When five are six : the myth of five-coordinate copper(II) in supramolecular chemistry

Constable, Edwin C. and Housecroft, Catherine E. and Price, Jason R. and Zampese, Jennifer Ann. (2010) When five are six : the myth of five-coordinate copper(II) in supramolecular chemistry. CrystEngComm, 12 (10). pp. 3163-3171.

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Official URL: http://edoc.unibas.ch/dok/A5841501

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We have made a systematic investigation of {Cu(tpy)(bpy)} and {Cu(tpy)(phen)} complexes by determining the single crystal structures of [Cu(bpy)(tpy)][PF6]2, 4{[Cu(6-Mebpy)(tpy)][PF6]2}·Et2O·3H2O, [Cu(6,6′-Me2bpy)(tpy)][PF6]2·MeCN, [Cu(2,9-Me2phen)(tpy)][PF6]2, 2{[Cu(6-Phbpy)(tpy)][PF6]2}·2MeNO2·H2O, [Cu(6,6′-Ph2bpy)(tpy)][PF6]2 and 2{[(6,6′-Me2bpy)Cu(µ-tpySStpy)Cu(6,6′-Me2bpy)][PF6]4}·1.5MeCN·3H2O (bpy = 2,2′-bipyridine, 6-Mebpy = 6-methyl-2,2′-bipyridine, 6,6′-Me2bpy = 6,6′-dimethyl-2,2′-bipyridine, 2,9-Me2phen = 2,9-dimethyl-1,10-phenanthroline, 6-Phbpy = 6-phenyl-2,2′-bipyridine, 6,6′-Ph2bpy = 6,6′-diphenyl-2,2′-bipyridine, tpy = 2,2′:6′,2″-terpyridine, tpySStpy = 1,2-bis(2,2′:6′,2″-terpyridin-4′-yl)disulfide). Among these copper(II) complexes, only one possesses a true trigonal bipyramidal coordination environment and this is crystallographically imposed. A comparison is made between these newly determined structures and the seven related {Cu(tpy)(bpy)} and {Cu(tpy)(phen)} structures available in the Cambridge Structural Database. The bulk of these “five-coordinate” complexes exhibiting ostensibly square-based pyramidal geometries also show an additional interaction in the remaining axial site leading to a better description as their being six-coordinate.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Former Organization Units Chemistry > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Price, Jason Roy and Zampese, Jennifer Ann
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:08 May 2017 07:34
Deposited On:14 Sep 2012 06:53

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