Absorption of Atmospheric CO2 as Carbonate Inside the Molecular Cavity of a New Tripodal Hexaurea Receptor

作者：Pramanik Avijit; Khansari Maryam Emami; Powell Douglas R; Fronczek Frank R; Hossain Md Alamgir^*

来源：Organic Letters, 2014, 16(2): 366-369.

DOI：10.1021/ol403186k

A new hexaurea receptor has been synthesized, which absorbs atmospheric CO2 to produce an air-stable solid carbonate complex under normal conditions. Structural analysis of the carbonate complex with this receptor suggests that the carbonate is fully encapsulated within its highly organized intramolecular cavity via 12 strong NH center dot center dot center dot O bonds in the range of 2.703(3)-2.989(3) angstrom from six urea units, with each anionic oxygen coordinated via four NH center dot center dot center dot O bonds with two urea groups.

• 出版日期2014-1-17