## Abstract A series of cationic diiminoiridium(III) complexes [Ir(ppy‐__N__,__C__)~2~(L‐__N__,__N__)](PF~6~) has been prepared [Hppy = 2‐phenylpyridine; L = 4,4′‐__t__Bu~2~dpbpy (1), 4,4′‐Me~2~dpbpy (2), 4,4′‐Me~2~pbpy (3), 4,4′‐Me~2~bpy (4)] and their photophysical and electrochemical properties
Photophysical and electrochemical characterization of PdII cyclometallated complexes with 2-acetylpyridine-phenylhydrazone
✍ Scribed by Gabriel García-Herbosa; Asunción Muñoz; Mauro Maestri
- Book ID
- 103994221
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 559 KB
- Volume
- 83
- Category
- Article
- ISSN
- 1010-6030
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✦ Synopsis
The absorption spectra, emission spectra, emission lifetimes and photochemical and electrochemical behaviour of six monomeric cyclometallated complexes [Pd(CNN)X14+ (where CNN is the C-deprotonated form of 2acetylpyridine-phenylhydrazone and X is I-, Cl-, CMepy, PPh,, P(QPh), P(OMe),) and two dimeric cyclometallated complexes [(CNN)Pd(XX)Pd(NNC)]*' (where XX is 4,4'-bipyridine (4,4'-bpy) or bis(diphenylphosphino)methane (dppm)) were studied. The relatively intense absorption band exhibited by the complexes at 450 nm and the luminescence emission observed at 298 and 77 K were assigned to in&a&and (IL) transitions with remarkable charge transfer character (ILCT).
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Reaction of 2-acetylpyridine 4-methylthiosemicarbazone 199 Hg-NMR spectroscopy when relevant, the ligand is N,N,Stridentate, coordinating to the metal centre through its (H4ML) with halides of zinc(II), cadmium(II), and mercury(II) afforded complexes of the form [M(H4ML)X 2 ] [M = Zn II (1-pyridine
Reaction of group 12 metal dihalides in ethanolic media with 2-acetylpyridine 4 N-phenylthiosemicarbazone (H4PL) and 2-acetylpyridine-N-oxide 4 N-phenylthiosemicarbazone (H4PLO) afforded the compounds [M(H4PL)X 2 ] (X = Cl, Br, M = Zn, Cd, Hg; X = I, M = Zn, Cd) (1±8), [Hg(4PL)I] 2 ( 9) and [M(H4PLO