ic8b00651_si_001.pdf (1.86 MB)
Reductive Formation of a Vanadium(IV/V) Oxide Cluster Complex [V8O19(4,4′‑tBubpy)3] Having a C3‑Symmetric Propeller-Shaped Nonionic V8O19 Core
journal contribution
posted on 2018-06-13, 12:19 authored by Yuta Inoue, Shintaro Kodama, Nobuto Taya, Hirohiko Sato, Katsuyoshi Oh-ishi, Youichi IshiiA novel C3-symmetric propeller-shaped vanadium(IV/V) oxide cluster
complex, [V8O19(4,4′-tBubpy)3] (V8′), has been synthesized from the reaction of
the windmill-shaped vanadium(V) oxide cluster complex [V8O20(4,4′-tBubpy)4] (V8) with PPh3 under N2, whereas refluxing V8 in methanol or ethanol under N2 provides
tetranuclear oxido(alkoxido)vanadium(IV/V) complexes [V4O6(OR)6(4,4′-tBubpy)2] [R = Me (V4′-Me) and Et (V4′-Et)]. The mixed-valent vanadium(IV/V)
clusters V8′ and V4′ are converted back to V8 under
O2. Interconversions of V4′ and the oxido(alkoxido)vanadium(V) complexes
[V4O8(OMe)4(4,4′-tBubpy)2] (V4) and [V7O17(OEt)(4,4′-tBubpy)3] (V7-Et) are also presented.