Metal organic compounds

A compound of formula 1

• wherein
• R1 and R2 are identical or different and are selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl and substituted or unsubstituted heteroaryl;
• D can be part of a C2 to C4 bridge that can be saturated or unsaturated, substituted or unsubstituted, with bridge carbon atoms being able to be replaced by heteroatoms;
• R3, R11 and R12 may be the same or different and can be hydrogen, substituted or unsubstituted aryl, heteroaryl, alkyl, alkenyl, alkynyl or combinations thereof.
• R10 and R20 can be hydrogen or form a substituted or unsubstituted, unsaturated ring, which may be fused with further rings;
• or to each other to form a ring
• X and Y may be the same or different and are anionic ligands.