The synthesis of the coordination polymer {trans-(Ph3P)2pt[(η2-C≡=CPh)CuX]2}n (3a, X=Cl; 3b, X=Br) and it's reaction towards bipy and [AgNO3] is described.: The solid-state structures of A and trans(Ph3P)2Pt[(η2-C≡CPh)CuNO3]2 are reported as well

The title complex {trans-(Ph3P)(2)Pt[(eta(2)-Cequivalent toCPh)CuX](2)}(n) (3a, X=Cl; 3b, X=Br) can be prepared by treatment of trans-(Ph3P)2Pt(C=-CPh)2 (1) with two equivalents of [CuX] (2a, X = Cl; 2b, X = Br) in quantitative yield. The reaction chemistry of 3b towards organic chelating molecules is reported. Treatment of 3b with, for example, 2,2'-bipy (4) produces the chelated copper(l) species [(bipy)CuBr](2) (6) along with 1. However, if 3b is reacted with the silver(I) salt [AgNO3] (5a) then trimetallic trans-(Ph3P)(2)Pt [(eta(2)-Cequivalent toCPh)CuNO3](2) (7) is formed in which each phenylethynyl ligand is eta(2)-coordinated to a copper(I) nitrate unit. This complex is also obtained, when 1 is reacted with two equivalents of [Cu(Nequivalent toCMe)(4)]NO3 (5b). The solid-state structures of 3b and 7 are reported. Polymeric 3b crystallises in the triclinic space group P (1) over bar with cell parameters a = 11.5958(3) Angstrom, b = 13.3491(3) Angstrom, c = 15.4875(4) Angstrom, alpha = 81.755(1)degrees, beta = 87.324(1)degrees, gamma = 85.472(1)degrees, V = 2363-66(10) Angstrom(3), Z = 2 and rho = 1.818 g mol(-1). Complex 7: monoclinic space group P2(1)/n with a = 9.8971 (1), b = 14.2324(3), c = 16.6957(2) Angstrom, beta = 105.478(1)degrees, V = 2266.46(6) Angstrom(3), Z = 2 and rho = 1.719 g mol(-1). In 3b a linear polymeric structure is adopted. 3 contains two crystallographic independent trans-Pt(Cequivalent toCPh)(2) units which are linked by 4-membered Cu-2(mu-Br)(2) cycles at which the respective PhCequivalent toC units are eta(2)-coordinated to the copper(I) ions. In 7 each of the two PhCequivalent toC entities is pi-bound to a mononuclear CuNO3 moiety of which the NO3 ligand is chelate-bound to copper(I). (C) 2004 Published by Elsevier B.V.