AI Article Synopsis
- A new polynuclear cobalt(II) compound, [Co(2)(N(3))(4)(HMTA)(H(2)O)](n), has been identified and characterized, featuring a unique structure with both end-to-end and end-on azido bridges linking cobalt atoms.
- The compound forms a complex 3D network with a unique topology that hasn't been previously reported, utilizing hexamethylenetetramine (HMTA) to connect multiple Co(II) atoms.
- Magnetic studies reveal that the compound displays specific interactions that lead to magnetic ordering below a critical temperature of 15.6 K, with the magnetic behavior described by the Curie-Weiss law in high temperature ranges.
Article Abstract
A new polynuclear azido-bridged Co(II) compound with formula [Co(2)(N(3))(4)(HMTA)(H(2)O)](n) (1) (HMTA = hexamethylenetetramine) has been structurally and magnetically characterized. The compound 1 crystallizes in the monoclinic system C2/m space group, and consist of a complex three-dimensional system in which end-to-end and end-on azido bridging ligands between the Co(II) atoms coexist. The HMTA ligand is also linking three different Co(II) atoms. The network analysis shows for 1 a three- and six-connected network topology not previously reported. The magnetic properties of 1 are also reported, and it was found that the magnetic interactions define another new three- and four-connected net assigned as a (6.8(2))(6(4).10(2))-tfo net. In the high temperature region the chi(M) versus T plot can be fitted by using the Curie-Weiss law, and the best fit theta value is -26.6 K. For 1 magnetic ordering and spontaneous magnetization is achieved below T(c) = 15.6 K.
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| http://dx.doi.org/10.1021/ic9005373 | DOI Listing |
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