Synthesis, structure and properties of the first hybrid Bi2Cl93− supramolecular compound based on macrocyclic rotator-stator assembly

The first hybrid Bi(III) supramolecular compound based on organic ammonium and 18-crown-6, [(4-FBNH3)3·(18-crown-6)3·(Bi2Cl9)] (1), has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis, IR, XRPD and 1H NMR (4-FBNH3 = 4-fluorobenzenaminium). The Bi(III) centers were chelated through three μ2-Cl donors to form a macro-anion (Bi2Cl9)3− unit. And the rotator-stator assembly, [(4-FBNH3)·(18-crown-6)]+, was formed by the 4-FBNH3+ cation inserting into the crown ether through strong NH…O H-bonding interactions. The large anions and rotator-stator cations were alternately stacked together to build the supramolecular functional compound. In addition, the thermal analysis and luminescent properties were investigated.

The first hybrid Bi(III) supramolecular compound based on macrocycle has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis, IR, XRD, 1H NMR, DSC and fluorescence properties. The Bi(III) centers were chelated through three μ2-Cl donors to form a macro-anion (Bi2Cl9)3− unit. And the rotator-stator assembly, [(4-FBNH3)
• (18-crown-6)]+, was formed by the cations inserting into the crown ether through strong NH…O H-bonding interactions. The large anions and rotator-stator cations were alternately stacked together.Figure optionsDownload as PowerPoint slideHighlights
► The first hybrid Bi(III) supramolecular compound based on macrocyclic rotator-stator assembly.
► The rotator-stator assemblies were formed by the cations inserting into the crown ether.
► The Bi(III) centers were chelated through three μ2-Cl donors to form a macro-anion (Bi2Cl9)3− unit.