STUDIES ON THE SOLID STATE REACTIONS OF COORDINATION COM POUNDS（ⅩⅩⅩⅩⅥ）——Solid State Synthesis and Crystal Structure of Cluster Compound{Ag3WS3Br}（PPh3）3S·H2O

The title compound {Ag3WS3Br} (PPh3)3S ·H2O was obtained by a solid state reaction of (NH4)2WS4, AgBr and Ppha under the protection of N2 atom-sphere at 95℃. The crystal data are: Mr=1520. 0, triclinic, P1, a = 12. 129(5) , b = 13.340(0), c=20.228(6)(?), *=74. 48(3), β=87. 17(8) ,γ= 63. 53(3)°, V = 2813. 98(?)3, Z = 2, Dc=1.772g/cm3, μ = 40. 67cm-1, F(000) = 1475. 79. The final R is 0.056 for 6701 refections(I≥1. 5σ(I)). The title compound is the first example of W -Ag-S cluster compound with a cubane-like structure. The average distance of W-Ag is 2. 986(?).