Paper Title
Synthesis, Spectroscopy, Thermal Analysis and Antifungal Activity of Trans-[Cu(C7h3n2o6)2(H2o)2]N and its Ligand
Abstract
The title compound trans-diaquabis (3,5-dinitrobenzoato)copper(II), trans-[Cu(C7H3N2O6)2(H2O)2]n or (2), has
been synthesized from the reaction of copper(II) chloride dihydrate and a 3,5-dinitrobenzoic acid (C7H4N2O6 or (1)). These two
compounds have been characterized by single crystal X-ray diffraction, elemental analysis, FT-IR, UV-Vis spectroscopy and
thermal analysis. X-ray structure determination of the pale yellow compound (1) crystallizes in space group C2/c. The green
compound (2) crystallizes in asymmetrical orthorhombic space group Pna2(1). Compound (1) is another form of
3,5-dinitrobenzoic acid which contains the 𝐑𝟐
𝟐(𝟖) carboxylic acid dimers and N-OO intermolecular interactions yielded the
corrugated sheets in crystal motifs. The polymeric structure of (2) consists of not only a trans compound but also the
Jahn–Teller distorted [CuO4O2] octahedral geometry. Ligands 3,5-dinitrobenzoato of trans-[Cu(C7H3N2O6)2(H2O)2] acting as
bidentate bridging ligands to form the one-dimensional (1-D) polymer. Infrared spectra of these two compounds reveals the
stretching and bending frequencies of important groups such as –OH, -COO-, NO2 and rings. The intense UV-Visible spectral
bands correspond to π-π* of the aromatic ring in both compounds and d-d transition of compound (2). Thermal analysis of
compounds (2) shows their weight losses. The compounds were tested for the in vitro antifungal activity.
Keywords— In vitro antifungal activity, Jahn–Teller distorted octahedral geometry, One-dimensional polymeric copper
compound