【摘要】 (NH₄)₂WS₄,CuCl 和 NH₂OH·HCl 在吡啶溶液中反应可得到红色晶体 WCu₄S₄Cl₂（NC₅H₅）₆.晶体属于单斜晶系,空间群为为 C_2h⁶-C2/c.晶胞参数为:a=14.883（9）,b=12.580（6）,c=20.318（9）（?）;β=100.50（4）°;Z=4.结构用重原子法解出,经最小二乘法修正,偏离因子R=0.069.分子具有 C₂点群对称性,中心 W 原子以平面四方形形式和四个 Cu 原子结合.W—Cu间平均距离为2.673（?）.该化合物为钨铜的混合金属原子簇化合物.更多还原

【Abstract】 Reaction of（NH₄）₂WS₄ with CuCl in pyridine in the presence of NH₂OH·HCland PPh₃ leads to the formation of a red crystal WCu₄S₄Cl₂（NC₅H₅）₆.Its density is 1.974g/cm³.The crystal belongs to the monoclinic system,space group C⁶_2h,-C2/c,with a=14.883（9）（?）,b=12.580（6）（?）,c=20.318（9）（?）;β=100.50（4）°;V=3740（3）（?）³ and Z=4.The intensity data were collected by SYNTEX-R3 four-circle diffractometer.Thestructure was solved by Patterson method and Fourier method and refined by least-squares with anisotropic thermal parameters.The value of R is 0.069.The molecule hasC₂ point group symmetry,with the following average principle dimensions:W—Cu=2.673（?）,W—S=2.225（?）,∠Cu—W—Cu=90.0°.In the molecule,the central W atom waslinked with four Cu atoms and four S atoms in the form of square and tetrahedronrespectively.Each Cu atom was linked to the central W atom by double sulfurbridge and each Cu atom linked with another Cu atom by single sulfur bridge.Themolecule contains a pyridine which locates disorderly.The compound belongs totungsten-copper mixed metal cluster compound.更多还原