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4'-(Pyrimidin-5-yl)- and 4'-(2-methylpyrimidin-5-yl)-4,2':6',4''-terpyridines: Selective coordination to zinc(II) through the 4,2':6',4''-terpyridine domain

Klein, Y. M. and Constable, E. C. and Housecroft, C. E. and Zampese, J. A.. (2014) 4'-(Pyrimidin-5-yl)- and 4'-(2-methylpyrimidin-5-yl)-4,2':6',4''-terpyridines: Selective coordination to zinc(II) through the 4,2':6',4''-terpyridine domain. Polyhedron, 81. pp. 98-104.

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Abstract

The preparation and characterization of the compounds 4'-(pyrimidin-5-yl)-4,2':6',4''-terpyridine (3) and 4'-(2-methylpyrimidin-5-yl)-4,2':6',4''-terpyridine (4) are described. Preferential coordination through the terminal pyridine donors of the tpy domain is observed when 3 and 4 are treated with ZnCl2 or ZnI2. The 1-dimensional coordination polymers [{ZnCl2(3)}n], [{ZnI2(3)}n] and [{ZnI2(4)·MeOH}n] have been structurally characterized by single crystal X-ray crystallography. [{ZnI2(3)}n] is helical and crystallizes with both P- and M-helices in the lattice; the packing of P- and M-chains involves discrete tetradecker π-stacking domains involving 4,2′:6′,4″-tpy units. The introduction of the 2-methyl substituent on going from 3 to 4 has only a small effect on the structure of [{ZnI2(L)}n] (L = 3 or 4). The two coordination polymer chains assemble through face-to-face π-interactions into sheets with the pyrimidin-5-yl units projecting outwards. The presence of the 2-methyl substituents in 4 forces the sheets in [{ZnI2(4)·MeOH}n] further apart compared to those in [{ZnI2(3)}n], leading to the accommodation of MeOH molecules in cavities between the sheets.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Zampese, Jennifer Ann and Klein, Maximilian
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier
ISSN:0277-5387
e-ISSN:1873-3719
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:17 Nov 2016 13:30
Deposited On:10 Oct 2014 09:19

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