2-((E)-{2-[(1E)-(2,4-Dihydroxy-benzyl-idene)amino]phen-yl}iminiometh-yl)-5-hydroxy-phenolate methanol solvate.

ABSTRACT: The asymmetric unit of the title compound, C(20)H(16)N(2)O(4)·CH(3)OH, contains two Schiff base zwitterions and two methanol solvent mol-ecules. The dihedral angles between the central benzene ring and the two outer benzene rings of the Schiff base are 2.57?(7) and 52.30?(7)° in one mol-ecule and 5.83?(7) and 49.82?(7)° in the other mol-ecule. Intra-molecular O-H?N and N-H?O hydrogen bonds generate S(6) ring motifs, whereas intra-molecular N-H?N hydrogen bonds generate S(5) ring motifs. In the crystal structure, O-H?O, hydrogen bonds and weak C-H?O inter-actions link the mol-ecules into one-dimensional chains along the b-axis direction and are further connected by O-H?O and weak C-H?O inter-actions into a three-dimensional network. C-H?? and ?-? inter-actions [centroid-centroid distances = 3.6228?(9) and 3.6881?(9)?Å] are also observed in the crystal structure.

SUBMITTER: Eltayeb NE 

PROVIDER: S-EPMC2961737 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature