Supramolecular associations peculiar to coordination complexes
In order to achieve the ultimate goal of crystal engineering, the deliberate and rational design of the molecular packing in crystals, a thorough understanding of the way molecules self-assemble in the condensed phase is required. A particular favourite mode of assembling molecules, for both orga...
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://eprints.sunway.edu.my/603/ http://eprints.sunway.edu.my/603/1/Tiekink%20ERT%20-%20Conference%203_2017.pdf |
| Summary: | In order to achieve the ultimate goal of crystal engineering, the deliberate and rational
design of the molecular packing in crystals, a thorough understanding of the way molecules
self-assemble in the condensed phase is required. A particular favourite mode of
assembling molecules, for both organic compounds and coordination complexes, relies on
conventional hydrogen-bonding; halogen bonding is increasingly being recognised as
being able to provide reliable supramolecular synthons. The formation of dative/coordinate
bonds between donor bases and metal centres is a hugely important mode of selfassociation
of coordination complexes, often leading to the ubiquitous coordination
polymers/metal-organic frameworks. The aim of this presentation is to explore other
modes of supramolecular assembly pertaining to coordination complexes exclusively. For
example, it turns out that chelate rings can participate in supramolecular synthons much in
the same way as arene rings do. Thus, chelate rings may assemble via stacking
interactions of the type (chelate)…(chelate) resembling (arene)…(arene) interactions,
and they can function as acceptors in C–H…(chelate) interactions akin to C–H…(arene)
contacts. A survey of these, and more, will be presented to highlight the supramolecular
assemblies they sustain along with theoretical considerations to explain the nature of the
supramolecular association and the energies of stabilisation they impart to the molecular
packing. |
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