Synthesis, structures, and properties of iridium(III) bis-cyclometallated complexes containing three-atom chelates

Wu Sian Sie, Jing Yu Jian, Tzu Chih Su, Gene Hsiang Lee, Hon Man Lee, Kom Bei Shiu

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20 Citations (Scopus)


Heating of [Ir(η2-ppy)2(MeCN)2]NO3 (1, ppy = 2-phenylpyridine) in MeCN under reflux afforded [Ir(η2-ppy)22-NO3)] (2). Treatment of 1 with 2-mercaptopyridine (Hmp), 6-methyl-2-hydroxypyridine (Hmhp), 6-chloro-2-hydroxypyridine (Hchp), trimethylacetic acid (Htma), benzoic acid (Hbz), 2-methylacrylic acid (Hma), and acetic acid (Hac) in the presence of excess Et3N produced [Ir(η2-ppy)22-XZY)] (XZY- = mp- (3), mhp- (4), chp- (5), ac- (6), bz- (7), ma- (8), tma- (9)). Crystal structures of 2, 3, 7, 8, and 9 have been characterized by X-ray diffraction. The inherent strain contained in the four-member rings, {Ir(η2-XZY)}, is apparently reflected in the long Ir-X and Ir-Y distances. The absorption and emission properties of nearly all the new complexes except 2 show small variations.

Original languageEnglish
Pages (from-to)1510-1517
Number of pages8
JournalJournal of Organometallic Chemistry
Issue number8-9
Publication statusPublished - 2008 Apr 15


All Science Journal Classification (ASJC) codes

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

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