| Full text | |
| Author(s): |
Ana P. Mangoni
[1]
;
Bruno B. N. S. Brandão
[2]
;
Jorge S. Shinohara
[3]
;
Alceu T. Silveira
[4]
;
Marcelo Nakamura
[5]
;
Henrique E. Toma
[6]
Total Authors: 6
|
| Affiliation: | [1] Universidade de São Paulo. Instituto de Química - Brasil
[2] Universidade de São Paulo. Instituto de Química - Brasil
[3] Universidade de São Paulo. Instituto de Química - Brasil
[4] Universidade de São Paulo. Instituto de Química - Brasil
[5] Universidade de São Paulo. Instituto de Química - Brasil
[6] Universidade de São Paulo. Instituto de Química - Brasil
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | Química Nova; v. 42, n. 9, p. 1020-1028, 2019-12-05. |
| Abstract | |
The chemistry and spectroscopy of the iron(II) phenylterpyrazine complex, [Fe(phtpz)2]2+, were investigated in comparison with the analogous phenylterpyridine species, Fe(phtpy)2]2+, and the results indicated a strong electronic delocalization on the Fe(II) terimine chromophore encompassing the lateral pyrazyl groups. The delocalized nature of the molecular orbitals involved in the electronic excitation precluded a direct assignment of the pyridine and pyrazine vibrations in the complex. However, the capability of the terpyrazine complex to bind transition metal ions, such as the [Fe(CN)5]3- species, allowed to generate pentanuclear complexes displaying characteristic charge-transfer and resonance Raman spectra, revealing the pyrazine vibrations in the complex. The [Fe(CN)5]3- containing species also yielded polymeric compounds in presence of transition metal ions, exhibiting intervalence transfer bands and chemical similarities with the Prussian Blue complex. (AU) | |
| FAPESP's process: | 18/21489-1 - Supramolecular nanotechnology: design, materials and devices |
| Grantee: | Henrique Eisi Toma |
| Support Opportunities: | Research Projects - Thematic Grants |