08-05
Topics:
Narayan, Sanjay
Jain, Vimal K.
Butcher
Cyclometallated palladium(II) dithiolate complexes of the type [Pd(E∩C)(S∩S)] (where E∩CH N,N′-dimethylbenzylamine, azobenzene, 4-MeOC6H4CH=NC6H4Me-4, 2-phenylpyridine or tris-o-tolylphosphine; S∩S = S2CNEt2 or S2P(OR)2, R = Et, Prn, Pri, Bun or Bus) have been synthesized by the reaction of [Pd(E∩C)(μ-X)]2 (X = Cl, OAc) with sodium or ammonium salts of dithio acids. These complexes were characterized by elemental analysis, IR, NMR (1H and 31P) and mass spectral data. Treatment of [Pd(N∩ C){S2P(OPrn)2}] [N∩C = NC5H4-C6H4 or N(Ph)=NC6H4] with anhydrous HCl in diethyl ether afforded [Pd(E∩C)(μ-Cl)]2 and the free dithio acid. When reaction was carried out with triphenylphosphine, a dynamic equilibrium was established between [Pd(N∩ C){S2P(OPrn)2}] and [Pd(PPh3)(η1-C-N){S2P(OPrn)2}]. The crystal structure of [Pd{N(Me)2CH2C6H4}{S2P(OPrn)2}] (3) has been determined by X-ray diffraction. The compound exhibits distorted square-planar geometry around palladium atom.
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