[CuII 4] clusters from the self-assembly of two imidazolidinyl 2-phenolate-bridged [CuII 2] units: The role of the chloride bridge

Ranjan Paital Alok, Chang Seop Hong, Chan Kim Hyoung, Debashis Ray

Research output: Contribution to journalArticle

Abstract

A new family of tetracopper clusters [Cu44-X)- L2]ClO4·nH20 (1a-c) [X = Cl, Br, I; n = 12, 2, 2; H3L = 2-(2′-hydroxyphenyl)-1,3-bis[4-(2- hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine] have been synthesised and characterised. The X-ray crystal structure of 1a reveals that the template action of the spherical Cl- anion (μ4-Cl-), which features a unique rectangular planar bridging mode, is responsible for the self-assembly of two [Cu2L]+ units in complex 1a. In this family of complexes the spherical halides serve as templates to assemble the dimeric unit into tetrameric complexes, which gives an insight into the role of the halide bridge in tetranuclear complex formation. The capacity of this bridge to mediate magnetic coupling has been examined by bulk magnetic measurements for complex 1a.

Original languageEnglish
Pages (from-to)1644-1653
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Issue number12
DOIs
Publication statusPublished - 2007 Jul 2

Fingerprint

Self assembly
Chlorides
Imidazolidines
Magnetic couplings
Magnetic variables measurement
Anions
Crystal structure
X rays

Keywords

  • Cluster compounds
  • Copper
  • Magnetic properties
  • Self-assembly
  • Template synthesis

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

[CuII 4] clusters from the self-assembly of two imidazolidinyl 2-phenolate-bridged [CuII 2] units : The role of the chloride bridge. / Alok, Ranjan Paital; Hong, Chang Seop; Hyoung, Chan Kim; Ray, Debashis.

In: European Journal of Inorganic Chemistry, No. 12, 02.07.2007, p. 1644-1653.

Research output: Contribution to journalArticle

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N2 - A new family of tetracopper clusters [Cu4(μ4-X)- L2]ClO4·nH20 (1a-c) [X = Cl, Br, I; n = 12, 2, 2; H3L = 2-(2′-hydroxyphenyl)-1,3-bis[4-(2- hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine] have been synthesised and characterised. The X-ray crystal structure of 1a reveals that the template action of the spherical Cl- anion (μ4-Cl-), which features a unique rectangular planar bridging mode, is responsible for the self-assembly of two [Cu2L]+ units in complex 1a. In this family of complexes the spherical halides serve as templates to assemble the dimeric unit into tetrameric complexes, which gives an insight into the role of the halide bridge in tetranuclear complex formation. The capacity of this bridge to mediate magnetic coupling has been examined by bulk magnetic measurements for complex 1a.

AB - A new family of tetracopper clusters [Cu4(μ4-X)- L2]ClO4·nH20 (1a-c) [X = Cl, Br, I; n = 12, 2, 2; H3L = 2-(2′-hydroxyphenyl)-1,3-bis[4-(2- hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine] have been synthesised and characterised. The X-ray crystal structure of 1a reveals that the template action of the spherical Cl- anion (μ4-Cl-), which features a unique rectangular planar bridging mode, is responsible for the self-assembly of two [Cu2L]+ units in complex 1a. In this family of complexes the spherical halides serve as templates to assemble the dimeric unit into tetrameric complexes, which gives an insight into the role of the halide bridge in tetranuclear complex formation. The capacity of this bridge to mediate magnetic coupling has been examined by bulk magnetic measurements for complex 1a.

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