Soluble imidazolium-functionalized coordination cages for efficient homogeneous catalysis of CO cycloaddition reactions.

A new strategy to prepare soluble homogeneous catalysts is developed by introducing imidazolium into cationic calix[4]arene-based metal-organic cages (MOCs). The soluble MOCs show high activity and recyclability in the cycloaddition reaction of CO2 without the addition of any co-catalysts. This method provides new inspiration to design highly efficient catalysts by combining the advantages of homogeneous and heterogeneous catalysis.

Modulation of the Structure and Photoluminescence of Bismuth(III) Chloride Hybrids by Altering the Ionic-Liquid Cations.

Two bismuth(III) halides hybrids with room-temperature phosphorescence (RTP), namely, [BPy][BiCl(bpym)] (, BPy = -butylpyridinium) and [EPy][BiCl(bpym)] (, EPy = -ethylpyridinium), were synthesized and characterized. Structural comparison reveals that and possess similar anionic zigzaglike chain of [BiCl(bpym)]; however, different packing modes of anion/cations and thus different weak interactions. Interestingly, the utilization of pyridinium cations with different length of alkyl chain could tune the RTP behaviors efficiently.