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Updated: Feb 13, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Binding CO2 from Air by a Bulky Organometallic Cation Containing Primary Amines
Yang-Hui Luo1, Chen Chen1, Dan-Li Hong1
1School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , PR China.
Abstract:
The organometallic cation 1 (Fe(bipy-NH2)32+, bipy-NH2 = 4,4'-diamino-2,2'-bipyridine), which was constructed in situ in solution, can bind CO2 from air effectively with a stoichiometric ratio of 1:4 (1/CO2), through the formation of "H-bonded CO2" species: [CO2-OH-CO2]- and [CO2-CO2-OH]-. These two species, along with the captured individual CO2 molecules, connected 1 into a novel 3D (three-dimensional) architecture, that was crystal 1·2(OH-)·4(CO2). The adsorption isotherms, recycling investigations, and the heat capacity of 1 have been investigated; the results revealed that the organometallic cation 1 can be recycled at least 10 times for the real-world CO2 capture applications. The strategies presented here may provide new hints for the development of new alkanolamine-related absorbents or technologies for CO2 capture and sequestration.
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