Interpenetrating metal–organic and inorganic 3D networks: a computer-aided systematic investigation. Part I. Analysis of the Cambridge structural database

Three-dimensional Euclidean nets from two-dimensional hyperbolic tilings: kaleidoscopic examples

“…Complementary to these endeavours is the study of 'crystal nets': triply periodic embeddings of graphs in three-dimensional Euclidean space. Interest in crystal nets stems from their fundamental relevance to condensed materials from atomic crystals (Wells, 1977;O'Keeffe & Hyde, 1996;Klee, 2004) to novel framework materials (Ockwig et al, 2005;Ö hrströ m & Larsson, 2005), including carbon polymorphs (Strong et al, 2004), zeolites (Treacy et al, 1997;International Zeolite Association, 2008), related oxide (Zou et al, 2008) and alumino-phosphate (AlPO) materials (Li et al, 2008), imidazolate (ZIF) frameworks (Banerjee et al, 2008) and metalcoordination polymeric materials (Blatov et al, 2004;Batten, 2001). The microdomains of some liquid-crystalline phases of soft materials, including amphiphile and copolymer assemblies and derivative mesoporous solids, are also characterized by crystal nets (Hyde & Schroeder, 2003).…”

Crystal structure of bis[2-(3,5-dimethylpyrazol-1-yl)ethyl]etherdiisothiocyanatocopper( II), Cu(C14H22N4O)(NCS)2

“…As aconsequence of its stability, it can be produced catalytically from awide various precursor organic substances [11]. On the other hand, in the past decades, kinds of supramolecular self-assemblies were directed by non-covalent intermolecular interactions such ahydrogen bonding and p-p stacking interactions have been fixed by carefully employed building blocks and linkers [12]. Therefore, to avoid inter-penetration the heterocyclic aromatic lignad 2,2'-bipyridine was introduced into the Mn-ADC system based on the following considerations: (a) the steric hindrance at the metal centers will be increased when the bulky aromatic ligand bonds to the metal ions, this reduce the dimensions of the net shaped; (b) chelating bipyridyl-like ligands may provide recognition sites for p-p stacking interactions to form interesting supramolecular motifs [13].…”

Reversible Single-Crystal-to-Single-Crystal Structural Transformation in a Mixed-Ligand 2D Layered Metal-Organic Framework: Structural Characterization and Sorption Study

“…The squarate and bipy both act as a bridging ligand with µ 1,3 -bis-monodentate and bis-monodentate coordination mode, respectively, leading the formation of a 2D layered MOF (Figure 1b) along the b axis. The 2D MOF of 1 can be viewed in a simplified way using TOPOS [54,55] as a four-connected uninodal net with the point symmetry (Schläfli symbol) {4 4 .6 2 }. Adjacent 2D layers are arranged in mutually parallel and interpenetrated manners to complete its 3D supramolecular network, which generates 1D channels along the c axis intercalated with guest water molecules ( Figure 1c).…”