in n-heptane treating a heptane soln. of VCl4 (made up to 80ml with heptane) with dry HBr at room temp. (bright violet soln., sepn. of a solid); repeating vac./HBr operation 5 times/2h, formation a brown-black solid in a red-orange soln.; stirring, room temp., 48h;; filtration; washing with heptane; drying in vac. at room temp. affording a 80:20 mixture of VCl2Br and VCl3; elem. anal.;;
参考文献
Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), , # 5 p. 655 - 658
