Abstract:
A survey of 18 paramagnetic species [LnRu(NO)]k, including seven new examples studied by in situ electrolysis, reveals a surprisingly narrow range of EPR parameters despite a wide variety of ligands such as pyridine, polypyridines, imines, amines, nitriles, phosphanes, carbonyl, cyclopentadienides, halides, hydride, hydroxide, thiocyanate or cyanide: g 1 = 2.015 ± 0.02, g2 = 1.990 ± 0.015, g 3 = 1.892 ± 0.03, gav = 1.968 ± 0.02, Δg = g1 - g3 = 0.122 ± 0.037, A 2(14N) = 3.3 ± 0.5 mT. This rather small variability, smaller still if the organometallic compounds are excluded, differs from the wider range of EPR data reported for nitrosyliron species with S = 1/2; apparently, the [RuNO]7 configuration involves a rather invariant and relatively covalent metal-NO interaction. DFT calculations were employed for [(NC)5Ru(NO)]3-to reproduce the EPR data, to evaluate the spin distribution (58% spin density on NO), and to reveal structural changes on reduction such as the Ru-N-O bending and Ru-NO bond lengthening. In addition, the possibility of staggered and eclipsed conformations is discussed. © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
Registro:
Documento: |
Artículo
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Título: | EPR insensitivity of the metal-nitrosyl spin-bearing moiety in complexes [LnRuII-NO.]k |
Autor: | Frantz, S.; Sarkar, B.; Sieger, M.; Kaim, W.; Roncaroli, F.; Olabe, J.A.; Záliš, S. |
Filiación: | Institut fur Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany Depto. de Quimica Inorganica, UBA, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina J. Heyrovsky Inst. of Phys. Chem., Acad. of Sci. of the Czech Republic, Dolejškova 3, 18223 Prague, Czech Republic
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Palabras clave: | Density functional calculations; EPR spectroscopy; Nitric oxide; Radical complexes; Ruthenium; amine; carbonyl derivative; cyanide; cyclopentadiene derivative; halide; hydroxide; imine; ligand; metal; nitric oxide; nitrile; nitrogen; organometallic compound; oxygen; pyridine; ruthenium; thiocyanate; analytic method; article; calculation; complex formation; electrolysis; electron spin resonance; magnetism; nitrosylation |
Año: | 2004
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Número: | 14
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Página de inicio: | 2902
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Página de fin: | 2907
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DOI: |
http://dx.doi.org/10.1002/ejic.200400042 |
Título revista: | European Journal of Inorganic Chemistry
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Título revista abreviado: | Eur. J. Inorg. Chem.
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ISSN: | 14341948
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CODEN: | EJICF
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CAS: | cyanide, 57-12-5; hydroxide, 14280-30-9; imine, 13774-92-0; nitric oxide, 10102-43-9; nitrogen, 7727-37-9; oxygen, 7782-44-7; pyridine, 110-86-1; ruthenium, 7440-18-8; thiocyanate, 302-04-5
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14341948_v_n14_p2902_Frantz |
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Citas:
---------- APA ----------
Frantz, S., Sarkar, B., Sieger, M., Kaim, W., Roncaroli, F., Olabe, J.A. & Záliš, S.
(2004)
. EPR insensitivity of the metal-nitrosyl spin-bearing moiety in complexes [LnRuII-NO.]k. European Journal of Inorganic Chemistry(14), 2902-2907.
http://dx.doi.org/10.1002/ejic.200400042---------- CHICAGO ----------
Frantz, S., Sarkar, B., Sieger, M., Kaim, W., Roncaroli, F., Olabe, J.A., et al.
"EPR insensitivity of the metal-nitrosyl spin-bearing moiety in complexes [LnRuII-NO.]k"
. European Journal of Inorganic Chemistry, no. 14
(2004) : 2902-2907.
http://dx.doi.org/10.1002/ejic.200400042---------- MLA ----------
Frantz, S., Sarkar, B., Sieger, M., Kaim, W., Roncaroli, F., Olabe, J.A., et al.
"EPR insensitivity of the metal-nitrosyl spin-bearing moiety in complexes [LnRuII-NO.]k"
. European Journal of Inorganic Chemistry, no. 14, 2004, pp. 2902-2907.
http://dx.doi.org/10.1002/ejic.200400042---------- VANCOUVER ----------
Frantz, S., Sarkar, B., Sieger, M., Kaim, W., Roncaroli, F., Olabe, J.A., et al. EPR insensitivity of the metal-nitrosyl spin-bearing moiety in complexes [LnRuII-NO.]k. Eur. J. Inorg. Chem. 2004(14):2902-2907.
http://dx.doi.org/10.1002/ejic.200400042