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A Mixed‐Ligand Approach for a Gigantic and Hollow Heterometallic Cage {Ni 64 RE 96 } for Gas Separation and Magnetic Cooling Applications
Author(s) -
Chen WeiPeng,
Liao PeiQin,
Yu Youzhu,
Zheng Zhiping,
Chen XiaoMing,
Zheng YanZhen
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201603907
Subject(s) - magnetic refrigeration , isostructural , gadolinium , ligand (biochemistry) , crystallography , materials science , ion , metallofullerene , transition metal , metal , chemistry , magnetization , crystal structure , metallurgy , physics , magnetic field , catalysis , organic chemistry , biochemistry , receptor , quantum mechanics
Nanosized aggregations of metal ions shielded by organic ligands possessing both exquisite structural aesthetics and intriguing properties are fundamentally interesting. Three isostructural gigantic transition‐metal–rare‐earth heterometallic coordination cages are reported, abbreviated as {Ni 64 RE 96 } (RE=Gd, Dy, and Y) and obtained by a mixed‐ligand approach, each possessing a cuboidal framework made of 160 metal ions and a nanosized spherical cavity in the center. Along with the structural novelty, these hollow cages show highly selective adsorptions for CO 2 over CH 4 or N 2 at ambient temperatures. Moreover, the gadolinium analogue exhibits large magnetocaloric effect at ultralow temperatures.