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RESEARCH FRONT
Contents Vol 63(4)

Pb···π Aryl Interactions as Supramolecular Synthons

Edward R. T. Tiekink A B D and Julio Zukerman-Schpector C D
+ Author Affiliations
- Author Affiliations

A School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore.

B Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.

C Universidade Federal de São Carlos, Laboratório de Cristalografia, Estereodinâmica e Modelagem Molecular, Departamento de Química, C.P. 676, São Carlos, São Paulo, 13565-905, Brazil.

D Corresponding authors. Email: edward.tiekink@gmail.com; julio@power.ufscar.br

Australian Journal of Chemistry 63(4) 535-543 https://doi.org/10.1071/CH09466
Submitted: 2 September 2009  Accepted: 10 October 2009   Published: 8 April 2010

Abstract

A survey of lead (Pb) structures containing Pb···π aryl interactions has been conducted. Such contacts usually lead to zero- or one-dimensional aggregates with rare examples of two- and three-dimensional architectures. The Pb···π aryl interactions are found only in crystal structures containing lead(ii) centres and arise as a result of electron donation of the lead-bound lone pair of electrons to the lowest unoccupied molecular orbital of the accepting aryl ring. The prevalence of Pb···π interactions as a supramolecular synthon is relatively low, occurring in ~3% of all structures containing lead and at least one aryl ring, but these are more likely to form compared with Sn···π interactions.


Acknowledgements

We thank CNPq, CAPES and FAPESP (Brazil) for support of this work.


References


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