An organoimido derivative of the hexatungstate cluster: Preparation and structure of [W{sub 6}O{sub 18}(NAr)]{sup 2{minus}} (Ar = 2,6-(i-Pr){sub 2}C{sub 6}H{sub 3})
- Kansas State Univ., Manhattan, KS (United States)
- Univ. of Delaware, Newark, DE (United States)
Polyoxotungstate systems occupy a prominent position in the constellation of polyoxometalate anions, largely because of their utility in diverse applications. A sampling of current research involving polyoxotungstate components includes their use as oxidation-resistant ligands, the preparations of polyoxoanion-supported complexes and catalysts, photo- and electroluminescence studies, and evaluations of their efficacy as anti-HIV agents. The development of synthetic methodologies for the preparation of functionalized polyoxotungstate systems seems therefore to hold the promise of enhancing their usefulness. One of the simplest polyoxotungstates is the octahedral hexatungstate, [W{sub 6}O{sub 19}]{sup 2{minus}}, whose structure has been reported by Fuchs. Given recent successes in the direct functionalization of the [Mo{sub 6}O{sub 19}]{sup 2{minus}} analogue to produce a variety of organoimido-hexamolybdate derivatives, the preparation of corresponding imido-hexatungstate species was an appealing prospect. Despite several attempts utilizing a variety of imido delivery reagents, however, the authors have been unable thus far to prepare any imido-hexatungstate species by direct methods; the authors therefore sought an alternative route and now report the preparation and structure of the imido-hexatungstate system [Bu{sub 4}N]{sub 2}[W{sub 6}O{sub 18}{minus}(NAr)], (Ar=2,6-(i-pr){sub 2}C{sub 6}H{sub 3}).
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-92ER14246
- OSTI ID:
- 457126
- Journal Information:
- Inorganic Chemistry, Vol. 34, Issue 1; Other Information: PBD: 4 Jan 1995
- Country of Publication:
- United States
- Language:
- English
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