Two coordination polymers constructed from a multidentate carboxylic acid ligand with a tertiary amine serve as acid–base catalysts for the synthesis of chloropropene carbonate from CO₂ under atmospheric pressure

Abstract

Two new coordination polymers, [Ni(H2O)(Hpdcd)(H2O)2]·DMF (1) and [Co(H2O)(Hpdcd)(H2O)2]·DMF (2) (H3pdcd = 1-(4-carboxyphenyl)-2,5-dimethyl, 1H-pyrrole-3,4-dicarboxylic acid), which were designed based on a tertiary amine ligand, were synthesized and characterized using multiple spectroscopy techniques, including single-crystal X-ray diffraction. These two 1D linear chains possess the properties of both a Lewis acid and organic base, which was confirmed by temperature programmed desorption of ammonia and on-line mass spectrometry (NH3-TPD-MS), and selective sorption for carbon dioxide. Due to their acid-base properties, the compounds exhibited high catalytic activity, in the absence of co-catalysts, for solvent-free synthesis of chloropropene carbonate from CO2 and epichlorohydrin under atmospheric CO2 pressure. The yields of chloropropene carbonate were 88% and 87% for 1 and 2, respectively, under the optimized conditions.

Exceptionally Robust In-Based Metal–Organic Framework for Highly Efficient Carbon Dioxide Capture and Conversion

“…Moreover, the IR spectra of 1 also confirmed that the structural integrity of 1 was well maintained after the catalytic experiments (Figure S8). A new peak appeared at around 1788 cm –1 , which was ascribed to the new generation of the carbonyl group in cyclic carbonate . Thanks to its high thermal and chemical stability, the recovered 1 could maintain the integrity of the structure after catalysis.…”

Combination of binary active sites into heterogeneous porous polymer catalysts for efficient transformation of CO2 under mild conditions

“…A number of homogeneous [14][15][16][17][18][19][20] and heterogeneous [21][22][23][24][25][26][27][28][29][30][31] catalysts have been developed for the cycloaddition of CO2 with epoxides. Among them, binary catalytic systems, composed of metal complexes as the catalyst and ammonium salts as the co-catalyst, were found to greatly promote the transformation of CO2 under ambient conditions by the synergy of the Lewis-acidic active sites and Lewis-basic nucleophilic centers [32].…”

Synthesis, magnetism and spectral studies of six defective dicubane tetranuclear {M4O6} (M = NiII, CoII, ZnII) and three trinuclear CdII complexes with polydentate Schiff base ligands

“…[19][20][21][22] Using polydentate ligands, which possess multiple N and O donors, has always been a wise choice to construct versatile multinuclear architectures because of their rich coordination patterns, steric effect and electronic effect. [23][24][25][26][27] In this respect, Schiff bases are good candidates and have been widely used in the synthesis of polynuclear complexes due to their good coordination capacity. [28][29][30][31] Owing to their excellent physical, chemical and biological properties, simple synthesis, low cost and versatile applications in various fields, Schiff bases have been quite well studied.…”