cg400486q_si_001.cif (59.27 kB)
Four Cd-Based Metal–Organic Frameworks with Structural Varieties Derived from the Replacement of Organic Linkers
dataset
posted on 2013-08-07, 00:00 authored by Fang Wang, Xuemin Jing, Bing Zheng, Guanghua Li, Guang Zeng, Qisheng Huo, Yunling LiuFour
three-dimensional (3D) Cd-based metal–organic frameworks
(MOFs), [Cd(pyip)(dmf)] (1), [Cd(pyip)(doa)] (2), [Cd(pyip)(pz)] (3) and [Cd(pyip)(bipy)(H2O)0.5] (4) (dmf = N,N′-dimethylformamide, doa = 1,4-dioxane,
pz = pyrazine, bipy = 4,4′-bipyridine) have been rationally
designed and systematically synthesized by using 5-(pyridine-4-yl)isophthalic
acid (H2pyip) and Cd(NO3)2·4H2O under solvothermal conditions. Compound 1 possesses
a mineral-like 3,6-connected rtl network, and compounds 2–4 exhibit a 3,5-connected interpenetrating hms network constructed with 2-fold layers and bridging coligands
pillars (doa, pz, and bipy), respectively. In compounds 2–4, doa, pz, and bipy act as pillars to extend
the distance between the two layers from 7.34 to 11.36 Å, and
the different conformations and lengths of the coligands have influenced
the angles between the bridging ligands and the layers. Additionally,
the four compounds exhibit strong luminescent emissions in the solid
state at room temperature, and the latter three compounds exhibit
robust architectures as evidenced by their permanent porosity and
high thermal stability.