2D Honeycomb Coordination Polymers from 2,2′-Dithiobis(pyridine N-oxide) and Bismuth(III) Halides

Two bismuth(III) coordination polymers, namely [Bi2X6(mu-dtpo)(3)](n) [X= Cl (1), Br (2); dtpo = 2,2'-dithiobis(pyridine N-oxide)], were prepared using a crystal engineering strategy and structurally characterized by X-ray crystallography. In the isostructural compounds 1 and 2 (trigonal system, space group P-3c1), fac-configured BiX3 units as nodes are joined by the C-2-symmetrical dtpo bridging ligand as spacers to generate 2D honeycomb layers with (6,3) topology. The 2D sheets stack along the [001] direction, resulting in virtually hexagonal channels parallel to this direction, which are occupied by disordered methanol and water molecules. The potential solvent area per unit cell volume is 42.2% for 1 and 44.0% for 2. [GRAPHICS] .

Automated summary

Two bismuth(III) coordination polymers were synthesized and structurally characterized, showing 2D honeycomb layers with (6,3) topology. The layers are stacked along the [001] direction, forming virtually hexagonal channels occupied by disordered methanol and water molecules. The potential solvent area per unit cell volume is 42.2% for 1 and 44.0% for 2.