mu-Oxido-bis[chlorido(4,4 '-di-tert-butyl-2,2 '-bipyridine-kappa N-2,N ')dioxidomolybdenum(VI)] 0.2-hydrate


The title hydrate, [Mo2Cl2O5(C18H24N2)(2)]center dot 0.2H(2)O, has been isolated as the oxidation product of [Mo(eta(3)-C3H5)Cl-(CO)(2)(di-t-Bu-bipy)] (where di-t-Bu-bipy is 4,4'-di-tert-butyl-2,2'-bipyridine). A mu-oxide ligand bridges two similar MoCl(di-t-Bu-bipy)O-2 units, having the terminal oxide ligands mutually cis, and the chloride and mu-oxide trans to each other. In the binuclear complex, the coordination geometries of the metal atoms can be described as highly distorted octahedra. Individual complexes co-crystallize with a partially occupied water molecule of crystallization (occupancy factor = 0.20; H atoms not located), with the crystal packing being mediated by the need to effectively fill the available space. A number of weak C-H center dot center dot center dot O and C-H center dot center dot center dot Cl interactions are present.



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Gomes, AC; Fernandes, JA; Gamelas, CA; Goncalves, IS; Paz, FAA

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We are grateful to the Fundacao para a Ciencia e a Tecnologia (FCT/FEDER and POCI, Portugal) for their general financial support to CICECO, and for the post-doctoral research grant No. SFRH/BPD/63736/2009 (to JAF). Thanks are also due to the FCT for specific funding toward the purchase of the single-crystal diffractometer.

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