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Studies in Binuclear Semicarbazone Complexes of Boron Having B-O-B Linkage

1988; Taylor & Francis; Volume: 18; Issue: 8 Linguagem: Inglês

10.1080/00945718808060821

1532-2440

Vijay Pal Singh, S. Singh, R. V. Singh, J. P. Tandon,

Advanced Chemical Sensor Technologies

Abstract The reactions of oxybis(diacetoxyborane) with bifunctional tridentate semicarbazones derived from the condensation of 2-hydroxy-2-phenylacetophenone, 1-phenyl-1,3-butanedione, 2-hydroxyacetophenone, 2,4-pentanedione, 3-hydroxy-2-butanone, 2-hydroxy-1-naphthaldehyde and 2-hydroxybenzaldehyde with semicarbazide hydrochloride have been carried out in 1:1 and 1:2 molar ratios. The resulting derivatives of the type (Scz)B-O-B(OAc)2 and (Scz)B-O-B(Scz) (where Scz−2 represents the anion of semicarbazone) are coloured solids, non-electrolytes and monomeric in nature. On the basis of analytical data and infrared, electronic, 1H, 11B and 13C NMR spectral studies, tetra-coordinated structures have been assigned to the resulting boron complexes.