G. Ferguson et al., BOROSILICATE COMPOUNDS OF THE TYPE H2N(CH2)3OB(R)(OSIR3') - THE STRUCTURE OF DIMETHYLPHENYLSILOXY)-2-PHENYL-1,3,2-OXAZABORINANE, Polyhedron, 12(8), 1993, pp. 859-864
The syntheses of compounds of the types H2N(CH2)3OB(Ph)(OSiR3')[R3' =
Me3 (1), Me2Ph (2), McPh2 (3), Ph3 (4)] and H2N(CH2)3OB(Bu)(OSiR3') [R
3' = Me2Ph (5), MePh2 (6), Ph3 (7)] arc reported. The structure of 2 w
as determined by X-ray crystallography. There are two independent mole
cules in the unit cell. Both molecules contain tetrahedral BCNO2- and
SiC3O- units joined by B-O-Si bridges with angles of 145.7(3)-degrees
and 150.5(3)-degrees, respectively. In solution compounds 1-7 are invo
lved in intramolecular equilibrium reactions between four- and three-c
oordinate boron species with the latter formed by scission of the B-N
bond.