Structural studies of N-(2′-substituted phenyl)-9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximides by X-ray diffraction and NMR spectroscopy—proofs for CH/π interactions in liquid and solid phases
作者:Gisbert Grossmann、Marek J. Potrzebowski、Sebastian Olejniczak、Natasza E. Ziółkowska、Grzegorz D. Bujacz、Wlodzimierz Ciesielski、Wiktor Prezdo、Valerii Nazarov、Vladislav Golovko
DOI:10.1039/b300759f
日期:——
weak intermolecular CH/π contacts were found in 2 and 3, while anti and syn conformations coexist in 1 with CH/π contacts being absent. Solid-state 13C CP/MAS spectra confirm the X-ray molecular structural data. Two crystallographically independent molecules in the unit cell of 2 correspond to two isotropic chemical shifts for C atoms in the CP/MAS spectrum. The different molecular dynamics of both