三苯基膦还原制备ReOCl_3(PPh_3)_2的研究

STUDY OF REDUCING PREPARATION ReOCl_3(PPh_3)_2 WITH PPh_3

摘要: 用三苯基膦 (PPh3)为还原剂 ,制得了单一价态的Re(Ⅴ )化合物ReOCl3(PPh3) 2 。通过独立变量法确定了ReOCl3(PPh3) 2 的最佳制备条件 ,对化合物进行了表征并测定其稳定性。结果表明 ,化合物在室温下性质稳定 ;控制盐酸浓度、PPh3和萃取剂的量等条件 ,ReOCl3(PPh3) 2 的产率可达到 95 %以上。说明在制备ReOCl3(PPh3) 2 中PPh3可望取代常用的还原剂Sn(Ⅱ )。

Abstract: In order to get the single rhenium(Ⅴ) compound ReOCl 3(PPh 3) 2, PPh 3(trephine phosphate) is selected as reducing agent for a single rhenium(Ⅴ) compound,and ReOCl 3(PPh 3) 2 in CH 2Cl 2/concentraed HCl system is successfully prepared by confirming the best reaction. The single rhenium(Ⅴ) compounds are investigated on their properties, which in turn prove the success of the preparation.