Citation: Jingui Duan; Masakazu Higuchi; Maw Lin Foo; Satoshi Horike; Koya Prabhakara Rao; Susumu Kitagawa (2013). A Family of Rare Earth Porous Coordination Polymers with Different Flexibility for CO2/C2H4 and CO2/C2H6 Separation. Inorganic Chemistry, 52, pp. 8244-8249.