3D heterometal-organic frameworks based on oxydiacetic acid

Using the flexible ligand, oxydiacetic acid (H(2)oda), three heterodimetallic coordination polymers, {[La-2(oda) Zn-6(3)(H2O)(6)]center dot 6H(2)O}(n) (La-Zn), {[La(oda)(3)Mn](2)[Mn(H2O)(6)]center dot 6H(2)O} n (La-Mn), and {[La2Pb(oda)(4)(H2O)(4)]center dot 4H(2)O}(n) (La-Pb) were synthesized and structurally characterized. La-Zn possesses a highly ordered 3D structure with nano-sized hexagonal channels. La-Mn represents a kind of anionic porous framework, which is rare in zeolite-like 3D HMOFs. La-Pb is the first example of 6p-4f HMOFs. The framework consists of both left-handed and right-handed helices. Thermal and porosity properties of the three complexes were preliminary studied.