Iridium (I) and Platinum (II) Complexes with Cyanine Dye Base Ligands

Abstract

+ 2 mi Eisessig; b) Cu2+: 100 ml Tetrahydrofuran + 0,5 mi konz. HCI. -Nachweis: a ) : Na+ 1,5proz. Losung von Violursaurc in H,O; b) Cu2+: verd. NH, und 0,lproz. Losung von Rubeanwasserstoffsaure in Alkohol.Wir danken dem Schweizerischen NationaZfonds zur Forderung der wissenschaftlachen Forschung fur die Unterstutzung diescr Arbeit. LITERATURVERZEICHNIS[l] H .Summary. The preparation of cyanine dyes by coordination of cyanine dye bases with transition metals is described. Thc significance of these complexcs for the realization of an excitonic high tempcrature superconductor is discusscd.

One‐Dimensional Inorganic Complexes

“…Although this substance reacts with amines forming IrI(CO)z(amine)Cl complexes (267) as does the 11fCo)~-C1 prepared by either the Heiber or Fischer groups (10,54,185,283,420), this material does not sublime in a stream of CO and possesses absorptions at 2140 and 2070 cm-l(vco), suggesting that these substances are not identical.…”

“…Winkler and Mayer (420) have attempted to prepare derivatives of the type IrL(C0)2(Cl) which contain highly polarizable ligands, L = 9, 20, and 22, in an attempt to experimentally realize Little's excitonic superconductor (268,269,429). These materials, [IrL(C0)2Cl] (L = 9-22), were shown via twoprobe measurements on pressed pellets to have conductivities in the range of insulators, O25O0C 5 52-l cm-I (420). The low conductivities of these materials are probably due to the lack of metal-metal interaction in the solid state because the ligands used were are bulky and hinder close approach.…”