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- Title
Crystal structure of two complexes containing <i>tris</i>-(β-diketonato)magnate anion.
- Authors
Vikulova, E. S.; Piryazev, D. A.; Zherikova, K. V.; Alferova, N. I.; Morozova, N. B.; Igumenov, I. K.
- Abstract
Single crystal XRD is used to determine the structures of the complexes (H 2TMEDA)[Mg(ptac) 3] 2 ( 1, TMEDA = Me 2N(CH 2) 2NMe 2, ptac = tBuCOCHCOCF 3) and (H 2TMEDA)[Mg(hfac) 3](hfac) ( 2, hfac = CF 3COCHCOCF 3) 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 P2 1/ 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 (H 2TMEDA) 2+ cations and [Mg(ptac) 3] −(1) or hfac −(2) anions. A thermogravimetric study of complex 1 is carried out.
- Subjects
CRYSTAL structure; ANIONS; COMPLEX compounds; X-ray diffraction; SINGLE crystals; THERMOGRAVIMETRY
- Publication
Journal of Structural Chemistry, 2013, Vol 54, Issue 5, p883
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S0022476613050077