Transition metal carbene complexes containing a cationic...

Details Transition metal carbene complexes containing a cationic... Transition metal carbene complexes containing a cationic...

2008-04-29

2008-04-29

Harlan, Robert D. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S172000, C502S155000, C502S167000, C546S002000, C548S101000, C544S225000

Reexamination Certificate

active

11149722

ABSTRACT:
Organometallic complexes suitable as olefin metathesis catalysts are provided. The complexes are Group 8 transition metal carbenes bearing a cationic substituent and having the general structure (I)wherein M is a Group 8 transition metal, L1and L2are neutral electron donor ligands, X1and X2are anionic ligands, m is zero or 1, n is zero or 1, and R1, W, Y, and Z are as defined herein. Methods for synthesizing the complexes are also provided, as are methods for using the complexes as olefin metathesis catalysts.

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