First Cu^II Diamondoid Net with 2-Fold Interpenetrating Frameworks. The Role of Anions in the Construction of the Supramolecular Arrays

Abstract

The synthesis and crystal structure of the three-dimensional coordination polymer of an angular dipyridyl ligand 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (L) and Cu(ClO(4))(2), exhibiting the first Cu(II) diamondoid network with 2-fold interpenetration, ([Cu(L)(2)(H(2)O)(2)](ClO(4))(OH)(H(2)O)(2.5))(n) (1), together with the Cu(OAc)(2) complex of L, [Cu(L)(2)(OAc)(2)(H(2)O)](H(2)O)(2)(CH(3)OH) (2), with an unexpected mononuclear structure, are reported. Crystal data for 1: tetragonal, space group I4(1)/a, a = b = 13.477(3) A, c = 46.167(13) A, Z = 8. Crystal data for 2: triclinic, space group P(-)1, a = 7.847(2) A, b = 13.189(4) A, c = 15.948(5) A, alpha = 75.225(7) degrees, beta = 79.945(6) degrees, gamma = 77.540(5) degrees, Z = 2. The magnetic properties and anion effect are also discussed.

Self‐assembly process of copper cation and 2,5‐bis(3‐pyridyl)‐1,3,4‐oxadiazole under electrospray ionization conditions

“…In the condensed phase, due to the coordination of copper cation by pyridyl nitrogen atoms, 2 yielded a complex of polymeric structure. 16 determine the effect on the formation of the 2:2 complex of the substitution of the oxygen atom by sulfur, 2,5-bis(3-pyridyl)-1,3,4-thiadiazole (3, Scheme 2) was synthesized. No 2:2 complex was formed under ESI conditions, as shown in Fig.…”

Synthesis, characterization and crystal structure of a novel 3‐D copper(II) polymer with bent N‐containing ligand

“…Many open metal-organic frameworks have been obtained using linear 4,4'-bipyridine (4,4'-bpy) and 4,4'-bipyridine-like N,N'-donor ligands [7][8][9][10]. Compared to linear N,N'-donor ligands, bent N,N'-donor ligands 2,5-bis(4-pyridylethynyl)thiophene, 2,5-bis(4-pyridyl)-1,3,4-oxadiazole and 2,5-bis(4-pyridyl)-1,3,4-thiadiazole are less frequently used as building blocks for metal-organic frameworks [11][12]. However, there is a higher possibility of obtaining the unexpected, unpredictable and interesting structure depending on the biting angle of these bent N,N'-donor ligands.…”

Syntheses and supramolecular structures of two 5‐nitrosalicylate titanocene complexes

“…In addition, the rational design of supramolecular polymeric architectures has attracted considerable interest from chemists, not only because of their intrinsic esthetic appeal, but also because of their potentially exploitable properties. 27,28 Supramolecular assemblies have received considerable attention in recent years, including onedimensional, 29,30 two-dimensional 31,32 and three-dimensional networks, 33,34 which have been synthesized by a combination of covalent bond formation and supramolecular interactions, including hydrogen bonds, π -π stacking and M · · · X (X = S, O, I) contacts. Hydrogen bonds and π -π stacking interactions are an important research content in the supramolecular chemistry and crystal engineering.…”