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Minyaev ME, Vinogradov AA, Roitershtein DM, et al. Di- and triphenylacetate complexes of yttrium and europium. Acta Crystallogr C Struct Chem. 2016;72:578-84doi: 10.1107/S2053229616009748.
Minyaev, M. E., Vinogradov, A. A., Roitershtein, D. M., Lyssenko, K. A., Ananyev, I. V., & Nifant'ev, I. E. (2016). Di- and triphenylacetate complexes of yttrium and europium. Acta crystallographica. Section C, Structural chemistry, 72578-84. https://doi.org/10.1107/S2053229616009748
Minyaev, Mikhail E, et al. "Di- and triphenylacetate complexes of yttrium and europium." Acta crystallographica. Section C, Structural chemistry vol. 72 (2016): 578-84. doi: https://doi.org/10.1107/S2053229616009748
Minyaev ME, Vinogradov AA, Roitershtein DM, Lyssenko KA, Ananyev IV, Nifant'ev IE. Di- and triphenylacetate complexes of yttrium and europium. Acta Crystallogr C Struct Chem. 2016 Jul 01;72:578-84. doi: 10.1107/S2053229616009748. Epub 2016 Jun 23. PMID: 27377281.
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Acta Crystallogr C Struct Chem. 2016 Jul 01;72:578-84. doi: 10.1107/S2053229616009748. Epub 2016 Jun 23.

Di- and triphenylacetate complexes of yttrium and europium.

Acta crystallographica. Section C, Structural chemistry

Mikhail E Minyaev, Alexandr A Vinogradov, Dmitrii M Roitershtein, Konstantin A Lyssenko, Ivan V Ananyev, Ilya E Nifant'ev

Affiliations

  1. A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky prospect, Moscow 119991, Russian Federation.
  2. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Str., Moscow 117813, Russian Federation.

PMID: 27377281 DOI: 10.1107/S2053229616009748

Abstract

The significant variety in the crystal structures of rare-earth carboxylate complexes is due to both the large coordination numbers of the rare-earth cations and the ability of the carboxylate anions to form several types of bridges between rare-earth metal atoms. Therefore, these complexes are represented by mono-, di- and polynuclear complexes, and by coordination polymers. The interaction of LnCl3(thf)x (Ln = Eu or Y; thf is tetrahydrofuran) with sodium or diethylammonium diphenylacetate in methanol followed by recrystallization from a DME/THF/hexane solvent mixture (DME is 1,2-dimethoxyethane) leads to crystals of the non-isomorphic dinuclear complexes tetrakis(μ-2,2-diphenylacetato)-κ(4)O:O';κ(3)O,O':O';κ(3)O:O,O'-bis[(1,2-dimethoxyethane-κ(2)O,O')(2,2-diphenylacetato-κ(2)O,O')europium(III)], [Eu(C14H11O2)6(C4H10O2)2], (I), and tetrakis(μ-2,2-diphenylacetato)-κ(4)O:O';κ(3)O,O':O';κ(3)O:O,O'-bis[(1,2-dimethoxyethane-κ(2)O,O')(2,2-diphenylacetato-κ(2)O,O')yttrium(III)], [Y(C14H11O2)6(C4H10O2)2], (II), possessing monoclinic (P21/c) symmetry. The [Ln(Ph2CHCOO)3(dme)]2 molecule (Ln = Eu or Y) lies on an inversion centre and exhibits three different coordination modes of the diphenylacetate ligands, namely bidentate κ(2)O,O'-terminal, bidentate μ2-κ(1)O:κ(1)O'-bridging and tridentate μ2-κ(1)O:κ(2)O,O'-semibridging. The terminal and bridging ligands in (I) are disordered over two positions, with an occupancy ratio of 0.806 (2):0.194 (2). The interaction of EuCl3(thf)2 with Na[Ph3CCOO] in methanol followed by crystallization from hot methanol produces crystals of tetrakis(methanol-κO)tris(2,2,2-triphenylacetato)-κ(4)O:O';κO-europium(III) methanol disolvate, [Eu(C19H15O2)3(CH3OH)4]·2CH3OH, (III)·2MeOH, with triclinic (P-1) symmetry. The molecule of (III) contains two O,O'-bidentate and one O-monodentate terminal triphenylacetate ligand. (III)·2MeOH possesses one intramolecular and four intermolecular hydrogen bonds, forming a [(III)·2MeOH]2 dimer with two bridging methanol molecules.

Keywords: crystal structure; diphenylacetate; europium; hydrogen bonding; molecular complex; rare-earth carboxylates; triphenylacetate; yttrium

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