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Synthesis and structural characterization of [H2(diaza-18-crown-6)][CuCI4]·H2O

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Abstract

A protonated diaza-18-crown-6 copper(II) chloride complex was crystallized from a mixture of YCl3, BaCl2, and Cu(C2H3O2)2 in 3:1 CH3OH/CH3CN. [H2(diaza-18-crown-6)][CuC4]·H2O crystallizes_in the centric space group, P1 with: a = 7.429(2) Å, b = 10.099(3) Å, c = 14.779(9) Å, α = 83.76(5)°, β = 81.70(3)°, γ = 75.59(3)°, and Dcalc = 1.53 g/cm3 for Z = 2. The [CuC4]-2 anion is a distorted tetrahedron and is hydrogen-bonded to two unique diazacrown molecules. The bonding results in zig-zag contacts that form a polymeric network diagonally oriented in the bc plane. One of the two unique azacrown molecules maintains a slightly distorted D3d conformation stabilized by hydrogen bonding from a disordered water molecule and to the [CuC4]-2 anion. The hydrogen bonding of the disordered water molecule bridges one form of the protonated macrocycle and forms polymeric chains along the a direction. The other unique azacrown molecule adopts a distorted C2 configuration and has no interactions with the water molecule.

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Authors and Affiliations

  1. Argonne National Laboratory, Chemical Technology Division, Argonne, Illinois, 60439, USA

    Luis Nuñez

  2. Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama, 35487, USA

    Robin D. Rogers

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  1. Luis Nuñez
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  2. Robin D. Rogers
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Nuñez, L., Rogers, R.D. Synthesis and structural characterization of [H2(diaza-18-crown-6)][CuCI4]·H2O. J Chem Crystallogr 27, 5–10 (1997). https://doi.org/10.1007/BF03543081

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  • DOI: https://doi.org/10.1007/BF03543081

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