Long-range Supramolecular Synthon Polymorphism: A Case Study of Two New Polymorphic Cocrystals of Ph2Te2 – 1,4-C6F4I2

Along with the reported earlier co-crystal of diphenyl ditelluride (Ph2Te2) and halogen bond donor 1,4-diiodo-tetrafluorobenzene (p-DITFB) 1α, its two new polymorphic forms (1β and 1γ) present a rare case of...

Crystals at a Carrefour on the Way through the Phase Space: A Middle Path

Multiple supramolecular functionalities of cyclic α-alkoxy tellurium-trihalides (including Te---O, Te---X (X = Br, I) and Te---π(C=C) supramolecular synthons) afford rich crystal packing possibilities, which consequently results in polymorphism or Z’ > 1 crystal structures. Example of three crystal forms of cyclohexyl-ethoxy-tellurium-trihalides, one of which combines the packing of two others, affords a unique model to observe the supramolecular synthon evolution at the early stages of crystallization, when crystals on the way find themself at a carrefour between the evolutionally close routes, but fail to choose between two energetically close packing patterns, so taking the “middle path”, which incorporates both of them (and results in two crystallographically independent molecules). In general, this allows a better understanding of the existing structures, and an instrument to search for the new polymorphic forms.

Validation of the supramolecular synthon preference through DFT and physicochemical property investigations of pyridyl salts of organo-sulfonates

Understanding of the supramolecular synthon competition is sparse and the synthon hierarchy studies are limited. Herein, we validate the synthon preferences in multi-functional organic precursor through DFT and crystallographic studies.

Enhanced photoinduced mass migration in supramolecular azopolymers by H-bond driven positional constraint

SRG inscription on azopolymers films is strongly enhanced by constrained azobenzene–chain interaction established through double H-bond supramolecular synthon. Selective removal of azobenzene from patterned samples is possible by solvent rinse.

Unleashing the shape of L-DOPA at last

Herein, we report the first rotational study of neutral L-DOPA, an extensively used supramolecular synthon and an amino acid precursor of the neurotransmitters dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline) using...

2D cocrystal engineering: switching the robust carboxylic acid-pyridine supramolecular heterosynthon via oriented external electric field

The cocrystal engineering strategy has been widely employed in the fabrication of functional organic structures and materials. In this respect, the supramolecular synthon concept exemplifies a retrosynthetic approach that may...