Research Article Synthesis, Characterization, and Evaluation of Antimicrobial and Antifertility Efficacy of Heterobimetallic Complexes of Copper (II) Ashu Chaudhary and Anshul Singh Department of Chemistry, Kurukshetra University, Kurukshetra 136 119, India Correspondence should be addressed to Ashu Chaudhary; ashuchaudhary21@gmail.com Received 10 May 2017; Revised 6 July 2017; Accepted 30 July 2017; Published 2 October 2017 Academic Editor: Hakan Arslan Copyright © 2017 Ashu Chaudhary and Anshul Singh. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Heterobimetallic complexes of the copper with remarkable antimicrobial and antifertility action have been synthesized by the conventional method by reacting CuCl 2 and o-phenylenediamine in the methanolic medium forming the mononuclear complex of the type [Cu(C 6 H 8 N 2 ) 2 ]Cl 2 which was further treated with group 4 or 14 organometallic dichlorides (Ph 2 M  Cl 2 , Me 2 M  Cl 2 , and Cp 2 M  Cl 2 ) [M  = Sn, Si, and M  = Ti, Zr] leading to formation of heterobimetallic complexes. All the synthesized complexes were characterized in the light of various physicochemical techniques like elemental analyses, conductivity measurements, molecular weight determination, electronic and infrared spectra, electronic spin resonance, X-ray, and mass spectral studies. Te in vitro antibacterial activity of synthesized complexes against Escherichia coli and Staphylococcus aureus was tested to evaluate their inhibiting activities. Te antifungal activities of mono- and heterobimetallic complexes were studied by screening the compounds against Fusarium oxysporum and Alternaria alternata. Tese complexes were then investigated to reveal their efect on the reproductive organs of male rats. Te treatment has shown substantial decline in the sperm motility and density signifying the imperious antifertility activity. 1. Introduction Over the past few decades, studies on heterobimetallic complexes have aroused as a conspicuous feld in the quest for new chemistry because of their plausible applications in fundamental, applied sciences, and coordination chemistry benefcial in industrial and synthetic processes such as cataly- sis, photochemistry, and biological systems. Heterobimetallic complexes have gained augmented research interest in recent years owing to the presence of two diferent metals which contributes to captivating structures and results in imperative applications. In recent years, bimetallic complexes encompassing two diferent metal centers have acknowledged escalated consid- eration owing to the assumption that their reactivity should vary signifcantly from that of monometallic complexes or homobimetallic complexes [1]. Te physical properties of these complexes are greatly afected by the presence of two metals in the same molecule along with an appreciable change in their reactivity. Tis is moreover due to the substantial modifcation in the individual properties of the metals or in the development of unique characteristics, which do not occur in monometallic compounds [2]. Varying applications of heterobimetallic complexes have been thoroughly explored which are found to be arising from the bifunctionality of the difering metal atoms [3]. Heterobimetallic complexes with transition metal ions have been subject of interest and entangled in biological processes of life [4]. Among the essential heavy metal ions in the human body, Cu 2+ is third in abundance afer Fe 3+ and Zn 2+ , and it plays very important role in several biological processes. Furthermore, many bimetallic complexes embroil- ing transition metals have been found to have potentials as antibacterial, anticancer, and antidiabetic agents [5]. Te treatment of infectious diseases still remains an important and exigent problem because of an amalgamation Hindawi Journal of Chemistry Volume 2017, Article ID 5936465, 9 pages https://doi.org/10.1155/2017/5936465