Bonding studies of compounds of boron and the Group 3–5 elements. Part XIV. Redistribution equilibria in phenylboron dihalide and boron trihalide systems
作者:S. S. Krishnamurthy、Michael F. Lappert、J. Brian Pedley
DOI:10.1039/dt9750001214
日期:——
reactions for two sets of trigonal boron systems, (i) PhBX2–PhBY2 and (ii)PhBX2–BY3, have been investigated, principally by 11B n.m.r. spectroscopy for samples in sealed tubes. For (i) when X = F and Y = Cl or Br, equilibrium constants at 316·5 K have been obtained, and small ΔH⊖ values and close to statistical ΔS⊖ for the former have been derived from second-law plots. For (ii), PhBF2 and BCl3 or BBr3 give