Synthesis, Characterisation, Crystal Structure, and Antimicrobial and Larvicidal Studies of [Cu(2,2'-bipy)2 SO4 ].3CH4 N2 O.2H2 O

A pentacoordinated mononuclear copper(II) complex, namely, bis(2,2'-bipyridine)sulphatecopper(II) urea trisolvate dihydrate, has been synthesised and characterised by molar conductance and UV-Vis and FTIR spectra. The structure of the complex was unambiguously confirmed by single crystal XRD. The complex crystallizes in monoclinic system, space group C2/c , with the values a = 20.155(4), b = 20.858(4), and c = 14.425(3) Aa; alpha = 90.00 degree , beta = 96.51 degree , and gamma = 90.00 degree ; V = 6025(2) Aa super(3) and Z = 8. The Cu(II) ion is coordinated to four nitrogen atoms of two bidentate 2,2'-bipyridine ligands (bipy) and by one oxygen atom of the sulphate group and displays distorted trigonal bipyramidal geometry. The crystal packing is stabilized by inter- and intramolecular hydrogen bonding. The Cu(II) complex was screened for antimicrobial activity against Staphylococcus aureus , Escherichia coli , Klebsiella pneumonia , Aspergillus niger , Aspergillus flavus , and Candida albicans . Larvicidal activity of the synthesized copper(II) complex was carried out against larvae of Culex quinquefasciatus and Anopheles subpictus .