Studies on solid state reactions of coordination compounds

A series of tetranuclear Mo（W）-Ag mixed-metal clusters have been synthesized by makinguse of the solid state reactions of[NH][MYS]（M=Mo,W;Y=O,S）,AgX（X=Cl,Br,I）and（n-Bu）NX’（X’=Cl,Br）,two of which[（n-Bu）N][MoOSAgBr]（1）and[（n-Bu）N][WSAgCl]（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[AgMSX’]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 withPPhligand is also discussed for this type of tetranuclear clusters.