TY - JOUR ID - 133274 TI - Synthesis and infrared spectroscopic studyof N,N'-bis(4-methoxybenzylidene)thiourea with its Co(II) and Ni(II) homobinuclear complexes JO - Chemical Review and Letters JA - CRL LA - en SN - 2676-7279 AU - Ahmed, Abubakar Abdullahi AU - Joshua, Dogara Madani AU - Kubo, Abdulrahman Ibrahim AD - Department of Pure and Applied Chemistry, Faculty of Science, University of Maiduguri, Borno State, Nigeria. AD - Department of Pure and Applied Chemistry, University of Maiduguri, Borough State, Nigeria AD - Department of Pure and Applied Chemistry, Adamawa State University, Mubi, Adamawa State Y1 - 2021 PY - 2021 VL - 4 IS - 3 SP - 171 EP - 177 KW - Diazamonothio ligand KW - Thermostability KW - Tridentate KW - Homodinuclear KW - gravimetric DO - 10.22034/crl.2021.291141.1112 N2 - New homobinuclear complexes of Co(II) and Ni(II) with a Schiff base, N,N’-bis(4-methoxybenzylidene)thiourea derived from [2+1] condensation reaction of 4-methoxybenzaldehyde and thiourea have been synthesized by conventional method. The Schiff base ligand and the complexes were characterized as appropriate by gravimetric determination of chloride content, thermogravimetric estimation of uncoordinated water, melting point, molar conductance measurement and infrared spectroscopy. The ligand was white crystalline solid of sharp melting point (150 oC) whereas the Co(II) and Ni(II) complexes were blue and golden colour with decomposition temperature of 190 oC and 198 oC, allusive of thermostability. Both complexes were hydrated and non-electrolytic in nature with four chloride ions coordinated to the bimetallic ions. The IR study revealed that the ligand is a neutral tridentate diazamonothio moiety coordinated to the Co(II) and Ni(II) ions through its two azomethane nitrogen atoms (C=N) and thione sulphur. The resultant data suggest formation of the homobinuclear complexes as [M2LCl4].nH2O, (where M2+=Co or Ni, L=Schiff base ligand and n=4 for Co and 6 for Ni complex), possessing square planar structure. UR - https://www.chemrevlett.com/article_133274.html L1 - https://www.chemrevlett.com/article_133274_0ab36092efb13eacbdcbe6960c4a6091.pdf ER -