Patent ID: 8597798
Filing Date: 2013-12-03
Classification: C07F,C09B,C09K,H01L,H05B,Y02E

Abstract:
1. A compound of the general formula I or of the general formula II wherein M is a metal ion in oxidation state +2, Ar, is, identically or differently on each occurrence, an aromatic or heteroaromatic ring system having 5 to 10 aromatic ring atoms, which is optionally substituted by a plurality of radicals R, R is, identically or differently on each occurrence, H, D, F, Cl, Br, I, N(Ar Ar Y is, identically or differently on each occurrence, C, N or P, with the proviso that either two C atoms and two N atoms or two C atoms and two P atoms are always bonded to the metal, and R R