C. Saxena et Rv. Singh, SYNTHESIS AND CHARACTERIZATION OF SOME UNSYMMETRICAL BOROLE COMPLEXES, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 35(8), 1996, pp. 707-709
Reaction of unsymmetrical 2-isopropoxybenzo-1,3-dioxa-2-borole with se
mi- and thiosemicarbazones of heterocyclic methyl ketones in benzene s
olution give different types of complexes with general formula [OC6H4O
B(L(n))], where L(n) is the deprotonated form of the ligand L(n)H; n =
1-8). The spectroscopic results show that the ligands behave in a bid
entate fashion whereas the complexes display a tetracoordinated enviro
nment around boron as stereochemically active lone pair is also includ
ed in the coordination sphere.