Sarma, Monima ; Chatterjee, Tanmay ; Das, Samar K. (2011) Inorganic-organic hybrid materials based on Co(III) tetra-aza-macrocyclic complexes and Lindqvist type poly-oxo anions: Synthesis, characterization and spectroscopy of [CoIII(L)(NO2)2]2[Mo6O19] and [CoIII(L)(NCS)2]2[W6O19]·2CH3CN (L = Transdiene) Journal of Molecular Structure, 1004 (1-3). pp. 31-38. ISSN 0022-2860
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.molstruc.2011.07.012
Abstract
This article describes the synthesis and characterization of two polyoxometalate based ion-pair compounds [CoIII(L)(NO2)2]2[Mo6O19] (1) and [CoIII(L)(NCS)2]2[W6O19]·2CH3CN (2) (L = 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene). They have been isolated by anionic metathesis of the respective perchlorate and thiocyanate salts with the Lindqvist type isopolyanions. The detailed spectroscopic (IR, UV-visible and ESR) analyses have been performed on compounds 1 and 2 along with their unambiguous crystal structure determination. The polyoxometalate cluster anions not only serve as the counter anions but are also involved in extensive non-covalent interactions with the macrocyclic cationic complexes in their respective crystals. Phase homogeneity of the synthesized compounds in bulk has been established by the X-ray powder diffraction study. Thermal analysis has also been carried out on the title compounds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Trans-[14]-diene; Polyoxometalate; Crystallography; Spectroscopy; Thermogravimmetry |
| ID Code: | 63439 |
| Deposited On: | 29 Sep 2011 04:35 |
| Last Modified: | 23 Jun 2012 07:45 |
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