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Coordination polymers with 4′-(4-(anthracen-9-yl)phenyl)- and 4′-(4-(naphthalen-1-yl)phenyl)-4,2′:6′,4″-terpyridines: Mono-, di- and heptazinc(II) nodes

Constable, E. C. and Housecroft, C. E. and Neuburger, M. and Schönle, J. and Vujovic, S. and Zampese, J. A.. (2013) Coordination polymers with 4′-(4-(anthracen-9-yl)phenyl)- and 4′-(4-(naphthalen-1-yl)phenyl)-4,2′:6′,4″-terpyridines: Mono-, di- and heptazinc(II) nodes. Polyhedron, 62. pp. 260-267.

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Official URL: http://edoc.unibas.ch/dok/A6165182

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Abstract

Reactions of 4′-(4-(anthracen-9-yl)phenyl)-4,2′:6′,4″-terpyridine (2) with zinc(II) acetate lead to helical one-dimensional polymers [{Zn(OAc)2(2)}n] which crystallize either as racemates or the homochiral polymer containing mononuclear {Zn(OAc)2} nodes linked by divergent 4,2′:6′,4″-terpyridine ligands. In contrast, when 4′-(4-(naphthalen-1-yl)phenyl)-4,2′:6′,4″-terpyridine (3) reacts with zinc(II) acetate, a one-dimensional coordination polymer [{Zn2(μ-OAc)4(3)}n] in which the metal nodes are dinuclear {Zn2(μ-OAc)4} units is formed. This mimics the assembly formed when the ligand is 4′-(4-biphenylyl)-4,2′:6′,4″-terpyridine (1). In addition, crystals of [{Zn7(μ-OAc)10(μ4-O)2(3)}n] were isolated and structural determination reveals a one-dimensional coordination polymer in which each ligand 3 bridges between {Zn7(μ-OAc)10(μ4-O)2} clusters. Ligands 2 and 3 are both emissive in solution and in the solid state. The emission spectra of ethanol solutions of [{Zn(OAc)2(2)}n] and [{Zn2(μ-OAc)4(3)}n] are consistent with dissociation of the complexes, the emission maxima mimicking those of the free ligands. The emission of 2 in the solid state is essentially quenched upon complexation with zinc(II) acetate, whereas on going from 3 to [{Zn2(μ-OAc)4(3)}n], a red-shift is observed (416 to 434 nm) without change in the quantum yield (ca. 1.6%).
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Zampese, Jennifer Ann and Vujovic, Srboljub and Schönle, Jonas and Neuburger, Markus
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0277-5387
e-ISSN:1873-3719
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:03 May 2017 13:44
Deposited On:13 Sep 2013 07:52

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