Synthesis and structure of {Mo_3S_7S_2P(OC_2H_5)_2_3}{Mo_3S_4S_2P(OC_2H_5)_2_4(SCN)} and interaction between their cluster units

摘要

The synthesis method and crystal structure of a novel Mo 3 cluster compound are reported. The results of structural analysis and the quantum calculation for the entire cluster molecule reveal that though two Mo 3 cluster units, which belong to two different kinds of structural type respectively, show an apparent ionic characteristic, the interaction between them via the bridging S atoms is still quite certain. The relationship between cluster electron counting and stability of the Mo 3 clusters are also primarily discussed.