摘要:
Treatment of mercury(II) chloride with dpmp (dpmp is bis(diphenylphosphinomethyl)phenylphosphine) yields a mixture of HgCl2(dpmp) and [Hg3(mu-Cl)2(mu-dpmp)2]Cl2. With mercury(II) bromide and iodide, only HgX2(dpmp) forms. [Hg3(mu-Cl2)Cl2(mu-dpmp)2]Cl(HCO3).5CHCl3 crystallizes in the monoclinic space group P2(1)/n with a = 16.424(5), b = 26.915(9), c = 19.896(5) angstrom, beta = 96.99(2)-degrees, at 130 K with Z = 4. Refinement of 434 parameters with 5277 reflections yields R = 0.080, R(w) = 0.067. The complex consists of three roughly tetrahedrally coordinated mercury ions that are connected to the two bridging phosphine ligands. Each mercury ion is coordinated to two phosphorus atoms and two chloride ligands. The Hg...Hg separations are 3.339(2) and 3.331(2) angstrom which suggest that there is little or no bonding between these d10 centers.