Synthesis, crystal and molecular structure of tetraaquabis(nicotinamide)cobalt(II) phthalate dihydrate |
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| Authors: | A. S. Antsyshkina G. G. Sadikov T. V. Koksharova I. S. Gritsenko V. S. Sergienko |
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| Affiliation: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(2) Odessa National University, Dvoryanskaya ul. 2, Odessa, 65026, Ukraine |
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| Abstract: | The coordination compound of cobalt(II) with nicotinamide [CoL2(H2O)4][C6H4(COO)2] · 2H2O (I) (where L stands for nicotinamide) was synthesized and characterized by IR spectroscopy, conductometry, and thermogravimetry. The X-ray structure of complex I was determined. Crystals are monoclinic: a = 15.630(2) ?, b = 7.550(2) ?, c = 21.035(4) ?, β = 100.90(5)°, V = 2437.4(4) ?3, Z = 4, space group C2/c. The structural units of complex I are centrosymmetrical cations [CoL2(H2O)4]2+, anions [C6H4(COO)2]2− (lying on axis 2), and molecules of waster of crystallization. Complex cations are packed into layers are alternate with layers containing anions and free H2O molecules. This is a classical case of π-π-staking interactions that lead to the formation of supramolecular layered assemblies. Original Russian Text ? A.S. Antsyshkina, G.G. Sadikov, T.V. Koksharova, I.S. Gritsenko, V.S. Sergienko, 2009, published in Zhurnal Neorganicheskoi Khimii, 2009, Vol. 54, No. 8, pp. 1379–1384. |
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