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View Generic Document: Propylene Oxide Polymerization Using Strapped Salph Co(III) Catalysts Citation: Thomas, Renee (2005). Propylene Oxide Polymerization Using Strapped Salph Co(III) Catalysts. Cornell Center for Materials Research. Collection: Cornell Center for Materials Research REU Program     Attached Files Name Description MIMEType Size Downloads n2005_CCMR_REU_Thomas.pdf   n2005_CCMR_REU_Thomas.pdf application/pdf 92.13KB 0 Title Propylene Oxide Polymerization Using Strapped Salph Co(III) Catalysts Author(s) Thomas, Renee Keyword(s) polypropylene oxide cobalt catalysts propylene oxide polymerization synthesis Abstract/Summary The object of this project was to screen strapped (salph)Co (Salph= N,N’-bis(3,5-ditert-butyl salicylidine-1,2-benzenediamine)) catalysts for propylene oxide polymerization. Since the monomeric (salph)Co catalyst polymerized propylene oxide to highly isotactic PPO and the oligomeric [(salen)Co] catalysts gave such high regio- and stereospecific epoxide ring openings, it was thought that strapped (salph)Co catalysts might give high regio- and stereospecific propylene oxide polymerization. Also, since the mechanism of propylene oxide polymerization is believed to be bi-metallic, comparison of the strapped bi-metallic (salph)Co catalysts to the monomeric (salph)Co catalyst was of interest. The carbon chain lengths of the strap were varied to compare the activity of (salph)Co catalysts to the strap lengths. Publisher Cornell Center for Materials Research Date 2005-08-17 Copyright Notice Copyright 2006 CCMR. Materials from the CCMR website may not be used without permisson. Copyright Agreement on Additional Notes Acknowledgements: This work was supported by the Cornell Center for Materials Research and the National Science Foundation   User Comments   Created: Sat, 23 Sep 2006, 06:09:27 EST Detailed History

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