Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.025 seconds
[en] By the method of 17O NMR it has been ascertained that in acidified aqueous solutions of Na2MoO4 - Na2WO4 in pH existance range of paramolybdate Mo7O246- and paratungstates W7O246- and H2W12O4210- mixed heptametallates Mo7-xWxO246- (x =1 - 6) are formed. With the change in Mo/W ratio in solution from 9:1 to 1:9 five lines from tetradentately coordinated O atoms are observed in the following surroundings: OMo4, OMo3W, OMo2W2, OMoW3 and OW4 at 122, 105, 91, 80 and 68 (± 2) m.p. respectively. No formation of mixed complexes on H2W12O4010- basis was observed
Journal
