Resonance Raman and time-resolved resonance Raman studies of tris(4-methyl-2,2[prime]-bipyridine)ruthenium(II). Polarization of the radical fragment of the [sup 3]MLCT states

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00070a020· OSTI ID:7071447

Treffert-Ziemelis, S M; Golus, J; Kincaid, J R ^[1]; Strommen, D P ^[2]

---

1. Marquette Univ., Milwaukee, WI (United States)
2. Marquette Univ., Milwaukee, WI (United States) Idaho State Univ., Pocatello, ID (United States)

The resonance Raman (RR) and time-resolved resonance Raman(TR[sub 3]) spectra are reported for the tris(4-methyl-2,2[prime]-bipyridine)ruthenium(II) complex, Ru(mmb)[sub 3][sup 2+], and its methyl-deuteriated analogue, Ru(d[sub 3]-mmb)[sub 3][sup 2+]. The spectra are compared to those of tris(2,2[prime]-bipyridine)ruthenium(II), Ru(bpy)[sub 3][sup 2+], and tris(4,4-dimethyl-2,2[prime]-bipyridine)-ruthenium(II), Ru(dmb)[sub 3][sup 2+], and its methyl-deuteriated analogue Ru(d[sub 6]-dmb)[sub 3][sup 2+]. The spectra of the ground state of the complex with the asymmetric ligand, mmb, are readily interpretable in terms of vibrationally isolated fragments (pyridine and 4-methylpyridine) with the exception of a few modes which are assignable to stretches of the inter-ring and adjacent bands. The TR[sup 3] spectra are shown to be consistent with slight polarization of the [sup 3]MLCT excited-state charge distribution toward the pyridine fragment of the chelated anion.

• OSTI ID: 7071447
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 32:18; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CATIONS
CHARGED PARTICLES
COMPLEXES
IONS
LASER SPECTROSCOPY
POLARIZATION
RADICALS
RAMAN SPECTROSCOPY
RESOLUTION
RUTHENIUM COMPLEXES
SPECTROSCOPY
TIME RESOLUTION
TIMING PROPERTIES
TRANSITION ELEMENT COMPLEXES