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Two novel 1D coordination chains containing the curcuminoid (CCMoid) ligand 9Accm have been characterized: [CoII(9Accm)2(4,4´-bpy)]n (1) and [NiII(9Accm)2(4,4´-bpy)]n (2). The two compounds were synthesized by solvothermal and microwave (MW) assisted techniques, respectively, and crystals of both systems were directly obtained from the mother solutions. Crystal structures of 1 and 2 prove that both systems are isostructural, with the ligands in a trans configuration. The two chains have been magnetically characterized in solution by paramagnetic 1H NMR, where 1 displayed typical features from CoII systems, with spread out signals; meanwhile, 2 showed diamagnetic behaviour. The dissociation of the latest in solution and the stability of the “[Ni(9Accm)2]” unit were proved by further experiments in C5D5N. Additional UV-Vis absorption and fluorescence studies in solution were performed using exclusively 1. In the solid state χMT vs. T and M/NµB vs. H/T data were collected and fitted for 1 and 2; both systems display Ising plane anisotropy, with significant D values. System 1 presented slow relaxation of the magnetization, displaying frequency dependence in the in-phase/out-phase ac magnetic susceptibility data, when an external dc field of 0.2 T was applied. Finally, 1 was deposited on a HOPG (highly oriented pyrolytic graphite) substrate by spin-coating and analysed by AFM.

Pertenece a

Digital.CSIC  

Autor(es)

Diaz Torres, Raul -  Menelaou, Melita -  González Campo, Arántzazu -  Teat, Simon J. -  Sañudo, E. Carolina -  Soler Jaumá, Mónica -  Aliaga Alcalde, Nuria - 

Id.: 70131896

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveCurcumin derivatives - 

Tipo de recurso: Artículo  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: openAccess

Requerimientos técnicos:  Browser: Any - 

Relación: [References] MINECO/ICTI2013-2016/MAT2013-47869-C4-2-P
[References] MINECO/ICTI2013-2016/SEV-2015-0496
[References] Publisher's version
[References] http://dx.doi.org/10.3390/magnetochemistry2030029
[References] Sí

Fecha de contribución: 19-dic-2017

Contacto:

Localización:
* Magnetochemistry 2(3): 29 (2016)
* 2312-7481
* 10.3390/magnetochemistry2030029

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