title: Unprecedented [V2O]6+ core of a centrosymmetric thiosemicarbazonato dimer: spontaneous deoxygenation of oxovanadium(IV).
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.
authors.affiliation: Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman. musa@squ.edu.om
authors.forename: Musa S
authors.initials: MS
authors.lastname: Shongwe
authors.forename: Huda N R
authors.initials: HN
authors.lastname: Al-Kharousi
authors.forename: Harry
authors.initials: H
authors.lastname: Adams
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Morris
authors.forename: Eckhard
authors.initials: E
authors.lastname: Bill
mesh_terms: D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013696:Temperature; D013882:Thiosemicarbazones / Q000737:chemistry*; D014638:Vanadates / Q000737:chemistry*; D014639:Vanadium / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D013882:Thiosemicarbazones; D014639:Vanadium; C075743:oxovanadium IV; D014638:Vanadates; D010100:Oxygen