Abstract
Understanding how and why molecular building blocks assemble into bulk structures is difficult because no unified theory for three-dimensional crystal structure prediction yet exists. Therefore, constructing a mini-library based on systematically modifying a small set of supramolecular building blocks provides an attractive approach for experimentally determining how building block geometry affects bulk structure(s). Here, rigid diamide-containing medium-sized ring systems were used to construct a solid-state hydrogen-bonded mini-library that was structurally screened via X-ray crystallography. Unlike most amides, ring-constrained amides are locked into a cisoid two-point hydrogen-bonding motif reminiscent of a DNA base pair. Three different cisoid-diamide ring systems were investigated: a six-membered diketopiperazine; a seven-membered diketobenzodiazepine; and an eight-membered diketodibenzodiazocine. Five crystal structure determinations were carried out to establish the different possible hydrogen-bo...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
