Abstract
The reaction of 1,2,5,6-tetrathiacyclooctane with Ru3(CO)12 in methylene chloride solvent at 40°C has yielded two new isomericbis-thane-1,2-dithiolate triruthenium carbonyl cluster complexes:anti-Ru3(CO)7(μ-SCH2CH2S)2, 1 andsyn-Ru3(CO)7(μ-SCH2CH2S)2,2, and the previously reported diruthenium compound, Ru2(CO)6(μ-SCH2CH2S).3 in 24 %, 5 %, and 26 % yields, respectively. Compounds1 and2 were characterized by a single crystal X-ray diflraction analyses. Both compounds consist of a open triangular triruthenium clusters with seven terminal carbonyl ligands and a bridging ethanedithiolate ligand across each of the metal metal bonds in the complex. When heated to 60° C, compound1 was trans[formed into a mixture of2 and3. Crystallographic data for1: Ru3S4O7C11H8, space group, P21/a,a= ll.830(2)A,b= 10.576(1)A,c= 16.012(1)A,β= 100.53(2)°,Z=4, 1808 reflections,R= 0.029. For2: Ru3 S4O7C11H8, space group P1,a= 9.945(l)A,b= 11.323(1)A.c= 9,788(1)A,a= 108.73(1)°,β= 104,67(1)°,y= 103.59(2)°,Z = 2, 2046 rellections.R = 0.021.
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