Homoleptic rare earth triaryl complexes

US9187505B2 · kind B2 · utility

Assignee

• ROCKWOOD LITHIUM GMBH · DE

Inventors

• Oliver Thomas · Bad Harzburg, DE
• Jörg Sundermeyer · Marburg, DE

Key dates

• Filing date: Aug 2, 2012
• Grant date: Nov 17, 2015
• Expiry date: Aug 2, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to chelate-stabilized homleptic triaryl compounds based on phenylphosphoranes, to methods for preparing same and to the use thereof as catalysts. According to the invention, the object is achieved by homleptic rare earth triaryl complexes of the general formula (I), where SE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; X═O, CRR′; R1, R2=phenyl; R, R′=mutually independently H, alkyl with n=10 C atoms, phenyl or trimethylsilyl.