A time-resolved infrared spectroscopic study of[M(SnR3)2(CO)2-(α-diimine)] (M = Ru, Os; R = Ph, Me): Evidence of charge redistribution in the lowest-excited state

J. A. Weinstein; J. Van Slageren; D. J. Stufkens; S. Záliš; M. W. George

A time-resolved infrared spectroscopic study of[M(SnR₃)₂(CO)₂-(α-diimine)] (M = Ru, Os; R = Ph, Me): Evidence of charge redistribution in the lowest-excited state

J. A. Weinstein, J. Van Slageren, D. J. Stufkens, S. Záliš, M. W. George

Research output: Journal Publication › Article › peer-review

22 Citations (Scopus)

Abstract

According to previous electronic absorption, resonance Raman and DFT studies the lowest-energy electronic transition of the Ru^II and Os^II complexes trans,cis-[M(SnR₃)₂(CO)₂(α-diimine)] (α-diimine = bpy,etc.) has a σ(Sn-M-Sn) →π*(α-diimine) or sigma-bond-to-ligand charge-transfer (SBLCT) character. Nanosecond time-resolved step-scan IR (s²-TRIR) spectra of a series of these complexes are reported which indicate that the initial SBLCT excitation is followed by a redistribution of the electron density if this transition has an appreciable charge transfer character. This effect is virtually the same for the Ru and Os compounds, but different for the SnMe₃ and SnPh₃ complexes. s²-TRIR spectra of [Os(SnPh₃)₂(CO)₂(dmb)] showed the occurrence of an infrared rigidochromic e3ect in a low-temperature glass.

Original language	English
Pages (from-to)	2587-2592
Number of pages	6
Journal	Journal of the Chemical Society. Dalton Transactions
Issue number	18
Publication status	Published - 2001
Externally published	Yes

ASJC Scopus subject areas

General Chemistry

Cite this

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title = "A time-resolved infrared spectroscopic study of[M(SnR3)2(CO)2-(α-diimine)] (M = Ru, Os; R = Ph, Me): Evidence of charge redistribution in the lowest-excited state",

abstract = "According to previous electronic absorption, resonance Raman and DFT studies the lowest-energy electronic transition of the RuII and OsII complexes trans,cis-[M(SnR3)2(CO)2(α-diimine)] (α-diimine = bpy,etc.) has a σ(Sn-M-Sn) →π*(α-diimine) or sigma-bond-to-ligand charge-transfer (SBLCT) character. Nanosecond time-resolved step-scan IR (s2-TRIR) spectra of a series of these complexes are reported which indicate that the initial SBLCT excitation is followed by a redistribution of the electron density if this transition has an appreciable charge transfer character. This effect is virtually the same for the Ru and Os compounds, but different for the SnMe3 and SnPh3 complexes. s2-TRIR spectra of [Os(SnPh3)2(CO)2(dmb)] showed the occurrence of an infrared rigidochromic e3ect in a low-temperature glass.",

author = "Weinstein, {J. A.} and {Van Slageren}, J. and Stufkens, {D. J.} and S. Z{\'a}li{\v s} and George, {M. W.}",

year = "2001",

language = "English",

pages = "2587--2592",

journal = "Journal of the Chemical Society. Dalton Transactions",

issn = "1470-479X",

publisher = "Royal Society of Chemistry",

number = "18",

}

A time-resolved infrared spectroscopic study of[M(SnR₃)₂(CO)₂-(α-diimine)] (M = Ru, Os; R = Ph, Me): Evidence of charge redistribution in the lowest-excited state. / Weinstein, J. A.; Van Slageren, J.; Stufkens, D. J. et al.
In: Journal of the Chemical Society. Dalton Transactions, No. 18, 2001, p. 2587-2592.

Research output: Journal Publication › Article › peer-review

TY - JOUR

T1 - A time-resolved infrared spectroscopic study of[M(SnR3)2(CO)2-(α-diimine)] (M = Ru, Os; R = Ph, Me)

T2 - Evidence of charge redistribution in the lowest-excited state

AU - Weinstein, J. A.

AU - Van Slageren, J.

AU - Stufkens, D. J.

AU - Záliš, S.

AU - George, M. W.

PY - 2001

Y1 - 2001

N2 - According to previous electronic absorption, resonance Raman and DFT studies the lowest-energy electronic transition of the RuII and OsII complexes trans,cis-[M(SnR3)2(CO)2(α-diimine)] (α-diimine = bpy,etc.) has a σ(Sn-M-Sn) →π*(α-diimine) or sigma-bond-to-ligand charge-transfer (SBLCT) character. Nanosecond time-resolved step-scan IR (s2-TRIR) spectra of a series of these complexes are reported which indicate that the initial SBLCT excitation is followed by a redistribution of the electron density if this transition has an appreciable charge transfer character. This effect is virtually the same for the Ru and Os compounds, but different for the SnMe3 and SnPh3 complexes. s2-TRIR spectra of [Os(SnPh3)2(CO)2(dmb)] showed the occurrence of an infrared rigidochromic e3ect in a low-temperature glass.

AB - According to previous electronic absorption, resonance Raman and DFT studies the lowest-energy electronic transition of the RuII and OsII complexes trans,cis-[M(SnR3)2(CO)2(α-diimine)] (α-diimine = bpy,etc.) has a σ(Sn-M-Sn) →π*(α-diimine) or sigma-bond-to-ligand charge-transfer (SBLCT) character. Nanosecond time-resolved step-scan IR (s2-TRIR) spectra of a series of these complexes are reported which indicate that the initial SBLCT excitation is followed by a redistribution of the electron density if this transition has an appreciable charge transfer character. This effect is virtually the same for the Ru and Os compounds, but different for the SnMe3 and SnPh3 complexes. s2-TRIR spectra of [Os(SnPh3)2(CO)2(dmb)] showed the occurrence of an infrared rigidochromic e3ect in a low-temperature glass.

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A time-resolved infrared spectroscopic study of[M(SnR₃)₂(CO)₂-(α-diimine)] (M = Ru, Os; R = Ph, Me): Evidence of charge redistribution in the lowest-excited state

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