Ghoshal, Debajyoti ; Bialas, Hanna ; Escuer, Albert ; Font-Bardía, Mercé ; Maji, Tapas Kumar ; Ribas, Joan ; Solans, Xavier ; Vicente, Ramon ; Zangrando, Ennio ; Chaudhuri, Nirmalendu Ray (2003) Syntheses, structure and magnetic properties of the first μ1,5-dicyanamido-bridged dinuclear compounds [Ni(μ1,5-dca)(dca)(dpt)]2 and [Ni(μ1,5-dca)(dca)(medpt)]2 European Journal of Inorganic Chemistry, 2003 (21). pp. 3929-3933. ISSN 1434-1948
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Official URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/ej...
Related URL: http://dx.doi.org/10.1002/ejic.200300033
Abstract
The first structural determination of dinuclear compounds with μ1,5‐dicyanamide [dca, N(CN)2-] as bridging ligand has been achieved with the products of formula [Ni(μ1,5‐dca)(dca)(dpt)]2 (1) and [Ni(μ1,5‐dca)(dca)(medpt)]2 (2) [dpt = bis(3‐aminopropyl)amine and medpt = bis(3‐aminopropyl)methylamine]. The X‐ray diffraction analysis reveals dinuclear compounds with double μ1,5‐dicyanamide bridges. The nickel atoms are hexacoordinate. The small differences in the terminal ligand (dpt or medpt) create a drastic change in the magnetic behaviour: the susceptibility measurements of 1 show weak antiferromagnetic coupling (J = −1.2 cm-1, g = 2.29) whereas those of 2 show ferromagnetic coupling (J = 0.7 cm-1, g = 2.17). The related compound (μ‐terephthalato)[Ni(dca)(dpt)(H2O)]2 (3) is also described. The X‐ray diffraction analysis reveals a dinuclear terephthalato‐bridged NiII compound with terminal dca ligands. The susceptibility measurements of 3 indicate weak antiferromagnetic coupling: J = −0.3 cm-1, g = 2.13.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | N Ligands; Bridging Ligands; Nickel Magnetic Properties |
| ID Code: | 114733 |
| Deposited On: | 29 May 2018 11:16 |
| Last Modified: | 29 May 2018 11:16 |
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