Préparation et étude des isothiocyanatoboranes halogènes

Abstract

The mixed halide–pseudohalides BXn(NCS)3−n (n = 1 or 2) have been obtained except for X = F. Mixtures of these compounds with boron trihalide and boron triisothiocyanate are prepared by the reaction of BX3 either with metal isothiocyanates or with boron triisothiocyanate. Mass spectrometry, infrared, Raman, and 11B nmr data are reported. Rapid redistribution reactions prevent the isolation of the mixed species. Vibration spectrometry shows that boron is bonded to the nitrogen of the NCS group and not to the sulfur.