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2-Diethylamino-l-p-tosyl-3-p-chlorophenyl-1, 3,2-diazaphospholidin-4-one was obtained by the reaction of P (NR2)s with p-tosylglycine p-chloropheny-lamide. Its crystal and molecular structure has been determined by X- ray diffraction method. The crystal C19H23ClN3O3PS is monoclinic with space group P21/c,a=8. 120,b= 11. 165(2),c= 23. 61 (6) A,β=96. 28(2) ,V = 2127. 8 A3,Z=4,Dx= 1. 289g/cm3, Mr = 415. 88,μ=3. 656cm-1,F(000) = 872,R = 0. 057,and RW=0. 070,The lone pair of eletrons of the nitrogen atom out of the ring and that of the phosphorus atom are predominantly in perpendicular conformation. The five-membered ring of 1-p-tosyl-3-p-chlorophenyl-l,3,2-diazaphospholidin-4-one is eventually coplanar.
2-Diethylamino-lp-tosyl-3-p-chlorophenyl-1, 3,2-diazaphospholidin-4-one was obtained by the reaction of P (NR2) s with p-tosylglycine p-chloropheny-lamide. The crystal C19H23ClN3O3PS is monoclinic with space group P21 / c, a = 8. 120, b = 11. 165 (2), c = 23. 61 (6) A, 96. 28 (2), V = 2127. 8 A3, Z = 4, Dx = 1.289g / cm3, Mr = 415.88, μ = 3.656cm- 1, F (000) = 872, R = 0 . 057, and RW = 0. 070, The lone pair of eletrons of the nitrogen atom out of the ring and that of the phosphorus atom are predominantly in perpendicular conformation. The five-membered ring of 1-p-tosyl-3-p -chlorophenyl-l, 3,2-diazaphospholidin-4-one is eventually coplanar.