DONOR-STABILIZED TRISALKINYLBORANES - CRY STAL-STRUCTURE OF H5C5N-B(C-CH)(3) AND ELECTRONIC-STRUCTURE OF B(C-CH)(3)

Authors
MADERNA A PRITZKOW H SIEBERT W SOMMERFELD T CEDERBAUM LS
Citation
A. Maderna et al., DONOR-STABILIZED TRISALKINYLBORANES - CRY STAL-STRUCTURE OF H5C5N-B(C-CH)(3) AND ELECTRONIC-STRUCTURE OF B(C-CH)(3), Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 52(11), 1997, pp. 1315-1320
Citations number
12
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
52
Issue
11
Year of publication
1997
Pages
1315 - 1320
Database
ISI
SICI code
0932-0776(1997)52:11<1315:DT-CSO>2.0.ZU;2-Z
Abstract
The synthesis and properties of donor-stabilized trisethinylborane com pounds 1 - 3 (donor = pyridine, tetrahydrothiophene, tetrahydrofuran) and of the tris(trimethylsilylethinyl)borane-diethylether adduct 4 are reported. Attempts to obtain donor-free trisorganylethinylboranes hav e failed. B-11 NMR data of 1 - 4 and the X-ray structure analysis of 1 and 3 reveal that the boron atoms are four-coordinated. The B-C bonds in 1 are somewhat longer and the C=C bonds shorter than in diborylace tylenes.