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Crystal structure of two complexes containing tris-(β-diketonato)magnate anion

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Abstract

Single crystal XRD is used to determine the structures of the complexes (H2TMEDA)[Mg(ptac)3]2 (1, TMEDA = Me2N(CH2)2NMe2, ptac = tBuCOCHCOCF3) and (H2TMEDA)[Mg(hfac)3](hfac) (2, hfac = CF3COCHCOCF3) at a temperature of 150 K. The crystallographic data for complex 1: a = 10.2919(3) Å, b = 10.9492(4) Å, c = 15.4159(6) Å, α = 87.117(1)°, β = 89.686(1)°, γ = 79,864(1)°, space group \(P\bar 1\) Z = 1, R = 0.0573; for complex 2: a = 12.9446(2) Å, b = 23.0035(4) Å, c = 13.1473(3) Å, β = 98.779(1)°, space group P21/n, Z = 4, R = 0.0605. The structures are ionic; the metal atom coordinates six oxygen atoms of three β-diketonate ligands. The distances Mg-O in complex 1 are in the range 2.036(2)–2.0920(19) Å; the same distances in complex 2 are in the range 2.051(2)–2.076(2) Å. The spatial packing is determined by the system of hydrogen bonds between the (H2TMEDA)2+ cations and [Mg(ptac)3] (1) or hfac (2) anions. A thermogravimetric study of complex 1 is carried out.

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Correspondence to E. S. Vikulova.

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Original Russian Text Copyright © 2013 by E. S. Vikulova, D. A. Piryazev, K. V. Zherikova, N. I. Alferova, N. B. Morozova, I. K. Igumenov

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Translated from Zhurnal Strukturnoi Khimii, Vol. 54, No. 5, pp. 845–851, September–October, 2013.

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Vikulova, E.S., Piryazev, D.A., Zherikova, K.V. et al. Crystal structure of two complexes containing tris-(β-diketonato)magnate anion. J Struct Chem 54, 883–889 (2013). https://doi.org/10.1134/S0022476613050077

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  • DOI: https://doi.org/10.1134/S0022476613050077

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