Structural comparison of (pentamethylcyclopentadienyl)iridium(III) azido complexes containing potentially N,S-bidentate N-heterocyclic thiolates

2- or 8-quinolinethiolate and benzimidazole-2-thiolate

Mai Kotera, Yusuke Sekioka, Takayoshi Suzuki

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The crystal structures of mononuclear (azido)(pentamethylcyclopentadienyl)iridium(III) complexes bearing 2- or 8-quinolinethiolate (n-Sqn-), [Cp*Ir(N3)(n-Sqn)] {n = 2 (1) or 8 (2); Cp* = η5-C5Me5} have been determined by X-ray analysis. The 2-Sqn complex, 1, acquires severe steric strains in the four-membered κ2N,S chelate ring, while the 8-Sqn isomer, 2, forms a strain-free five-membered planar κ2N,S chelate ring. It has also been revealed that the corresponding benzimidazole-2-thiolate (Hbimt-) complex, which was obtained similarly to the above n-Sqn complexes from [Cp*Ir(N3)2]2 and Na(Hbimt), takes an unsymmetrical dinuclear structure bridged by two Hbimt- ligands with different bonding modes, [Cp*Ir(N3){μ(S:N1)-Hbimt}{μ(S:S)-Hbimt}Ir(N3)Cp*] · MeOH (3).

Original languageEnglish
Pages (from-to)1479-1484
Number of pages6
JournalInorganica Chimica Acta
Volume361
Issue number5
DOIs
Publication statusPublished - Apr 1 2008
Externally publishedYes

Fingerprint

Iridium
iridium
chelates
Bearings (structural)
X-Rays
Ligands
rings
X ray analysis
Isomers
isomers
Crystal structure
ligands
crystal structure
x rays
benzimidazole

Keywords

  • 2-Mercaptobenzimidazole
  • Crystal structures
  • Iridium(III) azido complexes
  • Mercaptoquinoline
  • Unsymmetrical dinuclear structure

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

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title = "Structural comparison of (pentamethylcyclopentadienyl)iridium(III) azido complexes containing potentially N,S-bidentate N-heterocyclic thiolates: 2- or 8-quinolinethiolate and benzimidazole-2-thiolate",
abstract = "The crystal structures of mononuclear (azido)(pentamethylcyclopentadienyl)iridium(III) complexes bearing 2- or 8-quinolinethiolate (n-Sqn-), [Cp*Ir(N3)(n-Sqn)] {n = 2 (1) or 8 (2); Cp* = η5-C5Me5} have been determined by X-ray analysis. The 2-Sqn complex, 1, acquires severe steric strains in the four-membered κ2N,S chelate ring, while the 8-Sqn isomer, 2, forms a strain-free five-membered planar κ2N,S chelate ring. It has also been revealed that the corresponding benzimidazole-2-thiolate (Hbimt-) complex, which was obtained similarly to the above n-Sqn complexes from [Cp*Ir(N3)2]2 and Na(Hbimt), takes an unsymmetrical dinuclear structure bridged by two Hbimt- ligands with different bonding modes, [Cp*Ir(N3){μ(S:N1)-Hbimt}{μ(S:S)-Hbimt}Ir(N3)Cp*] · MeOH (3).",
keywords = "2-Mercaptobenzimidazole, Crystal structures, Iridium(III) azido complexes, Mercaptoquinoline, Unsymmetrical dinuclear structure",
author = "Mai Kotera and Yusuke Sekioka and Takayoshi Suzuki",
year = "2008",
month = "4",
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TY - JOUR

T1 - Structural comparison of (pentamethylcyclopentadienyl)iridium(III) azido complexes containing potentially N,S-bidentate N-heterocyclic thiolates

T2 - 2- or 8-quinolinethiolate and benzimidazole-2-thiolate

AU - Kotera, Mai

AU - Sekioka, Yusuke

AU - Suzuki, Takayoshi

PY - 2008/4/1

Y1 - 2008/4/1

N2 - The crystal structures of mononuclear (azido)(pentamethylcyclopentadienyl)iridium(III) complexes bearing 2- or 8-quinolinethiolate (n-Sqn-), [Cp*Ir(N3)(n-Sqn)] {n = 2 (1) or 8 (2); Cp* = η5-C5Me5} have been determined by X-ray analysis. The 2-Sqn complex, 1, acquires severe steric strains in the four-membered κ2N,S chelate ring, while the 8-Sqn isomer, 2, forms a strain-free five-membered planar κ2N,S chelate ring. It has also been revealed that the corresponding benzimidazole-2-thiolate (Hbimt-) complex, which was obtained similarly to the above n-Sqn complexes from [Cp*Ir(N3)2]2 and Na(Hbimt), takes an unsymmetrical dinuclear structure bridged by two Hbimt- ligands with different bonding modes, [Cp*Ir(N3){μ(S:N1)-Hbimt}{μ(S:S)-Hbimt}Ir(N3)Cp*] · MeOH (3).

AB - The crystal structures of mononuclear (azido)(pentamethylcyclopentadienyl)iridium(III) complexes bearing 2- or 8-quinolinethiolate (n-Sqn-), [Cp*Ir(N3)(n-Sqn)] {n = 2 (1) or 8 (2); Cp* = η5-C5Me5} have been determined by X-ray analysis. The 2-Sqn complex, 1, acquires severe steric strains in the four-membered κ2N,S chelate ring, while the 8-Sqn isomer, 2, forms a strain-free five-membered planar κ2N,S chelate ring. It has also been revealed that the corresponding benzimidazole-2-thiolate (Hbimt-) complex, which was obtained similarly to the above n-Sqn complexes from [Cp*Ir(N3)2]2 and Na(Hbimt), takes an unsymmetrical dinuclear structure bridged by two Hbimt- ligands with different bonding modes, [Cp*Ir(N3){μ(S:N1)-Hbimt}{μ(S:S)-Hbimt}Ir(N3)Cp*] · MeOH (3).

KW - 2-Mercaptobenzimidazole

KW - Crystal structures

KW - Iridium(III) azido complexes

KW - Mercaptoquinoline

KW - Unsymmetrical dinuclear structure

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