Abstract:
A new mononuclear Ru(II) complex of formula [Ru(NH3)4(2-PCA)](PF6)2, (1), with 2-PCA = 2-pyridinealdazine, has been synthesized and characterized by spectroscopic and electrochemical techniques. The complete structure of (1) was determined by X-ray diffraction. A strong π-backbonding effect dπ(Ru) → π *(2-PCA) is disclosed in (1) by the high value of the RuIII/RuII redox potential and the short Ru-N(imine) bond length, which leads to a weakened N[sbnd]N bond in coordinated 2-PCA compared to that of the free ligand and thus to an enhanced reactivity in acidic media. In effect, the product of the reaction of excess Ru with 2-PCA is not the dinuclear species bridged by 2-PCA, but the already known 2-iminopyridine complex of tetraammineruthenium(II). DFT and TD-DFT calculations of (1) were consistent with experimental results and allowed the complete assignment of its UV–Visible bands. © 2017 Elsevier B.V.
Registro:
| Documento: |
Artículo
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| Título: | Strong metal-to-ligand π-backbonding weakens the N[sbnd]N bond in 2-pyridinealdazine coordinated to tetraammine-ruthenium(II) |
| Autor: | Cattaneo, M.; Alborés, P.; Fagalde, F.; Katz, N.E. |
| Filiación: | INQUINOA-UNT-CONICET, Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 491, San Miguel de Tucumán, T4000INI, Argentina
INQUIMAE-UBA-CONICET, DQIAyQF, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, 3°piso, Buenos Aires, C1428EHA, Argentina
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| Año: | 2017
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| Volumen: | 80
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| Página de inicio: | 69
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| Página de fin: | 71
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| DOI: |
http://dx.doi.org/10.1016/j.inoche.2017.04.012 |
| Título revista: | Inorganic Chemistry Communications
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| Título revista abreviado: | Inorg. Chem. Commun.
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| ISSN: | 13877003
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| CODEN: | ICCOF
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13877003_v80_n_p69_Cattaneo |
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Citas:
---------- APA ----------
Cattaneo, M., Alborés, P., Fagalde, F. & Katz, N.E.
(2017)
. Strong metal-to-ligand π-backbonding weakens the N[sbnd]N bond in 2-pyridinealdazine coordinated to tetraammine-ruthenium(II). Inorganic Chemistry Communications, 80, 69-71.
http://dx.doi.org/10.1016/j.inoche.2017.04.012---------- CHICAGO ----------
Cattaneo, M., Alborés, P., Fagalde, F., Katz, N.E.
"Strong metal-to-ligand π-backbonding weakens the N[sbnd]N bond in 2-pyridinealdazine coordinated to tetraammine-ruthenium(II)"
. Inorganic Chemistry Communications 80
(2017) : 69-71.
http://dx.doi.org/10.1016/j.inoche.2017.04.012---------- MLA ----------
Cattaneo, M., Alborés, P., Fagalde, F., Katz, N.E.
"Strong metal-to-ligand π-backbonding weakens the N[sbnd]N bond in 2-pyridinealdazine coordinated to tetraammine-ruthenium(II)"
. Inorganic Chemistry Communications, vol. 80, 2017, pp. 69-71.
http://dx.doi.org/10.1016/j.inoche.2017.04.012---------- VANCOUVER ----------
Cattaneo, M., Alborés, P., Fagalde, F., Katz, N.E. Strong metal-to-ligand π-backbonding weakens the N[sbnd]N bond in 2-pyridinealdazine coordinated to tetraammine-ruthenium(II). Inorg. Chem. Commun. 2017;80:69-71.
http://dx.doi.org/10.1016/j.inoche.2017.04.012
