Nanocap-shaped tin phthalocyanines: synthesis, characterization, and corrosion inhibition activity.

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ID: 110361
2005
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Abstract
Thermal and microwave reactions between [PcSn(IV)Cl2] (1) and the potassium salts of eight fatty acids (2 a-h) led to cis-[(RCO2)2Sn(IV)Pc] compounds (3 a-h) in yields ranging from 54 to 90 %. Compounds 3 a-h were fully characterized by elemental analysis, spectroscopy (IR, UV/Vis, multinuclear NMR), and seven X-ray diffraction structures, whereby two different allotropes were observed in two cases. The two carboxylates in 3 have a cis anisobidentate binding mode, octacoordination of the tin atoms with square-antiprismatic geometry, and pi-electron-rich nanocap shapes. On account of the latter characteristics, 3 a-h compounds have anticorrosion properties. LPR and Tafel electrochemical methods were used to characterize the behavior of these derivatives in naturally aerated sour brine, which is a common environment in petroleum production and refinery operations. The measurement of the corrosion rate of carbon steel AISI 1018 in the presence of 3 a-h (500 ppm) gave efficiencies of 61-87 % for the inhibitor performance. Of the different derivatives examined, compounds 3 e and 3 h were the most effective corrosion inhibitor prototypes.
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beltrn2005nanocapshapedchemistry Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Beltrán, Hiram I;Esquivel, Raquel;Lozada-Cassou, Marcelo;Dominguez-Aguilar, Marco A;Sosa-Sánchez, Arturo;Sosa-Sánchez, Jose L;Höpfl, Herbert;Barba, Victor;Luna-García, Rolando;Farfán, Norberto;Zamudio-Rivera, Luis S;
Journal Chemistry (Weinheim an der Bergstrasse, Germany)
Year 2005
DOI
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Keywords
crystal structure hydrogen bonds n,n′-di­cyclo­hexyl­carbodimide n,n′-di­cyclo­hexyl­urea

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