Ray, Mau Sinha ; Ghosh, Ashutosh ; Bhattacharya, R. ; Mukhopadhyay, G. ; Drew, M. G. B. ; Ribas, Joan (2004) Differentsupramolecular hydrogen bond structures and significant changes in magnetic properties in dinuclear μ2-1,1-N3 copper (II) complexes with very similar tridentate Schiff base blocking ligands Dalton Transactions (2). pp. 252-259. ISSN 1477-9226
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Official URL: http://pubs.rsc.org/En/content/articlelanding/2004...
Related URL: http://dx.doi.org/10.1039/B311499F
Abstract
Three new basal–apical, μ2-1,1-azide bridged complexes, [CuL1(N3)]2 (1), [CuL2(N3)]2 (2) and [CuL3(N3)]2 (3) with very similar tridentate Schiff base blocking ligands [L1 = N-(3-aminopropyl)salicylaldimine, L2 = 7-amino-4-methyl-5-azahept-3-en-2-one and L3 = 8-amino-4-methyl-5-azaoct-3-en-2-one) have been synthesised and their molecular structures determined by X-ray crystallography. In complex 1, there is no inter-dimer H-bonding. However, complexes 2 and 3 form two different supramolecular structures in which the dinuclear entities are linked by strong H-bonds giving one-dimensional systems. Variable-temperature (300–2 K) magnetic susceptibility measurements and magnetization measurements at 2 K reveal that complexes 1 and 2 have antiferromagnetic coupling while 3 has ferromagnetic coupling which is also confirmed by EPR spectra at 4–300 K. Magnetostructural correlations have been made taking into consideration both the azido bridging ligands and the existence of intermolecular hydrogen bonds in complexes 2 and 3.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry. |
ID Code: | 108401 |
Deposited On: | 13 Oct 2017 12:48 |
Last Modified: | 13 Oct 2017 12:48 |
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