Three crystal forms of tetrakis(μ2-2-nitrobenzoato-O, O′)-diaqua-di-copper(II)

Zvicka Deutsch, Janice M. Rubin-Preminger, Joel Bernstein, James Y. Becker

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Two previously unrecognized concomitant polymorphic structures of the copper complex tetrakis(μ2-o-nitrobenzoato-O,O′)-diaqua- copper(II) 1-Cu2(2-NO2C6H4COO) 4(H2O)2 are reported. These two structures have been solved and there is substantial evidence of a nonaquo structure Cu 2(2-NO2C6H4COO)4 that precipitated from the same aqueous solution. Diaquo form 1 crystallizes as emerald green prisms of varying sizes and is the thermodynamically stable form. Crystal data: Mr = 827.56, monoclinic, a = 7.534(2), b = 13.411(4), c = 15.404(4) Å, β = 97.101(5)°, V = 1544.5(7) Å3, T = 295(2) K, space group P21/n, Z = 2, μ = 1.47 mm-1, Dx = 1.780 Mg m-3, λ(Mo Kα) = 0.71073 Å, F(000) = 836, final R[int] = 0.0397 for 3725 reflections used in the refinement. Diaquo form 2 crystallizes in two habits, plates and diamondoids, and is the kinetically stable form. The crystals are usually thinner and consequently lighter shaded than form 1. Crystal data: Mr = 827.56, monoclinic, a = 26.561(3), b = 7.4708(9), c = 16.652(2) Å, β = 106.510(3)°, V = 3168.1(6) Å3, T = 293(2) K, space group P21/c, Z = 4, μ = 1.434 mm-1, D x = 1.735 Mg m-3, λ(Mo Kα) = 0.71073 Å, F(000) = 1672, final R[int] = 0.0539 for 7828 reflections used in the refinement.

Original languageEnglish
Pages (from-to)41-50
Number of pages10
JournalCrystEngComm
Volume8
Issue number1
DOIs
StatePublished - 17 Mar 2006

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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