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Structural diversity in the reactions of 4 '-(pyridyl)-2,2 ':6 ',2 ''-terpyridine ligands and bis{4 '-(4-pyridyl)-2,2 ':6 ',2 ''-terpyridine}iron(II) with copper(II) salts

Beves, Jonathon E. and Constable, Edwin C. and Decurtins, Silvio and Dunphy, Emma L. and Housecroft, Catherine E. and Keene, Tony D. and Neuburger, Markus and Schaffner, Silvia and Zampese, Jennifer A.. (2009) Structural diversity in the reactions of 4 '-(pyridyl)-2,2 ':6 ',2 ''-terpyridine ligands and bis{4 '-(4-pyridyl)-2,2 ':6 ',2 ''-terpyridine}iron(II) with copper(II) salts. CrystEngComm, 11 (11). pp. 2406-2416.

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Official URL: http://edoc.unibas.ch/dok/A5251507

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Abstract

We have demonstrated that treatment of [Fe(1)(2)](2+) (1 = 4'-(4-pyridyl)-2,2':6',2 ''-terpyridine) with an excess of CuCl2 center dot 2H(2)O leads to competition between coordination of copper(II) by the pendant pyridine donors in [Fe(1)(2)](2+), and transfer of ligand 1 from iron(II) to copper(II) to yield [{Cl3Cu(mu-1)Fe(mu-1)}(2)CuCl2(OH2)(2)]Cl-2 center dot 4H(2)O and [Cu(H1)Cl-2]Cl center dot 4H(2)O, respectively. Direct reaction of 1 with CuCl2 center dot 2H(2)O and variation in crystallization conditions results in the formation of either monomeric or polymeric complexes: [Cu(1)Cl-2]center dot 4.75H(2)O, [Cu(1)Cl-2]center dot H2O center dot MeOH and [Cu(1)Cl-2 center dot 2H(2)O](n). The reaction of 1 with Cu(NO3)(2)center dot 3H(2)O gives the coordination polymer [Cu(1)(ONO2)(2)center dot H2O](n). Magnetic data for [Cu(1)Cl-2 center dot 2H(2)O](n) and [Cu(1)(ONO2)(2)center dot H2O](n) are consistent with antiferromagnetically- coupled chains. Reactions of CuCl2 center dot 2H(2)O with ligands 2 and 3 (2 = 4'-(3-pyridyl)-2,2':6',2 ''-terpyridine, 3 = 4'-(2-pyridyl)-2,2':6',2 ''-terpyridine) lead to monomeric complexes. With the exception of [Cu(3)Cl-2], the mononuclear complexes show a propensity for the incorporation of water into their crystal lattices; in the case of [Cu(H1)Cl-2]Cl center dot 4H(2)O and [Cu(H1)Cl-2]Cl center dot 4.75H(2)O, the small change in water content leads to the assembly of (5.8(2))(2)(5.6.8)(4)(5(2).6)(2) or (4(2).6(2))(3)(4.6(2))(6) water-chloride ion nets.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
UniBasel Contributors:Constable, Edwin Charles and Housecroft, Catherine Elizabeth and Dunphy, Emma and Neuburger, Markus and Zampese, Jennifer Ann
Item Type:Article, refereed
Publisher:Royal Society of Chemistry
e-ISSN:1466-8033
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:08 May 2017 08:57
Deposited On:22 Mar 2012 14:07

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