Abstract
The coordination polymer of cobalt(II) nitrate with bicyclic bis(urea), 4,4,10,10-tetramethyl-1,3,7,9-tetraazaspiro[5.5]undecane-2,8-dione (Sk) {[Co(C11H20N4O2)2(H2O), Co(C11H20N4O2)2(H2O)2]4+(NO -3 )4} n (I), is synthesized for the first time, and its atomic structure is determined (CIF file CCDC no. 925792). The crystals of compound I are monoclinic: space group P2/c, a = 26.1284(6), b = 7.1763(2), c = 17.1825(5) Å, β = 105.042(3)°, V = 3111.43(15) Å3, ρcalcd = 1.474 g/cm3, Z = 2. The powder X-ray pattern at 293 K is refined using the Rietveld method to confirm the single-phase character of the obtained sample of powdered compound I: a = 26.1456(9), b = 7.1810(4), c = 17.1997(11) Å, β = 105.016(3)°, V = 3119.0(3) Å3. The content of the major phase of compound I in the sample is 100 ± 1%, and impurity phases are absent. The crystal of compound I contains two types of chains oriented along the crystallographic direction [001] with similar structures but differed in the coordination numbers of the cobalt atoms. The Co(1) atom has a coordination number of 5 (trigonal bipyramid), and the coordination number of the Co(2) atom is 6 (octahedron). The nitrate anions are uncoordinated.
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Original Russian Text © E.E. Netreba, E.A. Sarnit, S.V. Shabanov, A.A. Velikozhon, N.V. Somov, 2017, published in Koordinatsionnaya Khimiya, 2017, Vol. 43, No. 2, pp. 85–90.
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Netreba, E.E., Sarnit, E.A., Shabanov, S.V. et al. Coordination polymer 4,4,10,10-tetramethyl-1,3,7,9-tetraazaspiro[5.5]undecane-2,8-dione with cobalt(II) nitrate: Synthesis and molecular structure. Russ J Coord Chem 43, 86–92 (2017). https://doi.org/10.1134/S1070328417020051
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DOI: https://doi.org/10.1134/S1070328417020051