Reaction of [Mo3S4(H2O)9]4+ with Cobalt and Mercury. Syntheses and X-Ray Structures of Double Cubane-Type Cluster, [(H2O)9Mo3S4CoCoS4Mo3(H2O)9](CH3·C6H4·SO3)8·18H2O and Sandwich Cubane-Type Cluster, [(H2O)9Mo3S4HgS4Mo3(H2O)9](CH3·C6H4·SO3)8·2OH2O

Two new clusters, [(H2O)9Mo3S4CoCoS4Mo3(H2O)9](CH3·C6H4·SO3)8·18H2O (1) and [(H2O)9Mo3S4HgS4Mo3(H2O)9](CH3·C6H4·SO3)8·20H2O (2), have been synthesized by the reaction of [Mo3S4(H2O)9]4+ (3′) with metallic cobalt and mercury, respectively. The X-ray structure analyses revealed that in 1 two Mo3S4Co(H2O)9 moieties are joined through two cobalt-sulfur bonds, and in 2 a mercury atom was sandwiched by two 3′ s.