71150-49-7Relevant articles and documents
SYNTHESIS, STRUCTURE, AND PROPERTIES OF COMPOUNDS WITH CHALCOGEN-NITROGEN BONDS. XV. INFLUENCE OF THE TYPE OF CHALCOGEN ATOM ON THE STRUCTURE AND PROPERTIES OF N-ACYLCHALCOGENIMIDES
Naddaka, V.I.,Kompan, O.E.,Avanesyan, K.V.,Knyazev, A.P.,Struchkov, Yu.T.,Karapetyan, A.A.
, p. 1340 - 1346 (2007/10/02)
X-ray crystallographic examination of N-(trichloroacetyl)-di-(p-methoxyphenyl)tellurimide has shown that the contribution of bipolar resonance structures in the ground state of N-acylchalcogenimides increases on passing from sulfimides to tellurimides.The foregoing compound exists in the crystal solely as the Z-isomer.Based on this observation, an assignment was carried out of the E- and Z-isomers of N-acyltellurimides, which differ in the positions of the carbonyl stretching vibrations in the IR spectra.The mass spectrometric fragmentation of N-(trihaloacetyl)tellurimi des has been studied.In contrast to sulfur and selenium imides, the mass spectra of these compounds show strong molecular ion peaks which are apparently formed by skeletal rearrangement involving migration of a halogen atom from the trihalomethyl group to the positively-charged chalcogen.
