Abstract
Reactions of niobium pentachloride with 4-t-butylphenol and 4-methoxyphenol in 1:5 molar ratios in CC14 have yielded pentaaryloxides of the composition Nb(OAr)5 and these have been characterized by chemical analyses, conductivity measurements, IR, 1H NMR, and UV-Vis studies. Double phenoxides of the composition M(I)[Nb(OAr)6] [M(I) = Na or K] have also been obtained by reacting alkali metal phenoxides with Nb(OAr)5 in equimolar ratios as evidenced from conductance composition curves. Further, the reactions of these double phenoxides with divalent cobalt and nickel chlorides form hetero-bimetallic compounds of the composition M(II)[Nb(OAr)6]2. The thermal behaviour of the compounds isolated in the present studies has also been discussed.
Published Version
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