Coordination‐directed and Hydrogen‐bonded Assembly of Supramolecular Architectures Constructed from Diverse Coordination of Linear, Triangular, Tetragonal Pyramid, Trigonal Bipyramid, and Octahedral Mononuclear Units

Abstract

Reaction of a imidazole phenol ligand 4‐(imidazlo‐1‐yl)phenol (L) with 3d metal salts afforded four complexes, namely, [Ni(L)6]·(NO3)2 (1), [Cu(L)4(H2O)]·(NO3)2·(H2O)5 (2), [Zn(L)4(H2O)]·(NO3)2·(H2O) (3), and [Ag2(L)4]·SO4 (4). All complexes are composed of monomeric units with diverse coordination arrangements and corresponding anions. All the hydroxyl groups of monomeric cations are used as hydrogen‐bond donors to form O–H···O hydrogen bonds. However, the coordination habit of different metal ions produces various supramolecular structures. The NiII atom shows octahedral arrangement in 1, featuring a 3D twofold inclined interpenetrated network through O–H···O hydrogen bond and π–π stacking interaction. The CuII atom of 2 displays square pyramidal environment. The O–H···O hydrogen bond from the [Cu(L)4(H2O)]2+ cation and lattice water molecule as well as π–π stacking produce one‐dimensional open channels. NO3– ions and lattice water molecules are located in the channels. 3 is a 3D supramolecular network, in which ZnII has a trigonal bipyramid arrangement. Two different rings intertwined with each other are observed. The AgI in 4 has linear and triangular coordination arrangements. The mononuclear units are assembled into a 1D chain by hydrogen bonding interaction from coordination units and SO42– anions.