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Issue 45, 2010
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Cu(I) complexes based on cis, cis-1,3,5-tris(arylideneamino)cyclohexane ligands: synthesis, structure and CO binding

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Abstract

A new series of sterically bulky, facially coordinating N3-donor tach-based ligands (tach; cis,cis-1,3,5-triaminocyclohexane) [2.1; cis,cis-1,3,5-tris(2,4-dimethylbenzylideneamino)cyclohexane, 4.1; cis,cis-1,3,5-tris(pentamethylbenzylideneamino)cyclohexane, 5.1; cis,cis-1,3,5-tris(2,6-dimethoxybenzylideneamino)cyclohexane, 6.1; cis,cis-1,3,5-tris(pentafluorobenzylideneamino)cyclohexane, 7.1; cis,cis-1,3,5-tris(3,5-bis(ditrifluoromethyl)benzylideneamino)cyclohexane, 8.1; cis,cis-1,3,5-tris(2-trifluoromethylbenzylideneamino)cyclohexane, 9.1; cis,cis-1,3,5-tris(2-methoxybenzylideneamino)cyclohexane] have been obtained from the condensation of tach with three equivalents of the appropriate substituted benzaldehyde. Reaction with [Cu(NCCH3)4]PF6 gives Cu(I) complexes of tach-based ligands {2.2–9.2, eg; 2.2; [Cu(2.1)(NCCH3)]PF6}. Displacement of the acetonitrile ligand by CO was achieved successfully for all the Cu(I) complexes of tach-based ligands and the resulting complexes have been shown to bind carbon monoxide {2.3–9.3, eg; 2.3; [Cu(2.1)(CO)]PF6}. The X-ray single crystal structures of 5.1, 8.1, 9.1, 3.2, 7.2, 8.2, 9.2, 3.3, 5.3 and 6.3 have been determined.

Graphical abstract: Cu(i) complexes based on cis, cis-1,3,5-tris(arylideneamino)cyclohexane ligands: synthesis, structure and CO binding

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Publication details

The article was received on 09 Aug 2010, accepted on 06 Sep 2010 and first published on 21 Oct 2010


Article type: Paper
DOI: 10.1039/C0DT00986E
Citation: Dalton Trans., 2010,39, 10910-10919
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    Cu(I) complexes based on cis, cis-1,3,5-tris(arylideneamino)cyclohexane ligands: synthesis, structure and CO binding

    P. Ebrahimpour, M. Cushion, M. F. Haddow, A. J. Hallett and D. F. Wass, Dalton Trans., 2010, 39, 10910
    DOI: 10.1039/C0DT00986E

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