1 SMO Dioxosulfidomolybdenum(VI) ion 1.000 2 MOS Dioxothiomolybdenum(VI) ion 1.000 3 CUM Cu(I)-S-mo(VI)(=O)oh cluster 0.800 4 CUN Cu(I)-S-mo(IV)(=O)oh cluster 0.800 5 2MO Molybdenum (IV)oxide 0.750 6 EFK Oxidanyl(oxidanylidene)molybdenum 0.750 7 MOW Oxo(sulfanyl)molybdenum(IV) ion 0.750