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Author

Rohde, Jan-Uwe
Transition Metal Chemistry
Research Interests
  • Inorganic chemistry, coordination chemistry, organometallic chemistry, chemical synthesis, catalysis, green chemistry, inorganic reaction mechanisms.

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Stabilization of Iridium(IV) by Monoanionic Dialkyldiarylguanidinato Ligands

Cited 11 times inthomson ciCited 12 times inthomson ci
Title
Stabilization of Iridium(IV) by Monoanionic Dialkyldiarylguanidinato Ligands
Author
Rohde, Jan-UweLee, Wei-Tsung
Keywords
Chemical equations; Chemical oxidation; Cis-cyclooctene; Electron transfer; Electron-rich; Nitrogen-donor ligands; One-electron transfer; Single-crystal structure; Spectroscopic method
Issue Date
200907
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.131, no.26, pp.9162 - 9163
Abstract
Electron-rich tris(guanidinato) complexes of IrIII, [Ir{ArNC(NR2)NAr}3] (where R = Me or Et; Ar = Ph or 4-MeC6H4), were synthesized from the respective [Ir{ArNC(NR2)NAr}(C8H14) 2] precursors (C8H14 = cis-cyclooctene), are air-sensitive, and can be electrochemically oxidized in two one-electron transfer steps. The first electron transfer is reversible and occurs at much lower potentials than typical for IrIII. Chemical oxidation by [FeCp2]PF6 afforded isolable, paramagnetic IrIV compounds, [Ir{ArNC(NR2)NAr}3]PF6, which were characterized by analytical and spectroscopic methods and a single-crystal structure determination, demonstrating that IrIV is accessible in a nitrogen-donor ligand environment.
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DOI
http://dx.doi.org/10.1021/ja9033445
ISSN
0002-7863
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