N'(2),N'(5)-Bis[(E)-2-hy-droxy-benzyl-idene]-3,4-dimethyl-thio-phene-2,5-dicarbohydrazide.
In the title mol-ecule, C(22)H(20)N(4)O(4)S, both C=N bonds are in an E conformation. The benzene rings form dihedral angles of 12.10 (13) and 25.17 (12)° with the thio-phene ring. The dihedral angle between the two benzene rings is 17.59 (14)°. There are two intra-molecular O-H⋯N hydrogen bonds. In the crystal, N-H⋯O hydrogen bonds connect mol-ecules into chains along [010].
Laboratory of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715,  People's Republic of China.
Shao-Lin
SL
Zhang
Ling
L
Zhang
Qin-Mei
QM
Wen
Rong-Xia
RX
Geng
Cheng-He
CH
Zhou