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The molecular structure of 2-[bis(2-chloroethyl)-amino]-6-t-butyloxymethyl-tetrahydro-2H-1,3,2-oxazaphosphorine-2-oxide has been determined by X-ray diffraction method.The crystal(C12H25Cl2NaO3P)is monoclinic with space group P21/a,a=11.965(2),b=10.335(3),c=14.543(5)A,β=102.24(2)°,V=1758(2)A3,Mr=347.22,Z=4,Dx=1.31 g/cm3,μ=4.66 cm-1,F(000)=736,R=0.051,Rw=0.054.The six-membered ring in this compound is in a distorted chair conformation with the t-butyloxymethyl group and the phosphoryl oxygen atom in equatorial positions which lead to cis-configuration.
The molecular structure of 2- [bis (2-chloroethyl) -amino] -6-t-butyloxymethyl-tetrahydro-2H-1,3,2-oxazaphosphorine-2-oxide has been determined by X-ray diffraction method. (C12H25Cl2NaO3P) is monoclinic with space group P21 / a, a = 11.965 (2), b = 10.335 (3), c = 14.543 (5) A, Mr = 347.22, Z = 4, Dx = 1.31 g / cm3, μ = 4.66 cm-1, F (000) = 736, R = 0.051, Rw = 0.054 The six-membered ring in this compound is in a distorted chair conformation with the t-butyloxymethyl group and the phosphoryl oxygen atom in equatorial positions which lead to cis-configuration.