Metal- and Multicarboxylate-Dependent Structural Diversity in Metal–Organic Frameworks with Acylamide-Based Ligand

Three new metal–organic frameworks, [Co2(L)2(ip)2·(H2O)4] (1), [Cu(L)(ip)·(H2O)2] (2), [Cd(µ-H2O)(L)(oip)·(H2O)3.5] (3) (ip = isophthalate, H2oip = 5-hydroxyl-isophthalate), built by acylamide-based ligand and multi-carboxylate ligand were synthesized and structurally characterized by X-ray crystallography. Complex 1 crystallizes in monoclinic space group P21, with a = 9.9171(3), b = 31.9531(10), c = 10.1780(3) A, β = 118.8270(10)°. Complex 2 crystallizes in the monoclinic space group Cc, with a = 17.7490(3), b = 9.7363(2), c = 18.1202(3) A, β = 115.0090(10)°. Complex 3 crystallizes in the monoclinic space group P21/c, with a = 9.7670(5), b = 30.3199(15), c = 10.3277(5) A, β = 102.1680(10)°. All these compounds feature 2D 44 layers with two-fold interpenetration. Herein we describe the crystal structures of [Co2(L)2(ip)2(H2O)2]·(H2O)2 (1), [Cu(L)(ip)·(H2O)2] (2), [Cd(µ-H2O)(L)(oip)·(H2O)3.5] (3) (ip = isophthalate, H2oip = 5-hydroxyl-isophthalate). All these compounds feature 2D 44 layers with two-fold interpenetration.