Spontaneously resolved chiral interpenetrating 3-D nets with two different zinc coordination polymers

Hetero-interpenetrating porous coordination polymers

Interpenetrating porous coordination polymers (IPCPs) consist of two or more networks that are mechanically interlocked to form a coherent structure. The framework topology and the chemical composition are the two important criteria of interpenetrating networks to distinguish homo-IPCPs from hetero-IPCPs. Compared to rich homo-IPCPs, hetero-IPCPs remain rare and are formed rather unexpectedly. This Frontier article highlights hetero-IPCPs in accordance with the difference and/or identity of individual networks in terms of the framework topology and the chemical composition.

A Novel Two-Dimensional Non-Interpenetrating Coordination Polymer [Ag2.5L(NO3)2.5]∞ with three different coordination modes of AgI (L = diquinoxalino[2,3-a:2′,3′-c]phenazine)

A novel 2-D AgI neutral infinite framework of a large delocalised system diquinoxalino[2,3-a:2′,3′-c]phenazine (L), [Ag2.5L(NO3)2.5]∞ (1), has been synthesised and structurally determined, in which three kinds of different coordination modes are found for the AgI centers.

Spontaneous resolution of a Δ/Λ-chiral-at-metal pseudo-tetrahedral Schiff-base zinc complex to a racemic conglomerate with C–H⋯O organized 41- and 43-helices

Weak supramolecular interactions can be decisive!

Discovery of hypothetical hetero-interpenetrated MOFs with arbitrarily dissimilar topologies and unit cell shapes

Interpenetration is a commonly observed phenomenon in metal organic frameworks (MOFs) where multiple frameworks are entangled with each other. Using a novel algorithm described here, 18 hypothetical hetero-interpenetrated MOFs were discovered.

Synthesis, structures and magnetic properties of two chiral mixed-valence iron(ii,iii) coordination networks

Two rare chiral mixed-valence iron(ii,iii) coordination networks have been synthesized through spontaneous asymmetrical crystallization from achiral units in the assembly process.

Achiral aromatic solvent-induced assembly of 3-D homochiral porous 3d–4f heterometallic-organic frameworks based on isonicotinic acid

Via induction of achiral aromatic solvents, two 3-D monochiral 3d–4f MOFs (1 and 2) from the ligand HIN without any chiral auxiliary are uncommonly constructed. And the results show homochirality of 1 and 2 are enantiopurity rather than enantiomeric excess.

Control of bulk homochirality and proton conductivity in isostructural chiral metal–organic frameworks

Two enantiomeric pairs of isostructural homochiral metal–organic frameworks (MOFs) have been synthesized directly from chiral ligands and indirectly from achiral ligandsviaspontaneous resolution combined with cooperative chirality induction, respectively.

The first two-fold interpenetrating polyoxometalate-based coordination polymer with helical channels: structure and catalytic activities

A polyoxometalate-based coordination polymer POMCP-1 with a [helix + interpenetration] double configuration was successfully isolated, which shows effective catalytic activities for the esterification reaction and the photodecomposition of Rhodamine-B.

Synthesis and characterization of robust three-dimensional chiral metal sulfates

Chiral three-dimensional Mg(ii) and Mn(ii) sulfates have been synthesized, well characterized and studied from first-principles calculations. High temperature X-ray diffraction, thermogravimetric analysis and DFT calculations reveal that the structures of both the compounds remain intact even after the thermal decomposition of the ammonium ion.