Low-valent vanadium catecholate clusters
作者： Emma Scales , Lorenzo Sorace , Andrea Dei , Andrea Caneschi , Christopher A. Muryn
DOI: 10.1039/C0SC00142B
关键词: Medicinal chemistry 、 Solvothermal reaction 、 Chemistry 、 Stereochemistry 、 Atmospheric oxygen 、 Vanadium 、 Redox
摘要: A simple synthetic route to low-valent vanadium catecholate clusters, via solvothermal reaction of [V(acac)3] with catechols in alcohols, is presented. The syntheses and X-ray structures [VIII6O(dbcat)4(OMe)8(MeOH)2] (1; which has the Lindqvist structure), [VIII6O2(dbcat)2(dbsq)2(acac)2(PhCO2)4(EtO)2] (2; could alternatively be formulated as [VIII4VIV2O2(dbcat)4(acac)2(PhCO2)4(EtO)2]) [VIV2(dbcat)4(EtOH)2] (3) are reported (dbcat2− = 3,5-tBu2-catecholate; dbsq− 3,5-tBu2-semiquinone). primary products reactions 1 3 atmospheric oxygen, [V6O3(“dbcat”)4(OMe)8] (4) [V2O2(“dbcat”)4] (5), also reported—the assignments redox states for these four-electron oxidised species more ambiguous.
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