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

摘要

A new 3d-4f heterobimetallic complex [PrCu(sba)2(Hsba)(H2O)3].H2O (1) based on a versatile ligand H2sba (H2sba =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) (A),β =92.888(1)°,V=4391.4(7) (A)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 ＞ 2σ(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 H2sba,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 H2sba and the corresponding metal salts.Complex 1 has potential applications in the antifungal activity.