Mono- and dinuclear organotin(IV) complexes for solvent free cycloaddition of CO2 to epoxides at ambient pressure

Zafar A.K. Khattak, Hussein A. Younus, Nazir Ahmad, Baoyi Yu, Habib Ullah, Suleman Suleman, Adeel H. Chughtai, Bibimaryam Moosavi, Chaemchuen Somboon, Francis Verpoort

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Novel mono- and dinuclear dimethyltin(IV) complexes were synthesized using tridentate Schiff base ligands, derived from 2-amino-2-hydroxymethyl-propane-1,3-diol and various aldehydes. These diorganotin(IV) compounds displayed good catalytic activity for solvent-free cycloaddition of CO2 to epoxides at ambient pressure. These catalysts efficiently completed the insertion of CO2 to various epoxides at low catalyst loadings (0.1-1.0 mol%) in 1-6 hours giving high values of TONs around 1000. The catalyst further usability for three continuous reaction runs in the reaction mixture gives the same activity revealing the remarkable stability of these compounds under the given reaction conditions. Therefore, organotin(IV) complexes are efficient catalysts for the synthesis of the industrially important cyclic carbonates from epoxides at ambient pressure under solvent-free conditions.

Original languageEnglish
Pages (from-to)313-318
Number of pages6
JournalJournal of CO2 Utilization
Publication statusPublished - 1 Dec 2018


  • Ambient pressure
  • COcycloaddition
  • Homogeneous catalysis
  • Organotin complexes
  • Solvent-free

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

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