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Heteroligand Molecular “Stirrups” Using Conformationally Flexible Ditopic Pyridyl−Pyrazolyl Ligands

Lu, Jinzhen, Turner, David R., Harding, Lindsay P. and Batten, Stuart R. (2009) Heteroligand Molecular “Stirrups” Using Conformationally Flexible Ditopic Pyridyl−Pyrazolyl Ligands. Inorganic Chemistry, 48 (16). pp. 7525-7527. ISSN 00201669

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Abstract

Heteroligand molecular “stirrups” form by the self-assembly of flexible ditopic ligands in combination with 4,4′-bipyridine and [(dppp)Pd)]2+. Crystallographic analysis shows that the ligands, bis[3-(4-pyridyl)pyrazolyl]-m-xylene (mXy4py3pz) and bis[4-(4-pyridyl)pyrazolyl]-p-xylene (pXy4py4pz) form complexes of the type [{(dppp)Pd}2(4,4′-bipy)(L)]·4OTf (1·4OTf and 2·4OTf, respectively) in the solid state, with remarkably similar structures considering the differences in substitution patterns between the two ligands. The self-assembly of both 14+ and 24+ is assisted by face-to-face π interactions on the exterior of the macrocycle between the phenyl rings of the dppp ligands and the pyridyl groups of the ditopic ligands.

Item Type: Article
Subjects: Q Science > QD Chemistry
Schools: School of Applied Sciences
School of Applied Sciences > Materials and Catalysis Research Centre
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Depositing User: Graham Stone
Date Deposited: 26 Aug 2009 16:44
Last Modified: 26 Aug 2009 16:44
URI: http://eprints.hud.ac.uk/id/eprint/5477

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