The Charm of Subtle H-Bonds Transformations

Hydrogen bonds and polymerization in acrylamide under pressure

“…Hydrogen-bonded materials are found to undergo pressure-induced structural changes with a wide range of variations in hydrogen bonds, from subtle rearrangements in the hydrogen bonding networks to drastic changes such as making and breaking of hydrogen bonds, proton disorder, symmetrization, etc. [1][2][3][4][5][6][7][8][9] In the case of molecular solids with high carbon-to-hydrogen ratio, unsaturated bonds of the molecules tend to be saturated by linking to each other resulting in polymerization. Pressure-induced polymerization can therefore be a promising alternative to synthetic chemical routes as there is no need of any initiator or solvent, and one can obtain polymerization without any impurities.…”

“…Compression of materials facilitates close packing, molecular reorientations and rearrangements, and consequent variations in the nature of chemical bonding which can result in new structures and properties. Hydrogen‐bonded materials are found to undergo pressure‐induced structural changes with a wide range of variations in hydrogen bonds, from subtle rearrangements in the hydrogen bonding networks to drastic changes such as making and breaking of hydrogen bonds, proton disorder, symmetrization, etc . In the case of molecular solids with high carbon‐to‐hydrogen ratio, unsaturated bonds of the molecules tend to be saturated by linking to each other resulting in polymerization.…”