Epoxide activation by a silver phosphonate for heterogeneous catalysis of CO2 cycloaddition

Hydrothermal reaction of silver nitrate and a tetraphosphonic acid (H8L) affords a novel coordination polymer, with the general formula, [Ag10(H3L)2(H2O)2(4,4′-bipy)], denoted as compound 1. It is built from extended ⋯Ag–O–P–O⋯ chains and organic linkers to form a 3D network. In its structure, three...

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Bibliographic Details
Published in:CrystEngComm 2023-01, Vol.25 (1), p.108-113
Main Authors: Chao-Ying, Gao, Chen, Mao, Yang, Yang, Xu, Ning, Liu, Jinglin, Chen, Xiaohong, Liu, Jinghai, Duan, Limei
Format: Article
Language:English
Subjects:
Carbon dioxide
Catalysis
Catalytic activity
Coordination polymers
Cycloaddition
Hydrothermal reactions
Phosphonates
Silver nitrate
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Summary:Hydrothermal reaction of silver nitrate and a tetraphosphonic acid (H8L) affords a novel coordination polymer, with the general formula, [Ag10(H3L)2(H2O)2(4,4′-bipy)], denoted as compound 1. It is built from extended ⋯Ag–O–P–O⋯ chains and organic linkers to form a 3D network. In its structure, three of four phosphonyl groups of the organic ligand are protonated, endowing compound 1 with rich Brønsted acid sites. With Brønsted and Lewis acidic sites, the catalytic activity of 1 was investigated through cycloaddition reaction of CO2 and epoxides, and the results displayed an excellent performance. Besides, the heterogeneous nature of compound 1 was proved by five cycle experiments with no significant compromise on the activity, indicating the silver phosphonate as an excellent catalyst for CO2 chemical fixation.
ISSN:1466-8033
DOI:10.1039/d2ce01240e