Metallkomplexe von Farbstoffen — Übergangsmetall-Komplexe mit 2-(1,3-Dioxo-2-indanyliden)benzimidazolinen

✍ Scribed by Schmidt, Christoph ;Polborn, Kurt ;Beck, Wolfgang

• Publisher: Wiley (John Wiley & Sons)
• Year: 1992
• Tongue: English
• Weight: 581 KB
• Volume: 125
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19921250111

✦ Synopsis

Benzimidazoline, 2-( 1,3-diox0-2-indanylidene)-, as chelate ligand / Copper complexes / Nickel complexes 1 Palladium complexes / Platinum complexes Metal Complexes of Dyes -Transition Metal Complexes of Monoand Dianions of 2-(1.3-Dioxo-2-indanylidene)benzimidazolines 2-( 1,3-Dioxo-2-indanylidene)benzimidazolines (L) (1 -6) react with metal salts and chloro-bridged complexes in the presence of NaH to give the mono and bis-NO-chelate complexes (L -H+)2M (M = Cu, Pd, Ni) (7-9), (L -H+)M(PR,)Cl (M = Pd, Pt; 10-15 and (L -2H+)[Pt(PEt,)C1l2 (16, 17). The electronic spectra of the bis(che1ate) complexes show a large batho-chromic shift of the absorptions in the visible region as compared to the free ligands. The structures of (L -H+)Pd(Cl)-(PnBu,) (10) and of (L -2Hf)[Pt(C1)PEt3)l2 (16) have been determined by X-ray crystallography. The two heterocyclic planes in 16 are bent along the elongated central C = C bond [143.2(12)pm] which gives a hip-roof-like structure.