Patent ID: 7635526

Claim:
A compound of the formula (I) or (II) wherein M is Rh or Ir; Z is identically or differently on each occurrence, N or CR; Y is O, S or Se; R is identically or differently on each occurrence, H, F, Cl, NO 2 , CN, a straight-chain or branched or cyclical alkyl or alkoxy group with 1 to 20 C atoms, whereby one or more non-neighbouring CH 2 groups can be replaced by —O—, —S—, —NR 1 —, or —CONR 2 — and whereby one or more H atoms can be replaced by F, or an aryl or heteroaryl group with 4 to 14 C atoms, which can be substituted by one or more non-aromatic radicals R; whereby several substituents R, both on the same ring as well as on the two different rings together, can in turn set up a further mono- or poly-cyclical ring system; R 1 and R 2 are identically or differently on each occurrence, H or an aliphatic or aromatic hydrocarbon radical with 1 to 20 C atoms; n is 1, 2 or 3; with the proviso that the compounds of formula (I) do not include compounds of the following formula: