Spectroscopic studies of manganese(II) and zinc(II) complexes of 1-phenyl-3-methyl-4-acylpyrazolone-5
Affiliation:
1. Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, West Sumatera, 25173, Indonesia;2. Nanotechnology Research Centre, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia;;3. Deparment of Chemistry Education, Faculty of Mathematics and Natural Science, Yogyakarta State University, Indonesia;1. School of Science, Honghe University;2. Key Laboratory of Natural Pharamaceutical & Chemical Biology of Yunnan Province Mengzi, Yunnan 661100, P.R. China;3. Fujian Key Lab of Medical Instrument & Pharmaceutical Technology, Yishan Campus, Fuzhou University, Fuzhou, Fujian 350002, China
Abstract:
Mn(II) and Zn(II) complexes of a series of 4-acyl derivatives of 1-phenyl-3-methylpyrazolone-5 have been synthesized. Characterization was by elemental analyses, UV, IR and 1H NMR analyses. The chelates were found to conform to a general molecular formula ML2·xCH3CH2OH·yH2O where M = Mn, Zn; L is the acylpyrazolone-5 anion; x = 0, 1 or 2; and y = 0, 1 or 2. Spectral analyses showed that the adducts associated with the complexes have no effect on the bathochromic shifts observed in the UV and IR spectral properties of the complexes. The stability of the C
