Synthesis, Crystal Structure and Antimicrobial Activity of {[Bis(pyridine-kN)bis(3,5-dinitrosalicylato k-O,O′)Zn(II)][bis(pyridine-kN)Zn(II)]}

A novel {[bis(pyridine-kN)bis(3,5-dinitrosalicylato k-O,O')Zn(II)][bis(pyridine-kN)Zn(II)]} (C34H24N8O14Zn2) was synthesized by a self-assemble method at room temperature. The molecular structure was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system, space group P2(1)/n with a = 12.2156, b = 13.5696, c = 22.5602 angstrom, beta = 90.061 degrees, Z = 4 and V = 3739.6(3) angstrom(3). The new 1D binuclear coordination polymer {[bis(py-kN)bis(3,5-dinitrosal k-O,O')Zn(II)][bis(py-kN)Zn(II)]} resulted from two different types of moieties. The polymer [bis(py-kN)bis(3,5-dinitrosal k-O,O')Zn(II)] unit is connected with [bis(py-kN) Zn(II)] by zigzag topology. One zinc (II) cation has a six-fold coordination environment, in which the metal atom is connected with four oxygen atoms of two 3,5-dinitrosalicylic acids to form equatorial bonds and two nitrogen atoms of pyridine to generate the axial bonds. Other four-fold nucleus contain two Zn-O bonds from different 3,5-dinitrosalicylic acids and two bonds with the N-atom of pyridine. Antimicrobial assay results indicated that the compound showed moderate activities against different bacterial and fungal strains.