名称:
Synthesis and characterization of new phosphanylium and phosphanetriylammonium salts. Molecular structures of [(Me2N)PN(AlCl3)R] and [P(NPri2)(NHR)]+[CF3SO3]–(R = C6H2But3-2,4,6)
摘要:
The new internal salts [(R(1)R(2)N)PN(ECl(3))R] (E = Al or Ga; R = 2,4,6-Bu(3)(t)C(6)H(2)) and phosphanylium salts [P(NR(1)R(2))(NHR)](+)[C6(3)SO(3)](-) have been synthesized by treating aminoiminophosphanes (R(1)R(2)N)P=NR with AlCl3, GaCl3 or CF3SO3H. Protonation of RHN-P=NR with trifluoromethanesulfonic acid led to the first stable phosphanylium salt [P(NHR)(2)](+)[CF3SO3](-) with two primary amino groups. In contrast, the reaction of AlCl3 with the (aryloxy) iminophosphane (R'O) P=NR (R' = 4.Me-2,6-Bu(2)(t)C(6)H(2)) led to the new aryl(phosphanetriyl)ammonium complex [PNR](+)[(R'O)AlCl3](-). All compounds were characterized by multinuclear NMR spectroscopy. The crystal structures of [(Me(2)N)PN(AlCl3)R] and [P(NPr2i)(NHR)](+)[(CFSO3)-S-3](-) have been determined by single-crystal X-ray diffractometry.