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A series of tetranuclear Mo(W)-Ag mixed-metal clusters have been synthesized by makinguse of the solid state reactions of[NH_4]_2[MYS_3](M=Mo,W;Y=O,S),AgX(X=Cl,Br,I)and(n-Bu)_4NX’(X’=Cl,Br),two of which[(n-Bu)_4N]_3[MoOS_3Ag_3Br_4](1)and[(n-Bu)_4N]_3[WS_4Ag_3Cl_4](2)have been structurally characterized by X-ray analysis.The crystal data:1,cubic,P 3m,a=12.093(4) ,Z=1,R=0.076;2,cubic,P 3m,a=12.059(2) ,Z=1,R=0.075.The clusteranion core[Ag_3MS_3X’]of the two compounds can be viewed as a cube in which the four metal atomsand the four non-metal atoms are statistically distributed,respectively.Substitution reaction withPPh_3 ligand is also discussed for this type of tetranuclear clusters.
A series of tetranuclear Mo (W) -Ag mixed-metal clusters have been synthesized by makinguse of the solid state reactions of [NH_4] _2 [MYS_3] (M = Mo, W; Y = O, S) (N-Bu) _4NX ’(X’ = Cl, Br), two of which [(n- Bu) _4N] _3 [MoOS_3Ag_3Br_4] (1) and [(n-Bu) _4N] 3, a = 12.093 (4), Z = 1, R = 0.076; 2, cubic, P 3m, a = 12.059 (2), Z = 1, R = 0.075. The two compounds can be viewed as a cube in which the four metal atoms and the four non-metal atoms are statistically distributed, respectively. Substitution reaction with PPh_3 ligand is also discussed for this type of tetranuclear clusters.