A new synthetic route to the preparation of a series of strong photoreducing agents: fac Tris-ortho-metalated complexes of iridium(III) with substituted 2-phenylpyridines

Journal Article · Wed Apr 17 04:00:00 EDT 1991 · Inorganic Chemistry; (United States)

OSTI ID:5405045

Zhang, Y; Baer, C D; Camaioni-Neto, C; O'Brien, P; Sweigart, D A ^[1]

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1. Brown Univ., Providence, RI (USA)

A new procedure is reported for the high-yield synthesis of fac-tris-ortho-metalated complexes of Ir(III) with 2-phenylpyridine (Hppy) and with substituted 2-phenylpyridine (R-Hppy) ligands. The reported procedure uses the Ir(III) starting material Ir(acac){sub 3} (acac = 2,4-pentanedionate) and typically produces the fac-tris-ortho-metalated complexes in yields of 40-75%. Each of the complexes formed with substituted phenylpyridines exhibited a luminescence lifetime of approximately 2-5 microseconds in nitrogen-saturated acetonitrile at room temperature, and each complex is characterized by a reversible oxidative wave in cyclic voltammetry in acetonitrile. 42 refs., 1 fig., 1 tab.

• DOE Contract Number: FG03-88ER13842
• OSTI ID: 5405045
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 30:8; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
AZINES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DATA
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
IRIDIUM COMPLEXES
LUMINESCENCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMISTRY
PYRIDINES
REDOX REACTIONS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES