Complex compounds having anionic ligands containing two P donors and the use thereof in the opto-electronic field

A process for the generation of light of a certain wavelength, comprising the step of the providing a metal complex compound having a ligand containing P donors of the formula I

• in which
• R1 to R4 are, independently of one another, an atom or radical from the group comprising hydrogen, a halogen, R—, RO—, RS—, RCO—, RCOO—, RNH—, R2N—, RCONR—, and —Si(R)X(OR)3-X, where R=a C1-C40 hydrocarbon and X=1, 2 or 3, and
• E is a carbon or a boron atom, where
• an atom or radical from the group of hydrogen, halogen, —CN, R—, RO—, RS—, RCO—, RCOO—, RNH, R2N—, RCONR— and —Si(R)X(OR)3-X, where R=the C1-C40 hydrocarbon and X=1, 2 or 3, is optionally bonded to the carbon, and two radicals from the group of halogen, R—, RO—, RS—, RCO—, RCOO—, RNH—, R2N—, RCONR— and —Si(R)X(OR)3-X, where R=the C1-C40 hydrocarbon and X=1, 2 or 3, are optionally bonded to the boron.

A process for the generation of blue emission which comprises utilizing a metal complex having a compound having a ligand containing P donors of the formula I

• in which
• R1 to R4 are, independently of one another, an atom or radical from the group comprising hydrogen, a halogen, R—, RO—, RS—, RCO—, RCOO—, RNH—, R2N—, RCONR—, and —Si(R)X(OR)3-X, where R=a C1-C40 hydrocarbon and X=1, 2 or 3, and
• E is a carbon or a boron atom, where
• an atom or radical from the group with hydrogen, halogen, —CN, R—, RO—, RS—, RCO—, RCOO—, RNH, R2N—, RCONR— and —Si(R)X(OR)3-X, where R=the C1-C40 hydrocarbon and X=1, 2 or 3, is optionally bonded to the carbon, and two radicals from the group of halogen, R—, RO—, RS—, RCO—, RCOO—, RNH—, R2N—, RCONR— and —Si(R)X(OR)3-X, where R=the C1-C40 hydrocarbon and X=1, 2 or 3, are optionally bonded to the boron.