The reaction of nido-B5H9 with MeHSi(NMe2)(2) yields a new silyl substitute
d tetraborane(8) derivative (Me2N)(2)BH2MeSiB4H8 (1). The silyl substituent
is part of a new four membered ring system SiR2(NR2')(2)BH2+. The reaction
product has been characterized by X-ray crystallography, multinuclear and
multidimensional NMR spectroscopy, mass spectrometry and elemental analyses
. (C) 1998 Elsevier Science S.A. All rights reserved.