Bis(N-ethylethylenediamine-κ2N,N′)copper(II) -hexacyanocobaltate(III)-water (3/2/4): A two-dimensional ladder structure of a bimetallic assembly

Takashiro Akitsu, Yasuaki Einaga

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The title compound, poly[[tetracyano-octa-μ-cyano-hexakis-(N- ethylethylenediamine)tricopper(II)dicobaltate(III)] tetrahydrate], [Cu(C 4H12N2)2]3[Co(CN) 6]2·4H2O or {[Cu3Co 2-(CN)12(C4H12N2) 6]·4H2O}n, was crystallized from an aqueous reaction mixture containing Cu(ClO4)2, N-ethylethylenediamine and K3[Co(CN)6] in a self-assembling process. The polymeric chains are extended through -Co III-CN-CuII-linkages involving four or two cyanide ligands of the centrosymmetric [Co(CN)6]3- complex ions, forming a two-dimensional ladder structure. The CuII atoms, one of which also lies on an inversion centre, have a distorted octahedral coordination geometry, the degree of tetragonal Jahn-Teller distortion being T = 0.785 and 0.810 (T is the ratio of mean inplane Cu - N bond lengths to axial Cu - N bond lengths). This local Jahn-Teller distortion results from the anisotropic features of this two-dimensional cyano-bridged structure.

Original languageEnglish
JournalActa Crystallographica Section E: Structure Reports Online
Volume62
Issue number4
DOIs
Publication statusPublished - 2006 Apr 1

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Jahn-Teller effect
Ladders
Cyanides
Bond length
ladders
Copper
assembly
Ions
Ligands
copper
Water
cyanides
assembling
linkages
water
inversions
Atoms
ligands
Geometry
geometry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Structural Biology

Cite this

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title = "Bis(N-ethylethylenediamine-κ2N,N′)copper(II) -hexacyanocobaltate(III)-water (3/2/4): A two-dimensional ladder structure of a bimetallic assembly",
abstract = "The title compound, poly[[tetracyano-octa-μ-cyano-hexakis-(N- ethylethylenediamine)tricopper(II)dicobaltate(III)] tetrahydrate], [Cu(C 4H12N2)2]3[Co(CN) 6]2·4H2O or {[Cu3Co 2-(CN)12(C4H12N2) 6]·4H2O}n, was crystallized from an aqueous reaction mixture containing Cu(ClO4)2, N-ethylethylenediamine and K3[Co(CN)6] in a self-assembling process. The polymeric chains are extended through -Co III-CN-CuII-linkages involving four or two cyanide ligands of the centrosymmetric [Co(CN)6]3- complex ions, forming a two-dimensional ladder structure. The CuII atoms, one of which also lies on an inversion centre, have a distorted octahedral coordination geometry, the degree of tetragonal Jahn-Teller distortion being T = 0.785 and 0.810 (T is the ratio of mean inplane Cu - N bond lengths to axial Cu - N bond lengths). This local Jahn-Teller distortion results from the anisotropic features of this two-dimensional cyano-bridged structure.",
author = "Takashiro Akitsu and Yasuaki Einaga",
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T1 - Bis(N-ethylethylenediamine-κ2N,N′)copper(II) -hexacyanocobaltate(III)-water (3/2/4)

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N2 - The title compound, poly[[tetracyano-octa-μ-cyano-hexakis-(N- ethylethylenediamine)tricopper(II)dicobaltate(III)] tetrahydrate], [Cu(C 4H12N2)2]3[Co(CN) 6]2·4H2O or {[Cu3Co 2-(CN)12(C4H12N2) 6]·4H2O}n, was crystallized from an aqueous reaction mixture containing Cu(ClO4)2, N-ethylethylenediamine and K3[Co(CN)6] in a self-assembling process. The polymeric chains are extended through -Co III-CN-CuII-linkages involving four or two cyanide ligands of the centrosymmetric [Co(CN)6]3- complex ions, forming a two-dimensional ladder structure. The CuII atoms, one of which also lies on an inversion centre, have a distorted octahedral coordination geometry, the degree of tetragonal Jahn-Teller distortion being T = 0.785 and 0.810 (T is the ratio of mean inplane Cu - N bond lengths to axial Cu - N bond lengths). This local Jahn-Teller distortion results from the anisotropic features of this two-dimensional cyano-bridged structure.

AB - The title compound, poly[[tetracyano-octa-μ-cyano-hexakis-(N- ethylethylenediamine)tricopper(II)dicobaltate(III)] tetrahydrate], [Cu(C 4H12N2)2]3[Co(CN) 6]2·4H2O or {[Cu3Co 2-(CN)12(C4H12N2) 6]·4H2O}n, was crystallized from an aqueous reaction mixture containing Cu(ClO4)2, N-ethylethylenediamine and K3[Co(CN)6] in a self-assembling process. The polymeric chains are extended through -Co III-CN-CuII-linkages involving four or two cyanide ligands of the centrosymmetric [Co(CN)6]3- complex ions, forming a two-dimensional ladder structure. The CuII atoms, one of which also lies on an inversion centre, have a distorted octahedral coordination geometry, the degree of tetragonal Jahn-Teller distortion being T = 0.785 and 0.810 (T is the ratio of mean inplane Cu - N bond lengths to axial Cu - N bond lengths). This local Jahn-Teller distortion results from the anisotropic features of this two-dimensional cyano-bridged structure.

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