MilliporeSigma
  • Home
  • Search Results
  • Two water-bridged cobalt(II) chains with isomeric naphthoate spacers: from metamagnetic to single-chain magnetic behaviour.

Two water-bridged cobalt(II) chains with isomeric naphthoate spacers: from metamagnetic to single-chain magnetic behaviour.

Dalton transactions (Cambridge, England : 2003) (2015-10-31)
Zhong-Yi Liu, Yan-Fei Xia, Jiao Jiao, En-Cui Yang, Xiao-Jun Zhao
ABSTRACT

The crystal structures and magnetic behaviours of two water-bridged one-dimensional (1D) cobalt(II) chains with different isomeric naphthoate (na(-)) terminals, [Co(H2O)3(2-na)2]n (1) and {[Co(H2O)3(1-na)2]·2H2O}n (2), were reported to investigate the effect of interchain distance on their magnetic properties. Complex 1 with trans-2-na(-) blocks and dense interchain separation exhibits a metamagnetic transition from antiferromagnetic ordering to a saturated paramagnetic phase. By contrast, complex 2 possessing cis-arranged 1-na(-) spacers and good interchain isolation shows unusual single-chain magnetic behavior under a zero dc field. Thus, completely different interchain packing by isomeric naphthoate ligands governs the ratio of intra- to inter-chain magnetic interactions and further results in different magnetic phenomena, which provide significant magnetostructural information on 1D magnetic systems.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Mercury, electronic grade, 99.9999% trace metals basis
Sigma-Aldrich
Mercury, ≥99.99% trace metals basis
Sigma-Aldrich
Mercury, ACS reagent, 99.9995% trace metals basis