Formation of a robust, double-walled LiMOF from an L-shaped di-substituted N-heterocyclic adamantane-based ligand

The properties of adamantane render it an attractive building block towards the synthesis of robust frameworks. This work describes the synthesis of the L-shaped 1,3-bis(3'-carboxypyridine)adamantane (L1) ligand and the corresponding Li(i), Zn(ii) and Cu(ii) frameworks. Three topologically analogous Li(i) frameworks LiMOF12, LiMOF30 and LiMOF50 are reported, with calculated solvent accessible void volumes of 46, 43 and 36%, respectively. The reaction between the carboxylate groups of L1 and the Li(i) cations resulted in the formation of Li-carboxylate rods. The Li-carboxylate rods contributed to the formation of a double-walled MOF with large, open one dimensional channels. The synergistic effect of the double wall, lithium-carboxylate rods and the adamantane core itself, resulted in the formation of a robust network stable up to temperatures of 300-350 °C and a minimum of three months stability in air. Furthermore, complexation of L1 with Cu(BF4)2·H2O and Zn(CF3SO3)2 provided a 2D → 3D interpenetrated network containing a classic dimeric copper paddle-wheel SBU, and an infinite 1D chain which extended into a 3D structure facilitated by hydrogen-bonding interactions, respectively.

Cooperative effects of metal cations and coordination modes on luminescent s-block metal–organic complexes constructed from V-shaped 4,4′-sulfonyldiphenol

Thirteen s-block metal–organic complexes with different supramolecular networks arising from the coordination modes of the ligands and properties of the metal cations have been synthesized and exhibit violet and blue luminescence in the solid state at room temperature.

Structure evolution and luminescence properties of lithium(i)–sulfonate complexes constructed from multifunctional arenedisulfonic acids

Eight new lithium(i) complexes constructed from multifunctional arenedisulfonic acids have been synthesized. The structural evolution and luminescence properties of these complexes can be attributed to the coordination modes and anion types of ligands.

1,4-Benzenedisulfonic acid (H2BDS) as terephthalic acid analogue for the preparation of coordination polymers: the examples of M(BDS)(NMP)3 (M = Mn, Fe, Co; NMP = N-methylpyrrolidone)

1,4-Benzenedisulfonic acid, the sulfo analogue of terephthalic acid, has been successfully used for building coordination polymers of Co, Mn, and Fe.