Issue 8, 2000

One-dimensional chains consisting of copper(II) ions and an orthogonal anthracene-pyrimidine derivative: hierarchical formation of high-dimensional networks and their magnetic properties

Abstract

Recrystallization of 9-(5-pyrimidinyl)anthracene (1) with copper(II) nitrate trihydrate formed three kinds of complexes: 1·Cu(NO3)2·H2O (2), 1·Cu(NO3)2·MeOH·H2O (3) and 1·Cu(NO3)2·2EtOH (4) by changing the recrystallization solvent. The crystal structure of the three complexes showed cooperation of metal coordination, hydrogen bonding, and aromatic stacking interactions in the hierarchical formation of one-, two- and three-dimensional networks. Complexes 2 and 3 formed zigzag one-dimensional chains consisting of 1 and Cu2+ ions by coordination of pyrimidine to Cu2+ ion in equatorial trans fashion. Complex 4 formed a spiral one-dimensional chain by coordination in equatorial cis fashion. The magnetic behavior of 2, 3, and 4 were measured on a SQUID susceptometer to reveal that there existed strong antiferromagnetic interactions between Cu2+ ions. The magnetic data of one-dimensional antiferromagnetic chains were analyzed by the Bonner–Fisher model. The antiferromagnetic interaction between Cu2+ ions was around −55 K, which is the largest value observed in pyrimidine-bridged Cu2+ ions.

Supplementary files

Article information

Article type
Paper
Submitted
21 Mar 2000
Accepted
17 May 2000
First published
05 Jul 2000

New J. Chem., 2000,24, 609-613

One-dimensional chains consisting of copper(II) ions and an orthogonal anthracene-pyrimidine derivative: hierarchical formation of high-dimensional networks and their magnetic properties

T. Ezuhara, K. Endo, K. Matsuda and Y. Aoyama, New J. Chem., 2000, 24, 609 DOI: 10.1039/B002315I

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