Persistent Honeycomb Structures in Porous and Other Two-Component Solids

Abstract

Predicting three‐dimensional structure based on the individual components of hybrid structures remains one of the greatest challenges of crystal engineering; however, progress is reported here: For 21 different systems the crystallization of phenylacetylene nitriles with silver triflate salts leads to the same basic hexagonal honeycomb structures (see Figure). A rationalization based on interface minimization is proposed.

Synthesis, crystal structure and third-order non-linear optical properties of two-dimensional supramolecular polymer [Co2(μ2-4,4′- bipy)2(μ2-be)2(be)2]n

“…The 2D structure is built from the linkage of secondary building units of binuclear [Co 2 (l 2 -4,4 0 -bipy) 2 (l 2 -be) 2 (be) 2 ] clusters by a mixed connector of 4,4 0 -bipyridine and benzoate. The third-order non-linear optical (NLO) properties of the 1 were also investigated and they exhibit the reverse saturable absorption and self-defocusing performance with modulus of the hyperpolarizability (c) 8.30 · 10 À30 esu for 1 in a 2.70 · 10 À4 mol dm À3 DMF solution.Recently, much attention has been devoted to the design and synthesis of metal-organic polymers having 1D, 2D or 3D structure, for their potential applications in the preparation of NLO materials, catalysis, sensor materials and coatings [1][2][3][4][5][6][7]. So far most of the high dimensional networks are not purely bridged by one ligand.…”

“…Recently, much attention has been devoted to the design and synthesis of metal-organic polymers having 1D, 2D or 3D structure, for their potential applications in the preparation of NLO materials, catalysis, sensor materials and coatings [1][2][3][4][5][6][7]. So far most of the high dimensional networks are not purely bridged by one ligand.…”

A Bumper Crop of Boiling-Water-Stable Metal–Organic Frameworks from Controlled Linker Sulfuration

“…Variable pore size, variable chemical functionality, and reactivity in the crystalline medium remain major incentives in the pursuit of the diverse solids of metal–organic frameworks (MOFs). − The modular nature of MOF structures was highlighted in the earlier silver-nitrile ,− and Zn­(II)-carboxylate networks as well as the currently thriving Zr­(IV)-based system initiated by Lillerude. − In these studies, the size and shape of the linker backbone are systematically varied to effectively impact the net topology and pore features. − On the other hand, the attachment of secondary groups (e.g., side chains) opens up intriguing horizons for novel functions and properties in the well-defined porous medium of MOF crystals. − Besides topical areas such as catalysis − and environmental remediation, − side chain groups, by sheer volume, occupy the void space so as to fine-tune the microporous features. To optimize the performances of MOF solids, it is desirable to develop versatile linker systems that can be conveniently modified in the number and function of the secondary groups.…”