Formation of bi- and tetranuclear cobalt(ii) trimethylacetate complexes with 2-amino-5-methylpyridine and 2,6-diaminopyridine |
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| Authors: | Pakhmutova E. V. Malkov A. E. Mikhailova T. B. Sidorov A. A. Fomina I. G. Aleksandrov G. G. Novotortsev V. M. Ikorskii V. N. Eremenko I. L. |
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| Affiliation: | (1) N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian Federation;(2) Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 prosp. Akad. Lavrentieva, 630090 Novosibirsk, Russian Federation |
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| Abstract: | The reactions of the polymeric complex [Co(OH)n(OOCCMe3)2–n]x (1) with 2-amino-5-methylpyridine (L1) and 2,6-diaminopyridine (L2) under anaerobic conditions at the ratio M : L = 1 : 1 afforded the binuclear complexes Co2( -OOCCMe3)4[ -MeC5H3N(NH2)]2 (2) and Co2(-OOCCMe3)4[-C5H3N(NH2)2]2 (3), respectively, with Chinese-lantern-like structures. The reaction of the tetranuclear cobalt(ii) complex Co4(3-OH)2(-OOCCMe3)4(2-OOCCMe3)2(EtOH)6 (4) with 2,6-diaminopyridine under anaerobic conditions at the ratio M : L2 = 2 : 1 gave rise to the antiferromagnetic tetranuclear complex Co4(4-O)[-C5H3N(NH2)2]2(-OOCCMe3)4(2-OOCCMe3)2 (5) with tetradentate-bridging coordination of the oxygen atom. The structures of the compounds synthesized were established by X-ray diffraction analysis. |
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| Keywords: | 2-amino-5-methylpyridine 2,6-diaminopyridine cobalt complexes X-ray diffraction analysis |
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