
TY  - JOUR
A1  - Gheller, SF 
A1  - Sidney, M 
A1  - Masters, AF 
A1  - Brownlee, RTC 
A1  - O'Conner, MJ 
A1  - Wedd, AG 
T1  - Applications of molybdenum-95 N.M.R. spectroscopy. X. Polyoxomolybdates
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1984
VL  - 37
IS  - 9
SP  - 1825
EP  - 1832
KW  - 
UR  - https://doi.org/10.1071/CH9841825 
N2  - An initial survey of the 95Mo n.m.r. properties of a range of 12 polyoxomolybdates is presented. The species resonate in the range - 18 to + 140 ppm. The observed line widths generally exceed 100 Hz for six-coordinate molybdenum sites of low symmetry, but can be narrow (< 20 Hz at 20º) for four-coordinate sites. Aqueous solutions of [Mo7O24]6- at pH 6.1 exhibit exchange between Mo- and Mo7-based species. Solutions of &#945;-[Mo8O26]4- in MeCN feature a single narrow resonance (&#948;16, Wh/2 23 Hz at 20º) assigned to the tetrahedral capping sites, while two broad resonances (&#948;19, Wh/2 240 Hz; &#948;109, Wh/2 C. 270 HZ) are seen in equivalent solutions of &#946;-[Mo8O26]4-. In the cases cited above, 17O n.m.r. is used to confirm the integrity of sample solutions and assists in correction of the 95Mo n.m.r. properties of &#946;-[Mo8O26]4 reported in a previous communication. 
ER  -

