The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
Aug. 02, 2012
Nina Hillesheim, Marburg, DE;
Jörg Sundermeyer, Marburg, DE;
Nina Hillesheim, Marburg, DE;
Jörg Sundermeyer, Marburg, DE;
Rockwood Lithium GmbH, Frankfurt am Main, DE;
Abstract
The invention relates to η:η-cyclopentadienylidene-phosphorane constrained geometry complexes of rare earth metals, abbreviated to η:η-CpPC-CGC, method for production and use of same. The η:η-CpPC-CGCs correspond to the general formula (1), wherein SE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; X=independently of one another, a mono-anionic diorganoamido-, bistrimethylsilylamido-, halogenido-, alkyl-, aryl-, alkoxo-, aryloxo- or alkylaluminate (AlR) substituent; L=neutral ligand (PR, NR, pyridine), solvent molecule (THF, ether, DMF, DMSO, HMPT, tetrahydropyran THP, tetrahydrothiofuran THT); R=alkyl with up to 1-10 C atoms or mono- or polycyclical aryl with 6 to 20 C atoms; R, R=independently of one another H or methyl; R, R=independently of one another, H or methyl or tertiary butyl or together a substituted cycloalkyl group; R, R=methyl, n-butyl, tertiary butyl or phenyl; R, R=independently of one another H, trimethylsilyl, alkyl with 1-10 C atoms or mono- or polycyclical aryl with 6 to 20 C atoms, and m=0, 1, 2 or 3.