Issue 36, 2007

A three-dimensional ferromagnet based on linked copper–azido clusters

Abstract

Two novel three-dimensional coordination polymers [Cu6(N3)12(N-Eten)2]n (1) (N-Eten = N-ethylethylenediamine) and {[Cu9(N3)18(1,2-pn)4]·H2O}n (2) (1,2-pn = 1,2-diaminopropane) have been synthesized by the self-assembly reactions of Cu(NO3)2·3H2O, NaN3 and small diamine ligands. Their molecular structures were determined by single-crystal X-ray diffraction. Complex 1 is composed of a neutral 3D coordination framework based on unprecedented hexanuclear copper(II) clusters which features three types of bridging modes for azide (µ-1,1, µ-1,3 and µ-1,1,3). Complex 2 is a novel 3D coordination polymer featuring octanuclear copper–azido clusters and [Cu(diamine)2]2+ units which are linked by azido bridges. Magnetic studies for complex 1 show ferromagnetic ordering at 3.5 K, where the azido bridges mediate ferromagnetic coupling between adjacent Cu(II) ions. The magnetic data for 1 were fitted to a uniform hexanuclear copper model which yielded g = 2.21, J = 6.26 cm−1, zJ′ = 0.39 cm−1. Complex 2 shows ferromagnetic coupling in the octanuclear unit and antiferromagnetic interaction between neighboring units.

Graphical abstract: A three-dimensional ferromagnet based on linked copper–azido clusters

Supplementary files

Article information

Article type
Paper
Submitted
13 Jun 2007
Accepted
03 Aug 2007
First published
21 Aug 2007

Dalton Trans., 2007, 4067-4072

A three-dimensional ferromagnet based on linked copper–azido clusters

Z. Gu, J. Zuo and X. You, Dalton Trans., 2007, 4067 DOI: 10.1039/B708789F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements