No abstract

The reactions of [Pt2(p-OH)2(POPh2)2(PR3)2] with (i) HBF4 or HPF6 to give the triplatinum complexes [Pt3(p3-OH)-(p-OPPh2)3(PR3)312+ ( 2) and (ii) alcohols to give the diplatinum complexes [Pt2(p-OPPh2)2(PR3)21 (4) are described; the X-ray crystal structures of (2a) and (4a) show the OPPh2 ligand is capable of spanning Pt . distances of 2.55 to 3.71 A.

Chelate-stabilised halocarbon-platinum(ii) complexes of the general type cis-and trans-[MePt(q2-Ph2PY)(ql-Ph2PY)][BF4] where Y = CH2CH2CI, o-C6H4CI or O-CH2C6H4X, X = CI, Br or I, are reported and the relative trans-influence of the halocarbon donors is discussed; the X-ray crystal structures of [MePt(q2-Ph2PCH2CH2CI)(ql-Ph2PCH2CH2CI)l[BF41 and }{~l-Ph2P(o-CsH4CI)}][BF4] have been determined.

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