Cyclic Carbonate Formation from Epoxides and CO2 Catalyzed by Sustainable Alkali Halide–Glycol Complexes: A DFT Study to Elucidate Reaction Mechanism and Catalytic Activity | Zendy

Valeria Butera | Zendy; Hermann Detz | Zendy

Open Access

Cyclic Carbonate Formation from Epoxides and CO₂ Catalyzed by Sustainable Alkali Halide–Glycol Complexes: A DFT Study to Elucidate Reaction Mechanism and Catalytic Activity

Author(s) -

Valeria Butera,

Hermann Detz

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c01572

Subject(s) - halide , catalysis , alkali metal , chemistry , carbonate , mechanism (biology) , reaction mechanism , polymer chemistry , inorganic chemistry , organic chemistry , philosophy , epistemology

We provide a comprehensive DFT investigation of the mechanistic details of CO 2 fixation into styrene oxide to form styrene carbonate, catalyzed by potassium iodide-tetraethylene glycol complex. A detailed view on the intermediate steps of the overall reaction clarifies the role of hydroxyl substances as co-catalysts for the alkali halide-catalyzed cycloaddition. The increase of iodide nucleophilicity in presence of tetraethylene glycol is examined and rationalized by NBO and Hirshfeld charge analysis, and bond distances. We explore how different alkali metal salts and glycols affect the catalytic performance. Our results provide important hints on the synthesis of cyclic carbonates from CO 2 and epoxides promoted by alkali halides and glycol complexes, allowing the development of more efficient catalysts.

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