Abstract
Three new chalcogenide vanadium complexes with a β-diketiminate ligand have been synthesized by reduction of the elemental chalcogens (S, Se, Te) with [(µ-η6:η6-toluene){V(nacnac)}2] (1) (nacnac = HC(C(Me)NC6H3- i Pr2)2). The structures of the sulfide and selenide complexes [((nacnac)V = E)2(μ,ƞ2-E2)] (E = S (2), Se (3)) are similar; the chalcogenides act both as bridging (E2 2-) and terminal (E2-) ligands. In compound [V2(µ-Te)2(nacnac)2] (4), all tellurium atoms are present only as bridging Te2- ligands. The compounds have been characterized by IR-spectroscopy, elemental analysis, and single-crystal X-ray diffraction. The possibility of the formation of additional V = Te bonds in 4 has been studied using Hirshfeld analysis. It has been found that the difference in the reactivity of 1 towards Te is not due to the steric hindrance.
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Disclosure statement
No potential conflict of interest was reported by the authors.