STRUCTURE OF MIXED-LIGAND MAGNESIUM DIPIVALOYLMETHANATE COMPLEXES WITH PROPYLENEDIAMINE AND ITS DERIVATIVE Full article
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Journal of Structural Chemistry
ISSN: 1573-8779 , E-ISSN: 0022-4766 |
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Output data | Year: 2020, Volume: 61, Number: 9, Pages: 1405-1413 Pages count : 9 DOI: 10.1134/s0022476620090073 | ||||
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Abstract:
The structures of two mixed-ligand [Mg(Q)(thd)2] complexes (thd = 2,2,6,6-tetramethylheptane-3,5-dionate ion (dipivaloylmethanate ion), Q = propane-1,3-diamine (pda), N,N,N′,N′-tetramethylpropane-1,3-diamine (tmpda)) are determined by X-ray crystallography. The structure of the complex with tmpda is determined at 296 K, that of the complex with pda is determined at 296 K and 150 K. Crystallographic data (296 K) for [Mg(pda)(thd)2] I are: space group P , a = 9.6363(3) Å, b = 12.1063(4) Å, c = 14.3401(5) Å, α = 70.6430(10)°, β = 72.7680(10)°, γ = 89.376(2)°, V = 1500.41(9) Å3, Z = 2. Crystallographic data for [Mg(tmpda)(thd)2] II are: space group С2/с, a = 10.3716(3) Å, b = 17.3614(4) Å, c = 19.1577(5) Å, β = 90.8480(10)°, V = 3449.26(16) Å3, Z = 6. Crystal packings are formed by mononuclear molecules that are organized in dimers by N–H…O hydrogen bonds in the structure of I. Magnesium atoms have a distorted octahedral coordination environment. In I and II molecules, Mg–O bond lengths are comparable and vary in ranges 2.027-2.062 Å and 2.023-2.030 Å respectively; OMgO chelate angles are close to 86°. In complex II, Mg–N bond lengths and the NMgN angle are remarkably larger than those in I: 2.331 vs. 2.193-2.229 Å; 89.6 vs. 84.7°. A comparative analysis of molecular structures and crystal packings of related [Mg(Q)(thd)2] complexes with diamines of propylene and ethylene series is carried out.
Cite:
Vikulova E.S.
, Rikhter E.A.
, Piryazev D.A.
, Zherikova K.V.
, Morozova N.B.
STRUCTURE OF MIXED-LIGAND MAGNESIUM DIPIVALOYLMETHANATE COMPLEXES WITH PROPYLENEDIAMINE AND ITS DERIVATIVE
Journal of Structural Chemistry. 2020. V.61. N9. P.1405-1413. DOI: 10.1134/s0022476620090073 Scopus OpenAlex
STRUCTURE OF MIXED-LIGAND MAGNESIUM DIPIVALOYLMETHANATE COMPLEXES WITH PROPYLENEDIAMINE AND ITS DERIVATIVE
Journal of Structural Chemistry. 2020. V.61. N9. P.1405-1413. DOI: 10.1134/s0022476620090073 Scopus OpenAlex
Identifiers:
Scopus: | 2-s2.0-85092574074 |
OpenAlex: | W3092889326 |
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OpenAlex | 1 |