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Not just size and shape : spherically symmetrical d5 and d10 metal ions give different coordination nets with 4,2':6',4"-terpyridines

Constable, Edwin C. and Zhang, Guoqi and Coronado, Eugenio and Housecroft, Catherine E. and Neuburger, Markus. (2010) Not just size and shape : spherically symmetrical d5 and d10 metal ions give different coordination nets with 4,2':6',4"-terpyridines. CrystEngComm, 12 (7). pp. 2139-2145.

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Official URL: http://edoc.unibas.ch/dok/A5841490

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Abstract

Functionalized 4,2′:6′,4″-terpyridine ligands have been used to provide a divergent N,N′-donor set for the formation of coordination polymers containing {Zn2(µ-OAc)4} or {Mn3(µ-OAc)4(OAc)2} scaffolds. Single-stranded coordination polymers are produced from the reactions of 4′-(4-bromophenyl)-4,2′:6′,4″-terpyridine (1) and 4′-(4-methylthiophenyl)-4,2′:6′,4″-terpyridine (2) with Zn(OAc)2·2H2O. In [Zn2(1)(OAc)4]n and [Zn2(2)(OAc)4]n, the two outer nitrogen donors of the 4,2′:6′,4″-terpyridine ligands, bind to the axial sites of {Zn2(µ-OAc)4} units to generate coordination polymer chains which are π-stacked so that the V-shaped ligand domains are interleaved. When Mn(OAc)2·4H2O is treated with 4′-(4-bromophenyl)-4,2′:6′,4″-terpyridine, the triply stranded coordination polymer {[Mn3(1)3(OAc)6]·0.8MeOH·2.2H2O}n assembles in which the 4,2′:6′,4″-terpyridine ligands span between {Mn3(µ-OAc)4(OAc)2} units. Efficient face-to-face π-interactions between pairs of pyridine rings or pairs of bromophenyl rings are the dominant packing forces. The magnetic properties in {[Mn3(1)3(OAc)6]·0.8MeOH·2.2H2O}n are dominated by the presence of a weak antiferromagnetic interaction between the central Mn(II) ion and the two lateral ones within the linear trimeric unit, leading to an S = 5/2 ground state.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Zhang, Guoqi and Neuburger, Markus
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 07:46
Deposited On:14 Sep 2012 06:59

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