title: Diethyl {(4-methoxy-phen-yl)[5-(4-nitro-phen-yl)-1,3,4-thia-diazol-2-ylamino]meth-yl}phospho-nate.
abstract: The title compound, C(20)H(23)N(4)O(6)PS, was synthesized by the reaction of N-(4-methoxy-benzyl-idene)-5-(4-nitro-phen-yl)-1,3,4-thia-diazol-2-amine and diethyl phosphite. The thia-diazole and nitro-substituted phenyl rings in the mol-ecule are approximately coplanar, the dihedral angle being 5.3 (2)°. The dihedral angle formed by the mean plane through all non-H atoms of both the thia-diazole and the nitro-substituted phenyl ring with the plane of the meth-oxy-substituted phenyl ring is 48.9 (2)°. In the crystal structure, mol-ecules form centrosymmetric dimers as a result of N-H⋯O bonds involving amine H and phosphine oxide O atoms.
authors.affiliation: Department of Applied Chemistry, College of Science, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing 210009, People's Republic of China.
authors.forename: Li-He
authors.initials: LH
authors.lastname: Yin
authors.forename: Rong
authors.initials: R
authors.lastname: Wan
authors.forename: Feng
authors.initials: F
authors.lastname: Han
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Jin-Tang
authors.initials: JT
authors.lastname: Wang