双核化合物PdW(μ-Ph_2Ppy)_2(μ-CO)(CO)_2Cl_2·0.7CH_2Cl_2的合成和晶体结构

Studies on Synthesis and Crystal Structure of Binuclear Complexes PdW(μ-Ph_2Ppy)_2(μ-CO)(CO)_2Cl_2 · 0. 7CH_2Cl_2

合成了新型具有Pd—W键的双核化合物PdW(μ-Ph_2Ppy)_2(μ-CO)(CO)_2Cl_2·0.7CH_2Cl_2(Ph_2Ppy为2-二苯基膦基吡啶)。首次测定了具有Pd—W键化合物的晶体及分子结构,该晶体空间群为P2_1/C,晶胞参数:a=14.616(3),b=15.289(1),c=17.676(1),β=97.29(1)°和Z=4。最终R值为0.081。 钯原子为d^9五配位构型,钨原子为d^5七配位构型,两者形式氧化数均为+1。Pd—W键距为2。819(5)。该分子为手性分子,属C_1点群。

0CF.((, A new complex containing Pd-W bond, PdW(μ-Ph2Ppy)2(μ-CO)(CO)2Cl2 has been prepared and its crystal and molecular structure determined by X-ray diffraction. The molecule crystallized in the monoclinic space group P21/c with a=14. 616(3) A , b=15. 289(1) A , c=17. 676 (1) A, β=97. 29(1)° and Z=4. the final R=0. 081. The palladium atom is d9 five-coordinated and the tungsten atom is d5 seven-coordinated. Both metal atoms possess the formal oxidation state +1. The molecule is chiral and belongs to the C1 point group.