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Coordination molecular compounds of cadmium(II) iodide with dimethylpyridines

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Abstract

The reactions of CdI2 with dimethylpyridines (Me2Py is C7H9N) afford complexes CdI2(2,3-Me2Py)2] (I), [CdI2(2,6-Me2Py) (II), and CdI2(3,5-Me2Py)2 (III). The structures of compounds I and II are determined. The crystals of complex I are orthorhombic, space group Pbca, a = 7.930(1) Å, b = 15.537(1) Å, c = 29.943(1) Å, V = 3689.1(5) Å3, ρcalcd = 2.090 g/cm3, Z = 8. The crystals of complex II are monoclinic, space group C2/c, a = 14.784(1), b = 11.991(1), c = 17.711(1) Å, β = 90.39(1)°, V = 1081.1(2) Å3, ρcalcd = 2.908 g/cm3, Z = 4. The structure of compound I is built of discrete neutral complexes [CdI2(2,3-Me2Py)2]. The Cd polyhedron is a distorted tetrahedron (Cd-I 2.289–2.295, Cd-N 2.708–2.734 Å, angles N(I)CdN(I) 103.1°-114.8°). Polymer chains [CdI2(2,6-Me2Py)]∞ extended along the direction [100] are observed due to the bridging iodine atoms in structure II. The Cd polyhedron is a trigonal bipyramid containing iodine atoms at the axial vertices (Cd-Iaks 3.040 Å) and two iodine atoms and the nitrogen atom of the Me2Py ligand in the equatorial plane Me2Py (Cd-Ieq 2.840 Å, Cd-N 2.309 Å). The compounds in the solid state are photoluminescent.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    Yu. V. Kokunov, V. V. Kovalev, G. A. Razgonyaeva, Yu. E. Gorbunova & S. A. Kozyukhin

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  1. Yu. V. Kokunov
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  2. V. V. Kovalev
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  3. G. A. Razgonyaeva
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  4. Yu. E. Gorbunova
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  5. S. A. Kozyukhin
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Correspondence to Yu. V. Kokunov.

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Original Russian Text © Yu.V. Kokunov, V.V. Kovalev, G.A. Razgonyaeva, Yu.E. Gorbunova, S.A. Kozyukhin, 2014, published in Koordinatsionnaya Khimiya, 2014, Vol. 40, No. 6, pp. 346–350.

To the 80th anniversary of the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

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Kokunov, Y.V., Kovalev, V.V., Razgonyaeva, G.A. et al. Coordination molecular compounds of cadmium(II) iodide with dimethylpyridines. Russ J Coord Chem 40, 366–370 (2014). https://doi.org/10.1134/S1070328414060025

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  • DOI: https://doi.org/10.1134/S1070328414060025

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