New Examples of Metal Coordination Architectures of 4,4′‐Sulfonyldibenzoic Acid: Syntheses, Crystal Structure and Luminescence

Abstract

Seven metal-organic coordination polymers, namely [Cd(sfdb), and [Cd(sfdb)(bpy)] n (7) [H 2 sfdb = 4,4Ј-sulfonyldibenzoic acid, phen = 1,10-phenanthroline, quin = 2,2Ј-biquinoline, bpy = 2,2Ј-bipyridine] have been synthesized according to the principles of crystal engineering and structurally characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction analyses. Compounds 1-3 form 1D zigzag chains. Two phen ligands chelate to one cadmium atom in 1, which is rare in similar polymers, while two 2,2Ј-bpy ligands coordinate one cadmium atom in 2. The zigzag chains in 3 propagate in two different directions (rotated by 75°) that are assembled by supramolecular forces

Photocatalytic Reduction and Recognition of Cr(VI): New Zn(II)-Based Metal–Organic Framework as Catalytic Surface

“…As expected, the newly synthesized Zn-MOF was found to display bright green emission due to the presence of Zn­(II) and a rigid aromatic backbone with extended conjugation. The UV–vis profile of Zn-MOF (30 μM) showed an intense absorption band around 366 nm (Figure S6), while it exhibited bright green fluorescence at 515 nm upon excitation at 370 nm (Figure ) due to ligand-to-metal charge-transfer (LMCT) transitions. , Stokes shift of Zn-MOF were found to be 145 nm. A large Stokes shift ensured the separation between the excitation and emission spectra, which in turn ruled out the possibility of reabsorption of emitted photons (Figure S7).…”

Crystal structure of 4,4′-sulfonyldipyridine, C10H8N2O2S

“…In contrast, the analogous ones bearing a SO 2 (sulfonyl) hinge group are rarely reported. There are several examples reported in the literature, such as sulfonyldiacetylide [2], sulfonyldiyne [1], sulfonyldicarboxylate [3,4] and bis[3-(2-pyridylmethyleneamino)-phenyl] …”

Crystal structure of 4-(pyridin-4-ylmethylsulfonyl)pyridine, C11H10N2O2S

“…There are several analogous ones featuring the sulfonyl group (−SO 2 −), such as sulfonyldiacetylide [2], sulfonyldiyne [1], sulfonyldicarboxylate [3,4] and bis[3-(2-pyridylmethyleneamino)-phenyl]sulfone [5], which are rationally used as versatile semi-rigid ligands to construct …”