Y. Sugihara et al., STRUCTURE OF 8-(DIETHYLBORYLMETHYLAMINO)-3-PHENYL-1-AZAAZULENE - CHARACTERISTICS OF THE NONALTERNANT LIGAND, New journal of chemistry, 22(10), 1998, pp. 1031-1033
8-(Diethylborylmethylamino)-3-phenyl-1-azaazulene (5) has been synthes
ized, in which the 8-methylamino-azaazulene moiety is found to act as
a bidentate ligand whose two boron-nitrogen bond lengths are almost eq
uivalent.