摘要:
Six new monocationic trialkylphosphines, [P(CH(2)NH(2)R){CH(2)N(R)CH(2)N(R)CH(2)}](+) (R = C(6)H(5)CH(2), 4- FC(6)H(4)CH(2), 4-ClC(6)H(4)CH(2), 4-CH(3)C(6)H(4)CH(2)) as their Cl(-) (1c, 1d) or BPh(4)(-) (2a-2d) salts, are described. All compounds have been characterized by (31)P{(1)H} spectroscopy, FTIR spectroscopy, and elemental analysis. A single crystal X-ray structure determination of 2a has been performed. In contrast to recent examples reported by us, only one intramolecular N-H center dot center dot center dot N hydrogen bond was observed in molecules of 2a; the other N H was involved in an N-H center dot center dot center dot pi intermolecular interaction to the BPh(4)(-) anion.