NMR Spectra of 4,$4^{\prime}$ -Bipyridyl, Pyrazine, and Ethylenediamine Coordinated to Undecatungstocobalto(Ⅲ)silicate and -borate Anions. Identification of 1 : 1 and Dumbbell-Shaped 1 : 2 Complexes
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- Bulletin of the Korean Chemical Society
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- v.14 no.6
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- pp.759-762
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- 1993