Artículos de revistas
Synthesis, spectral studies and X-ray crystal structure of N,N `-(+/-)-trans-1,2-cyclohexylenebis(3-ethoxysalicylideneamine) H-2(t-3-EtOsalchxn)
Fecha
2008Registro en:
JOURNAL OF MOLECULAR STRUCTURE, v.876, n.1/Mar, p.110-120, 2008
0022-2860
10.1016/j.molstruc.2007.05.043
Autor
TOZZO, Erica
ROMERA, Sandra
SANTOS, Mirian P. dos
MURARO, Marcia
SANTOS, Regina H. de A.
LIAO, L. M.
VIZOTTO, L.
DOCKAL, Edward R.
Institución
Resumen
The synthesis, spectra and X-ray crystal structure of N,N`-(+/-)-trans-1,2-cyclohexylenebis(3-ethoxysalicylideneamine) H-2(t-3-EtOsalchxn), a salen-type ligand, are reported. The Schiff base was characterized by elemental analysis, m.p., IR, electronic spectra, H-1 and C-13 NMR spectra. The spectra are discussed and compared with those of N,N`-(+/-)-trans-1,2-cyclohexylenebis(salicylideneamine), H-2(t-salchxn). The electronic and IR spectra were also resolved by deconvolution. The influence of the ethoxy group on the IR, electronic spectrum, H-1 and C-13 NMR spectra is discussed. Strong intramolecular forces are present as supported by the IR and H-1 NMR spectra and the X-ray crystal structure. An intermolecular hydrogen bond is observed and appears twice in a pair of molecules in the unit cell. (c) 2007 Elsevier B.V. All rights reserved.