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Crystal structures of copper(II) complexes with methyliminodiacetate ions and 1,10-phenanthroline or imidazole [Cu(Phen)H2O][Cu(Mida)2]·2H2O and [Cu(Mida)Im]

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Abstract

Methyliminodiacetic acid (H2Mida) and imidazole react with copper(II) to form crystals of the square pyramidal complex [Cu(Mida)Im]. One N and two O atoms of the Mida ligand (Cu-N 2.010(1) Å, Cu-O 1.955(1) Å, and 1.978(1) Å) and the imidazole N atom (1.950(1) Å) lie at the base of the pyramid. The carboxyl O atom of the neighboring complex lies at the apical position (2.411(1) Å); in this way the individual complexes are linked into infinite zigzag chains. Substitution of imidazole by 1,10-phenanthroline gave [Cu2(Mida)2(Phen)H2O]·2H2O crystals with two nonequivalent centrosymmetric octahedral anions [Cu(Mida)2]2− of face type (Cu-N 2.023 Å and 2.028(2) Å, Cu-Oax 2.579 Å and 2.530(2) Å, Cu-Obas 1.952 Å and 1.936(2) Å). The anions serve as bridges in chains between the [Cu(Phen)H2O]2+ cation fragments to which they are bonded by their axial carboxyl groups. The Cu atom of the cation has a [4+1] environment (with the H2O molecule lying on the axis of the pyramid, and with two N atoms of the ligand and two O atoms of the anions lying at the base).

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, University of Regensburg, Germany

    M. Zabel

  2. Institute of Molecular and Atomic Physics, National Academy of Sciences, Minsk, Belarus

    A. L. Poznyak & V. I. Pawlowski

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  1. M. Zabel
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  2. A. L. Poznyak
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  3. V. I. Pawlowski
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Original Russian Text Copyright © 2005 by M. Zabel, A. L. Poznyak, and V. I. Pawlowski

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Translated from Zhurnal Strukturnoi Khimii, Vol. 46, No. 3, pp. 564–568, May–June, 2005.

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Zabel, M., Poznyak, A.L. & Pawlowski, V.I. Crystal structures of copper(II) complexes with methyliminodiacetate ions and 1,10-phenanthroline or imidazole [Cu(Phen)H2O][Cu(Mida)2]·2H2O and [Cu(Mida)Im]. J Struct Chem 46, 551–555 (2005). https://doi.org/10.1007/s10947-006-0138-6

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  • DOI: https://doi.org/10.1007/s10947-006-0138-6

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