Patent ID: 8258297
Filing Date: 2012-09-04
Classification: C07F,C09K,H05B

Abstract:
1. A cyclometalated carbene complex of the general formula (I) in which the symbols are each defined as follows: M is a metal atom selected from the group consisting of metals of group IB, IIB, IIIB, IVB, VB, VIIB, VIIB, VIIIB, the lanthanides and IIIA of the Periodic Table of the Elements (CAS version) in any oxidation state possible for the appropriate metal atom; K is an uncharged mono- or bidentate ligand; L is a mono- or dianionic ligand; X is CR Y is NR A, D, G, E, A′, D′, G′ and E′ are each independently CH, CR R R are each independently substituted or unsubstituted C or two adjacent R or the R R are each independently H, substituted or unsubstituted C n is a number of carbene ligands, where n is at least 1 and the carbene ligands in the complex of the formula I, when n>1, are the same or different; m is a number of ligands K, where m is 0 or ≧1, and the ligands K, when m>1, are the same or different; o is a number of ligands L, where o is 0 or ≧1, and the ligands L, when o>1, are the same or different; where the sum of n+m+o depends on the oxidation state and coordination number of the metal atom used and on the denticity of the ligands L and K, and also on the charge of the ligand L, with the condition that n is at least 1.