The d0, d1, and d2 Configurations in Known and Unknown Tetrathiometal Compounds MS4n- (M = Mo, Tc, Ru; W, Re, Os). A Quantum Chemical Study. Inorganic Chemistry, (38)26:6101--6105, 1999. [PUMA: calcn calcn;molybdenum calcn;osmium calcn;rhenium calcn;ruthenium calcn;technetium calcn;tetrathiometalate calcn;thiometalate calcn;transition calcn;tungsten electronic energetic metal metalate mol structure sulfide tetrathio]