Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
On the photochemical behavior of the [Ru(NH3)(4)(NO)nicotinamide](3+) cation and the relative stability of light-induced metastable isonitrosyl isomers of Ru complexes
Autore:
Kim, C; Novozhilova, I; Goodman, MS; Bagley, KA; Coppens, P;
Indirizzi:
SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA SUNY Buffalo Buffalo NY USA 14260 ffalo, Dept Chem, Buffalo, NY 14260 USA SUNY Coll Buffalo, Dept Chem, Buffalo, NY 14222 USA SUNY Coll Buffalo Buffalo NY USA 14222 , Dept Chem, Buffalo, NY 14222 USA
Titolo Testata:
INORGANIC CHEMISTRY
fascicolo: 25, volume: 39, anno: 2000,
pagine: 5791 - 5795
SICI:
0020-1669(200012)39:25<5791:OTPBOT>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
NA2.2H2O SINGLE-CRYSTALS; TRANSPARENT MOLECULAR SYSTEMS; X-RAY-DIFFRACTION; NITROSYL COMPLEXES; OPTICAL DISPERSION; LINKAGE ISOMERS; STATES; KIND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Coppens, P SUNY Buffalo, Dept Chem, Buffalo, NY 14260 USA SUNY Buffalo Buffalo NY USA 14260 Chem, Buffalo, NY 14260 USA
Citazione:
C. Kim et al., "On the photochemical behavior of the [Ru(NH3)(4)(NO)nicotinamide](3+) cation and the relative stability of light-induced metastable isonitrosyl isomers of Ru complexes", INORG CHEM, 39(25), 2000, pp. 5791-5795

Abstract

Low-temperature IR experiments on crystalline samples of trans-[Ru(NH3)(4)(NO) nicotinamide](3+) salts show a light-induced absorption band typical for MS 1 NO linkage isomers upon exposure to 300-500 nm light from a Xe source. The formation of a metastable species is confirmed by DSC measurement on a sample irradiated at low temperature with 457 nm light from an Ar+ laser. The light-induced species decays between 250 and 260 K according to bothIR and DSC results. This decay temperature (Td) is somewhat below that observed for other high-Td linkage isomers, even though the NO-stretching frequency of the of [Ru(NH3)4(NO) nicotinamide](3+) ion is above that of the other isomers, demonstrating a lack of precise correlation between the two physical properties. The 90 K crystal structure of trans-[Ru(NH3)(4)(NO)nicotinamide](SiF6)(NO3).H2O is reported. The geometry from theoretical DFT calculations of the ground-state structure agrees well with the experimental results, except for the orientation of the CONH2 substituent in the pyridine ring, which is rotated by 180 degrees in the crystal due to packing effects. The MS1 and MS2 linkage isomers are found to correspond to local minima on the ground-state potential energy surface, and their geometries and energies are reported.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 19:01:55