title: Ruthenium-Based Four-Coordinate Olefin Metathesis Catalysts The authors thank the NSF for generous support of this research.
authors.affiliation: Arnold and Mabel Laboratories of Chemical Synthesis California Institute of Technology Division of Chemistry and Chemical Engineering Mail Code 164-30, Pasadena, CA 91125 (USA).
authors.initials: MS
authors.lastname: Sanford
authors.initials: LM
authors.lastname: Henling
authors.initials: MW
authors.lastname: Day
authors.initials: RH
authors.lastname: Grubbs