✍ Scribed by Sergiusz Luliński; Janusz Serwatowski; Anna Zaczek
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Long-range couplings were observed between protons attached to c-2 and c-5 of the 4-imidazolidinone ring. Smce 45(25) has a measurable value only for a trans arrangement of H-2 and H-5, this coupling can be utilized as an easy method of identification of 4-imidazolidinone stereoisomers.
Short-and long-range effects m calculations for mfimte pcrlodlc systems (crystals) are rchtlvc. because cholcc of the umt cell LS not unquc. This choxe can be of prlmvy computational Importance when performmg calcuhtlons wIthin the Imitcncighbour approulmrtlon.
## Abstract Proton magnetic resonance spectra of several mono‐ and disubstituted benzaldehydes were studied using CW, INDOR and double resonance techniques. It was verified that substitution in the __para__ position has no effect on the long‐range coupling of the aldehydic proton with the ring prot