Shongwe MS, Al-Kharousi HNR, Adams H, Morris MJ, Bill E. Unprecedented [V2O]6+ Core of a Centrosymmetric Thiosemicarbazonato Dimer: Spontaneous Deoxygenation of Oxovanadium(IV).
Inorg Chem 2006;
45:1103-7. [PMID:
16441119 DOI:
10.1021/ic0511625]
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Abstract
The complex cation [{V(daptsc)(MeOH)}2(mu-O)]2+ [daptsc(2-) = 2,6-diacetylpyridine bis(thiosemicarbazonate)] is the first crystallographically elucidated dimer to possess a [V2O]6+ core, the [V(IV)-O-V(IV)]6+ structural unit, formed by cleavage of the multiple bond in the oxo-cation VO2+, is linear with the oxo group residing on a crystallographic center of inversion, and the temperature dependence of the magnetic data of the dimer is consistent with weak antiferromagnetic coupling of the d1-d1 centers.
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