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Quantification of Stereochemical Communication in Metal-Organic Assemblies.

ABSTRACT: The derivation and application of a statistical mechanical model to quantify stereochemical communication in metal-organic assemblies is reported. The factors affecting the stereochemical communication within and between the metal stereocenters of the assemblies were experimentally studied by optical spectroscopy and analyzed in terms of a free energy penalty per "incorrect" amine enantiomer incorporated, and a free energy of coupling between stereocenters. These intra- and inter-vertex coupling constants are used to track the degree of stereochemical communication across a range of metal-organic assemblies (employing different ligands, peripheral amines, and metals); temperature-dependent equilibria between diastereomeric cages are also quantified. The model thus provides a unified understanding of the factors that shape the chirotopic void spaces enclosed by metal-organic container molecules.

SUBMITTER: Castilla AM

PROVIDER: S-EPMC5012202 | biostudies-other | 2016 Aug

REPOSITORIES: biostudies-other

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Quantification of Stereochemical Communication in Metal-Organic Assemblies.

Castilla Ana M AM Miller Mark A MA Nitschke Jonathan R JR Smulders Maarten M J MM

Angewandte Chemie (Weinheim an der Bergstrasse, Germany) 20160602 36

The derivation and application of a statistical mechanical model to quantify stereochemical communication in metal-organic assemblies is reported. The factors affecting the stereochemical communication within and between the metal stereocenters of the assemblies were experimentally studied by optical spectroscopy and analyzed in terms of a free energy penalty per "incorrect" amine enantiomer incorporated, and a free energy of coupling between stereocenters. These intra- and inter-vertex coupling ...[more]

PMID: 27656004

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