Molecular rotators anchored on a rod-like anionic coordination polymer adhered by charge-assisted hydrogen bonds

Abstract

On the basis of variable-temperature single-crystal X-ray diffraction, variable-temperature/frequency dielectric analysis, variable-temperature solid-state nuclear magnetic resonance spectroscopy, and molecular dynamics simulations, here we present a new model of crystalline supramolecular rotor (i-PrNHMe₂)[CdBr₃], where a conformationally flexible near-spherical (i-PrNHMe₂)⁺ cation functions as a rotator and a rod-like anionic coordination polymer {[CdBr₃]⁻}_∞ acts as the stator, and the adhesion of them is realized by charge-assisted hydrogen bonds.