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Supramolecular Isomerism of One‐Dimensional Copper(II) Phosphonate and Its Influence on the Magnetic Properties

Supramolecular Isomerism of One‐Dimensional Copper(II) Phosphonate and Its Influence on the... The reaction of 1‐phosphonomethyl‐2‐benzimidazolpyrrolidine (pmbpH2) and CuCl2 under slightly different conditions has generated three isomers: (Cu(pmbp))⋅2.5 H2O (1), (Cu(pmbp))⋅2 H2O (2), and (Cu(pmbp)(H2O))⋅x H2O (3). All show 1D chain structures in which the adjacent CuII ions are connected purely by the OPO bridges, but the chains are packed in different manners. Dominant antiferromagnetic interactions are observed in these compounds. However, the coupling constant between the metal centers varies significantly for the isomers, which is attributed mainly to the intrachain structural parameters, such as the intrachain Cu⋅⋅⋅Cu distance and the torsion angles over the phosphonate bridge. DFT calculations have been conducted to understand the magnetostructural relationship. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ChemPlusChem Wiley

Supramolecular Isomerism of One‐Dimensional Copper(II) Phosphonate and Its Influence on the Magnetic Properties

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References (79)

Publisher
Wiley
Copyright
Copyright © 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
2192-6506
eISSN
2192-6506
DOI
10.1002/cplu.201200188
Publisher site
See Article on Publisher Site

Abstract

The reaction of 1‐phosphonomethyl‐2‐benzimidazolpyrrolidine (pmbpH2) and CuCl2 under slightly different conditions has generated three isomers: (Cu(pmbp))⋅2.5 H2O (1), (Cu(pmbp))⋅2 H2O (2), and (Cu(pmbp)(H2O))⋅x H2O (3). All show 1D chain structures in which the adjacent CuII ions are connected purely by the OPO bridges, but the chains are packed in different manners. Dominant antiferromagnetic interactions are observed in these compounds. However, the coupling constant between the metal centers varies significantly for the isomers, which is attributed mainly to the intrachain structural parameters, such as the intrachain Cu⋅⋅⋅Cu distance and the torsion angles over the phosphonate bridge. DFT calculations have been conducted to understand the magnetostructural relationship.

Journal

ChemPlusChemWiley

Published: Dec 1, 2012

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