2 meth oxy aniline

Chemicals and reagents were purchased from commercial sources. 2-Hy­droxy­benzaldehyde, 2-meth­oxy­aniline and an­hydrous M^II halides, where M is Zn, Cd and Hg, were pur­chased from Sigma–Aldrich and Merck, and used as received. The Schiff base ligand 2-{[(2-meth­oxy­phen­yl)imino]­meth­yl}phenol (L) was prepared according to a previously reported method (Song et al., 2013 ▸ ). The IR spectra were recorded on a Nicolet FT–IR 100 spectrometer in the range 500–4000 cm⁻¹ using the KBr disk technique. Elemental analyses (C, H and N) were performed using an ECS 4010 CHN-O made in Costech, Italy. Melting points were measured by an Electrothermal 9100 melting-point apparatus and corrected. The measurements were carried out using 10 mg of a powdered sample sealed in aluminium pans with a mechanical crimp.

For our investigation, we used the same compounds as for Paper-LTPI^{28 (link)} and in a comparison between Paper-LTPI, ESI and APCI^{27 (link)}: 3-aminophenol, 2-fluoroaniline, 3-fluoroaniline, 4-fluoroaniline, 2-methoxyaniline (o-anisidine), 3-methoxyaniline (m-anisidine), 4-methoxyaniline (p-anisidine), 2-nitroaniline, 3-nitroaniline, 4-nitroaniline, 3-methylaniline (m-toluidine), 3-aminoaniline (m-phenylenediamine), 4-aminoaniline (p-phenylenediamine), 2-aminobenzonitrile, 3-aminobenzonitrile and 4-aminobenzonitrile from Sigma Aldrich (Taufkirchen, Germany); 2-methylaniline (o-toluidine), 4-methylaniline (p-toluidine) from Fluka (Buchs, Switzerland) and aniline from Acros (Geel, Belgium). Acetonitrile (ACN, LC–MS grade) was from VWR (Dresden, Germany) and water (LC–MS grade) from BIOSOLVE (Valkenswaard, Netherlands). 2-aminoaniline (o-phenylenediamine), 2-aminopyridine, 3-aminopyridine, 4-aminopyridine, 2-aminophenol, 4-aminophenol, 2-aminobenzoic acid, 3-aminobenzoic acid, 4-aminobenzoic acid, sulfanilic acid and 4-chloroaniline were kindly provided by Prof. em. S. Berger (University of Leipzig, Germany).