title: Microwave assisted stereoselective synthesis of cis-substituted TinIV phthalocyanine dicarboxylates. application as corrosion inhibitors.
abstract: Two PcSn(IV) dicarboxylate molecules were obtained through efficient microwave methodology with the aim to test them as corrosion inhibitors in the oil industry. The compounds were characterized by elemental analysis, IR, UV-vis, (1)H, (13)C NMR, and X-ray diffraction. The relative configuration of the two carboxylates is cis, placing the fatty acid moieties on the same face of the phthalocyanine macrocycle. In the solid-state the tin atoms possess square antiprismatic octacoordinated geometries. Both tin phthalocyanines were tested as corrosion inhibitors for hydrogen sulfide corrosive media showing a chemisorption process of the nanocap motifs on the metallic surface. Apparently, the length of the hydrophobic chain contributes significantly to the inhibition efficiency, in the sense that shorter chains increase the efficiency.
authors.affiliation: Programa de Ingeniería Molecular, IMP, Eje Central L. Cárdenas 152, C.P. 07730, Mexico. hbeltran@imp.mx
authors.forename: Hiram I
authors.initials: HI
authors.lastname: Beltrán
authors.forename: Raquel
authors.initials: R
authors.lastname: Esquivel
authors.forename: Arturo
authors.initials: A
authors.lastname: Sosa-Sánchez
authors.forename: Jose L
authors.initials: JL
authors.lastname: Sosa-Sánchez
authors.forename: Herbert
authors.initials: H
authors.lastname: Höpfl
authors.forename: Victor
authors.initials: V
authors.lastname: Barba
authors.forename: Norberto
authors.initials: N
authors.lastname: Farfán
authors.forename: Monica
authors.initials: M
authors.lastname: Galicia García
authors.forename: Octavio
authors.initials: O
authors.lastname: Olivares-Xometl
authors.forename: Luis S
authors.initials: LS
authors.lastname: Zamudio-Rivera