afforded [(IPr)PP(IMes)] (4). The corresponding radical cation [(IPr)PP(IMes)]˙+ (5˙+) is isolated as [5]PF6 by reaction of 4 with ferrocenium hexafluorophosphate, whereas complexes containing the corresponding dication [(IPr)PP(IMes)]2+ (62+) can be isolated as the gallate and borate salts [6](GaCl4)2 and [6](BArF)2 by chloride abstraction from 3 with GaCl3 or sodium tetrakis[bis(3,5-trifluoromethyl)phenyl]borate
通过卡宾-次亚膦加合物(IPr)PSiMe 3(1,IPr = 1,3-双(2,6-二异丙基苯基)
咪唑啉-2-亚烷基)与卡宾-的反应制备N-杂环二卡宾-二
磷杂种
三氯化磷加合物(I
MES)PCl 3(2,I
MES = 1,3-双(2,4,6-三甲基苯基)
咪唑啉-2-亚基),得到二
氯化物[(IPr)PPCl(I
MES)] Cl(3)。用
钾石墨(KC 8)还原3得到[((IPr)PP(I
MES)]](4)。相应的自由基阳离子[(IPR)PP(I
MES)]˙ +(5 ˙ +)分离为[ 5 ] PF6通过4与
六氟磷酸铈反应,而含有相应的[[IPr] PP(I
MES)] 2+( 6 2+)的络合物可以作为
没食子酸盐和
硼酸盐[ 6 ](GaCl 4) 2和[通过分别用GaCl 3或四[双(3,5-三
氟甲基)苯基]
硼酸钠(NaBAr F)从3中提取
氯化物得到6 ](BAr F) 2。N杂环卡宾
配体的不对称集允许建立249