Synthesis and crystal structure of [Na(H2O)4][EuL4] · 0.775CH2Cl2 (HL = 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedione)

Autor: I. N. Polyakova, I. V. Taydakov, B. E. Zaitsev, S. S. Krasnosel’sky, V. S. Sergienko
Rok vydání: 2011
Předmět:
Zdroj: Russian Journal of Inorganic Chemistry. 56:345-349
ISSN: 1531-8613
0036-0236
Popis: [Na(H2O)4][EuL4] · 0.775CH2Cl2 (I) has been synthesized by the reaction of Eu(NO3)3 · 6H2O with 1,3-bis(1,3-dimethyl-1H-pyrasol-4-yl)-1,3-propanedione (HL) in the presence of NaOH. Its crystal structure has been solved by X-ray diffraction analysis. Crystals are tetragonal; a = 16.2401(5) A, c = 11.9113(4) A, V= 3141.50(17) A3, ρcalcd = 1.427 g/cm3, μ(MoKα) = 1.140 mm−1, space group P4/n, Z = 2. The structural units forming a crystal of compound I are [EuL4]− complex anions, [Na(H2O)4]+ cations, and CH2Cl2 molecules. The coordination polyhedron of the Eu atom is an Archimedean antiprism formed by the O atoms of four bidentate chelate ligands L−.
Databáze: OpenAIRE
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