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Analogs of bridging-oxo complexes of dimolybdenum(V) where sulfide replaces one or both bridges are known. After reduction of [(MoO3)2(μ-edta)]4− (edta is ethylenediaminetetraacetate) with dithionite at pH 6 in the absence of dioxygen, slow replacement of bridging oxide with sulfide produced in situ produces the title compound, disodium μ-(ethylenediaminetetraacetato)-μ-oxo-μ-sulfido-bis[oxomolybdenum(V)] dihydrate, Na2[Mo2O3S(C10H12N2O8)].2H2O]. IR and NMR spectroscopic analyses are consistent with an unsymmetrical complex. In the molecular structure, the Mo centers have distorted octahedral coordination, with an average Mo—S distance of 2.320 (1) Å and an average bridging Mo—O distance of 1.938 (3) Å. The Mo...Mo contact distance [2.666 (1) Å] is intermediate between those in comparable di-μ-oxo and di-μ-sulfido complexes. Na+ ions have five and six nearest O atoms, respectively, in their coordination spheres, which each include one disordered water oxygen.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, fr1115

fcf

Structure factor file (CIF format)
Contains datablock fr1115

CCDC reference: 130398

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