Resonance Raman studies of bis(terpyridine)ruthenium(II) amino acid esters and diesters

Publication type:
Journal article
Metadata:
Autoren
  • Katja Heinze
  • Klaus Hampel
  • Stefanie Tschierlei
  • Michael Schmitt
  • Jürgen Popp
  • Sven Rau
Sammlungen
  • metadata
ISSN
1434-1948
Ausgabe der Veröffentlichung
21
Zeitschrift
European journal of inorganic chemistry
Schlüsselwörter
  • 540 Chemie
  • 540 Chemistry and allied sciences
Sprache
eng
Paginierung
Seiten: 3119 - 3126
Datum der Veröffentlichung
2009
Herausgeber
Wiley-VCH Verl.
Herausgeber URL
http://dx.doi.org/10.1002/ejic.200900309
Datum der Datenerfassung
2020
Datum, an dem der Datensatz öffentlich gemacht wurde
2020
Zugang
Public
Titel
Resonance Raman studies of bis(terpyridine)ruthenium(II) amino acid esters and diesters
Ausgabe der Zeitschrift
2009

Data source: METADATA.UB

Other metadata sources:
Autoren
  • Katia Heinze
  • Klaus Hempel
  • Stefanie Tschierlei
  • Michael Schmitt
  • Juergen Popp
  • Sven Rau
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000268627500010&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/ejic.200900309
eISSN
1099-0682
Externe Identifier
  • Clarivate Analytics Document Solution ID: 478ZN
ISSN
1434-1948
Ausgabe der Veröffentlichung
21
Zeitschrift
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Schlüsselwörter
  • Charge transfer
  • Density functional calculations
  • Raman spectroscopy
  • Ruthenium
  • Terpyridine
Paginierung
3119 - 3126
Datum der Veröffentlichung
2009
Status
Published
Titel
Resonance Raman Studies of Bis(terpyridine)ruthenium(II) Amino Acid Esters and Diesters
Sub types
  • Article

Data source: Web of Science (Lite)

Abstract
<jats:title>Abstract</jats:title><jats:p>Resonance Raman (rR) spectroscopy in combination with DFT calculations was used to elucidate the nature of the <jats:sup>1</jats:sup>metal‐to‐ligand charge‐transfer states (<jats:sup>1</jats:sup>MLCT) of ester derivatives of homo‐ and heteroleptic bis(terpyridine)ruthenium(II) complexes [Ru<jats:sup>II</jats:sup>(tpy–COOC<jats:sub>2</jats:sub>H<jats:sub>5</jats:sub>)(tpy–R)](PF<jats:sub>6</jats:sub>)<jats:sub>2</jats:sub> with R = NH<jats:sub>2</jats:sub> (<jats:bold>1a</jats:bold>), R = COOC<jats:sub>2</jats:sub>H<jats:sub>5</jats:sub> (<jats:bold>1b</jats:bold>) and R = NHCOCH<jats:sub>3</jats:sub> (<jats:bold>1c</jats:bold>). The rR spectra provide evidence that the <jats:sup>1</jats:sup>MLCT states of <jats:bold>1b</jats:bold> and <jats:bold>1c</jats:bold> are well described by the expected <jats:sup>1</jats:sup>[(“<jats:italic>t</jats:italic><jats:sub>2g</jats:sub>”)<jats:sup>5</jats:sup>{π*(tpy–COOC<jats:sub>2</jats:sub>H<jats:sub>5</jats:sub>)}<jats:sup>1</jats:sup>] electron configuration, while the <jats:sup>1</jats:sup>MLCT state of the donor/acceptor‐substituted complex <jats:bold>1a</jats:bold> also involves the amine‐substituted terpyridine ligand. The excited state of <jats:bold>1a</jats:bold> can be described by a <jats:sup>1</jats:sup>[{d<jats:italic><jats:sub>yz</jats:sub></jats:italic>/π(tpy–NH<jats:sub>2</jats:sub>)}<jats:sup>1</jats:sup>{π*(tpy–COOC<jats:sub>2</jats:sub>H<jats:sub>5</jats:sub>)}<jats:sup>1</jats:sup>] electron configuration with ligand‐to‐ligand charge‐transfer (<jats:sup>1</jats:sup>LLCT) character. The mixed MLCT/LLCT character of the singlet excited state of <jats:bold>1a</jats:bold> is characterized by a low‐energy absorption maximum (<jats:italic>λ</jats:italic><jats:sub>max</jats:sub> = 500 nm). The π‐donor character of the tpy–NH<jats:sub>2</jats:sub> ligand is also corroborated by DFT calculations on model compounds (small HOMO/LUMO gap, short C–N bond, longer Ru–N bond). The emitting triplet state features a low‐energy emission maximum (<jats:italic>λ</jats:italic><jats:sub>max</jats:sub> = 744 nm) as well as a longer lifetime of the emitting state (<jats:italic>τ</jats:italic> = 33.7 ns) at room temperature in acetonitrile as compared to the data of <jats:bold>1b</jats:bold> and <jats:bold>1c</jats:bold>.(© Wiley‐VCH Verlag GmbH &amp; Co. KGaA, 69451 Weinheim, Germany, 2009)</jats:p>
Autoren
  • Katja Heinze
  • Klaus Hempel
  • Stefanie Tschierlei
  • Michael Schmitt
  • Jürgen Popp
  • Sven Rau
DOI
10.1002/ejic.200900309
eISSN
1099-0682
ISSN
1434-1948
Ausgabe der Veröffentlichung
21
Zeitschrift
European Journal of Inorganic Chemistry
Sprache
en
Online publication date
2009
Paginierung
3119 - 3126
Datum der Veröffentlichung
2009
Status
Published
Herausgeber
Wiley
Herausgeber URL
http://dx.doi.org/10.1002/ejic.200900309
Datum der Datenerfassung
2023
Titel
Resonance Raman Studies of Bis(terpyridine)ruthenium(II) Amino Acid Esters and Diesters
Ausgabe der Zeitschrift
2009

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