A new class of functionalized polyoxometalates: Synthetic, structural, spectroscopic, and electrochemical studies of organoimido derivatives of [Mo{sub 6}O{sub 19}]{sup 2{minus}}
A convenient method for the systematic introduction of a variety of organoimido ligands at terminal oxo sites in the hexamolybdate cluster [Bu{sub 4}N]{sub 2}[Mo{sub 6}O{sub 19}] is described, consisting of reaction with the appropriate organic isocyanate RNCO (R = n-butyl, cyclohexyl, 2,6-diisopropylphenyl) in pyridine solution. Singly functionalized imido-hexamolybdates [Mo{sub 6O{sub 18}}(NR)]{sup 2{minus}} incorporating each of the above substituents are described. In the case of the 2,6-(diisopropyl)phenylimido ligand (NAr), multiple functionalization has also been achieved: hexamolybdate derivatives [Mo{sub 6}O{sub (19{minus}x)}(NAr){sub x}]{sup 2{minus}} incorporating two, three, four, and five NAr ligands at terminal sites have been prepared. The complexes have been characterized by cyclic voltammetry, multinuclear ({sup 1}H, {sup 14}N, {sup 17}O, and {sup 95}Mo) NMR and electronic spectroscopy, and single-crystal X-ray diffraction studies.
- Research Organization:
- Kansas State Univ., Manhattan, KS (US)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 20017349
- Journal Information:
- Journal of the American Chemical Society, Vol. 122, Issue 4; Other Information: PBD: 2 Feb 2000; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
Similar Records
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})
Osmium imido complexes: Synthesis, reactivity, and SCF-X[alpha]-SW electronic structure