A New 3d-4f Heterobimetallic Complex Based on 4,4′-Dicarboxybiphenyl Sulfone:Synthesis,Crystal Structure and Antifungal Activity

A new 3 d-4 f heterobimetallic complex [PrCu（sba）2（Hsba）（H2 O）3]·H2 O（1） based on a versatile ligand H2 sba（H2 sba = 4,4？-dicarboxybiphenyl sulfone） was prepared and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermogravimetric analysis. Single-crystal X-ray diffraction indicates that complex 1 belongs to the monoclinic system, space group P21/n with a = 12.4642（11）, b = 16.0586（16）, c = 21.9678（19） ？, β = 92.888（1）o, V = 4391.4（7） ？3, Z = 4, Dc = 1.800 g·cm-3, μ = 1.812 mm-1, Mr = 1190.31, F（000） = 2388, the final R = 0.0663 and wR = 0.1539 for 7737 observed reflections with I 〉 2s（I）. Complex 1 exhibits 2D network skeletons which are linked by hydrogen-bonding interactions to give a 3D supramolecular architecture. In addition, the antifungal effects of H2 sba, metal salts and the title complex have also been studied by disc diffusion method against Colletotrichum gloeosporioides Penz. Complex 1 has better antifungal activity than H2 sba and the corresponding metal salts. Complex 1 has potential applications in the antifungal activity.