“…31 P NMR (162.0 MHz, DMSO-d 6 ): 57.25 (m); 1 H NMR (400.1 MHz, DMSO-d 6 ): 1.05 (m, 6H), 1.15 (m, 9H), 1.51 (br m, 3H), 1.64 (br m, 6H), 1.85 (br m, 6H), 2.95 (br m, 3H), 3.63 (pseudo-t, J = 9.2/9.6 Hz, 3H, NH); 13 C NMR (100.6 MHz, DMSO-d 6 ): 25.75 (d, J P,C = 4.7 Hz), 35.72 (d, J P,C = 4.9 Hz), 40.44 (s), 50.48 (s) {the 31 P chemical shift of P(S)[NHC 6 H 11 ] 3 in CDCl 3 was reported at 59.1 p.p.m. ; Hursthouse et al, 1986}. Compound (II) was synthesized from the reaction of C 6 H 5 NHNH 2 (20 mmol) and P(S)[OC 2 H 5 ] 2 Cl (10 mmol) in dry CH 3 CN [with a stirring time of 3 h and using the purification procedure mentioned for (I)]. Single crystals were obtained from a solution of the product in CH 3 C(O)CH 3 / CH 3 CN (1:1 v/v) after slow evaporation at room temperature.…”