Complexes of copper (II) acetate with nicotinamide: preparation,characterization and fungicidal activity; crystal structures of [Cu2 (O2CCH3)4 (nia)] and [Cu2 (O2CCH3)4 (nia)2] |
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| Affiliation: | 1. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, P.O. Box 537, 1001 Ljubljana, Slovenia;2. Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Rožna dolina, C. VIII/34, 1000 Ljubljana, Slovenia;3. Department of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London SW7 2AY, UK;4. Institut für Anorganische Chemie, Universität Leipzig, Linnestraße 3, 04103 Leipzig, Germany;1. Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;2. Department of Chemistry, University of Jyväskylä, PO Box 35, FI-40014, Finland;3. Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan;1. N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, GSP-1, Leninsky prosp. 31, 119991 Moscow, Russian Federation;2. Lomonosov Moscow State University, Department of Chemistry, GSP-1, Leninskie Gory 1/3, 119991 Moscow, Russian Federation;1. Department of Studies in Physics, University of Mysore, Manasagangotri, Mysuru 570 006, Karnataka, India;2. Department of Chemistry, Sri Jayachamarajendra College of Engineering, Mysuru 570 006, Karnataka, India;3. Department of Biotechnology, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India;4. PG Department of Chemistry, JSS College of Arts, Commerce and Science, Mysuru 570 025, Karnataka, India |
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| Abstract: | ![]()
Three new copper (II) acetate complexes with nicotinamide (nia) were synthesized analyzed and characterized by standard chemical and physical methods and tested for fungicidal activity The crystal and molecular structures of the compounds [Cu2 (O2CCH3)4 (nia)] (1B) and [Cu2 (O2CCH3)4 (nia)2] (2) were determined by X-ray diffraction Both consist of binuclear units of bridging tetracarboxylate type however they differ in the bonding mode of nicotinamide molecules They are bonded at the apical positions of the dimers and connect them in an infinite chain in 1B On the other hand the dimers remain isolated in the structure of the compound 2 It seems that compound 1B is the first example where a nicotinamide molecule acts as a bidentate bridging ligand The results of EPR spectra agree with the dimeric nature of the complexes Dissolved in water or DMSO the compounds completely stop mycelial growth at a concentration of 50×10−3 mol l−1 Less concentrated solutions (up to 10×10−3 mol l−1) show weaker fungicidal activity. |
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