18-Fold Interpenetration and Concomitant Polymorphism in the 2:3 Co-Crystal of Trimesic Acid and 1,2-Bis(4-pyridyl)ethane

Abstract

The 2:3 co-crystal of trimesic acid and 1,2-bis(4-pyridyl)ethane (2) exhibits concomitant polymorphism. Form II of 2 is the expected hexagonal (6,3) network, whereas form I is a (10,3)-a network that exhibits an unprecedented 18-fold level of interpenetration.

Crystal structure of hydrogen methyl ether perchlorate — 1,3-bis(4- pyridyl)propane (1:1), [C2H7O][ClO4] ·C13H14N2

“…Ar easonable synthetic approach to build such materials through careful selection of organic molecules containing functional groups which self-assemble in the solid state as well as well-known molecular synthons (usually based on intermolecular hydrogen bonds), makes it possible to predict some supramolecular motifs such as tapes, sheets or even three-dimensional networks [4][5][6]. In this regard, N,N'-donor spacer ligands such as 1,2-bis(4-pyridyl)ethane (bpa) and 1,3-bis(4-pyridyl)propane (bpp) are used in both branches of crystal engineering since, apart from its rod-like characteristics, the gauche and anti conformations which may induce supramolecular isomerism in coordination compounds.…”

“…In this regard, N,N'-donor spacer ligands such as 1,2-bis(4-pyridyl)ethane (bpa) and 1,3-bis(4-pyridyl)propane (bpp) are used in both branches of crystal engineering since, apart from its rod-like characteristics, the gauche and anti conformations which may induce supramolecular isomerism in coordination compounds. With this ligand, a large number of novel networks of ingenious design have been constructed [4][5][6][7][8][9]. In particularly, there has been much interest in the rational design and synthesis of cocrystals assemblied with bpa or bpp component [7][8][9].…”

Assembly, crystal structure, and luminescent properties of three-dimensional (10,3)-a netted rare earth coordination polymers

“…However, many obtained porous structures are often accompanied with interpenetration, thus influencing the applications of the porous property. Until now, many of reported (10,3)-a net structures are interpenetrated [28][29][30][31][32][33] . It is noteworthy that the complexes reported here are non-interpenetrated.…”

Non-covalent bonded 2D–3D supramolecular architectures based on 4-dimethylaminopyridine and organic acids

“…Numerous heterodimers composed of organic acids and a variety of N-containing basic building blocks have been documented recently [10][11][12][13][14].…”