Spontaneously resolved 3D homochiral In(III) coordination polymer with extended In-OH-In helical chains

The hydrothermal reaction of In(III) and pyridine-3,5-dicarboxylic acid in the presence of triethylamine leads to a generation of novel 3D homochiral coordination polymers with In-OH-In helical chains. Interestingly, the resulting crystals were not a racemic mixture but had an enantiomeric excess, which was confirmed by the measurement of optical rotation of bulk samples using solid state vibrational circular dichroism (VCD) spectra.