Cation effect on the inorganic–organic layered structure of pyrazole-4-sulfonate networks and inhibitory effects on copper corrosion

Fernando, Isurika R.; Daskalakis, Nikos; Demadis, Konstantinos D.; Mezei, Gellert

doi:10.1039/b9nj00361d

Cited by 21 publications

(20 citation statements)

References 65 publications

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“…Cs + or Rb + not only coordinate with O atoms of 4 0 -OCH 3 and 3 0 -SO 3 attached on the ring B, but also with O atoms (O8, O9) of 6-OCH 3 and 5-OH in the ring A. All the M-O (M = Cs, Rb) bond lengths fall in the range of 2.983 (3)-3.351 (4) Å, being similar to those of some reported cesium or rubidium complexes [49,50]. In the previously reported [NaL3(H 2 O)]ÁH 2 O and KL3(H2O) (L3 = 5,7-dihydroxy-6,4 0 -dimethoxy-isoflavone-3 0 -sulfonate) [27,28], Na + and K + are six-coordinated and sevencoordinated, respectively.…”

Section: [Csl3á(h 2 O) 2 ]áH 2 O (3) and [Rbl3(h 2 O) 2 ]áH 2 O (4)supporting

confidence: 71%

Metal–organic coordination polymers based on Cs(I), Rb(I) and isoflavone-3′-sulfonate ligands

et al. 2015

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Section: [Csl3á(h 2 O) 2 ]áH 2 O (3) and [Rbl3(h 2 O) 2 ]áH 2 O (4)supporting

confidence: 71%

Metal–organic coordination polymers based on Cs(I), Rb(I) and isoflavone-3′-sulfonate ligands

et al. 2015

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“…In the complexes of [ M (H 2 O) 6 ](ans) 2 ( M = Co, Mg Mn, and Ni) and [ M (H 2 O) 6 ](5‐ans) 2 ( M = Co, Mg, and Mn; 5‐ans = 5‐aminonaphthalene‐2‐sulfonate) reported by Squattrito 9,31 the anions are noncoordinating, and the sulfonate and amino groups are inverted on adjacent rows of anions along the a direction. The noncoordinating sulfonates in [Mg(H 2 O) 6 ](4‐SO 3 ‐pzH) 2 form pairs of parallel π–π stacks, which result in a dimer, and the N–H hydrogen atoms of the pyrazole moieties form hydrogen bonds to the sulfonate groups 6. Likewise, 2, 6‐nds form pairs of parallel π–π stacks in [Cu(en) 2 (H 2 O) 2 ][Ni(en) 3 ] 2 (2, 6‐nds) 3 · 4H 2 O (2, 6‐nds = naphthalene‐2, 6‐disulfonatonate) 13.…”

Section: Resultsmentioning

confidence: 99%

“…Owing to their weak coordination abilities to transition metal atoms, most of the reported complexes containing organosulfonates are aqua‐metal salts, and the sulfonate species only acts as counter‐anion to balance the charge in those complexes 1–6. In some rare cases, however, the sulfonate serves as ligand forming mixed‐ligand complexes, such as [Cu(H 2 O) 2 (4‐SO 3 ‐pzH)] · 4H 2 O (4‐SO 3 ‐pzH = pyrazole‐4‐sulfonate),6 and [Ni(H 2 O) 4 (5‐ans) 2 ] · 2H 2 O, [Ag(H 2 O) 2 (6‐1, 3‐nds) 2 )] · 0.42H 2 O, [Ni(H 2 O) 4 (6‐1, 3‐nds) 2 ] · 4H 2 O (5‐ans = 5‐aminonaphthalene‐2‐sulfonate; 6‐1, 3‐nds = 6‐ammonionaphthalene‐1, 3‐disulfonatonate) 9. Some polymeric complexes constructed by organic molecule and disulfonate as bidentate‐bridging ligands have been reported by Cai 10–12…”

Section: Introductionmentioning

confidence: 99%

A Novel Organosulfonate Cadmium(II) Complex with Graphite‐like 2D Layer Linked by Hydrogen Bonds

Wang

Yang

et al. 2012

Zeitschrift anorg allge chemie

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A novel mixed-ligand complex, [Cd(im) 6 ][Cd(im) 3 -(H 2 O) 3 ] 2 (ans) 6 ·8H 2 O (1), was obtained from the reaction of Cd(OAc) 2 ·2H 2 O, imidazole (im) and sodium 4-aminonaphthalene-1sulfonate tetrahydrate (Na-ans) in a mixed solvent at 25°C. The complex was characterized by elemental analysis, IR spectroscopy, and Xray single crystal diffraction. There are two kinds of cations constructed by Cd II atoms with a octahedral coordination arrangement in 1. The Cd II atom is bonded by six nitrogen atoms from six im ligands in the first cation, and the second central Cd II atom is bonded by three

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“…Thereby, the migration of corrosion particles to the metal surface can be effectively prevented and metal substrates can be protected from corrosion (Agboola and Ozoemena, 2008; Mo et al , 2015). Copper has been widely used in various industries because of its good physicochemical properties, but it is often accompanied by the occurrence of corrosion in use (Xiong et al , 2016; Fernando et al , 2010). To improve the corrosion resistance of copper and reduce the occurrence of corrosion, scientific researchers have carried out extensive research on it.…”

Section: Introductionmentioning

confidence: 99%

Study on the preparation and corrosion inhibition of Schiff-base self-assembled membranes

et al. 2019

ACMM

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Purpose This paper aims to evaluate the inhibitive effect and adsorption behavior of the 2-amino-5-thiol-1,3,4-thiadiazole vanillin (A) on copper in 3 per cent NaCl solution. Design/methodology/approach A thiazole Schiff bases were synthesized, named, 2-amino-5-thiol-1,3,4-thiadiazole vanillin (A), which was fabricated respectively on copper surface by the molecular self-assembled. Evaluation was carried out by electrochemical measurement and surface analysis techniques. Measurement of static friction coefficient scanning electron microscopy and Contact angle analysis were applied, and it is finally confirmed the existence of the adsorbed film. The inhibitive mechanism of A was evaluated by means of quantitative calculation and molecular dynamics simulation. Findings The electrochemical measurement indicated that the self-assembled molecular film can effectively inhibit the corrosion of copper sheet, when the concentration was 15 mmol⋅L−1 and the assembly time was 6 h, the corrosion inhibition effect was the best, reaching as high as 97.5 per cent. Scanning electron microscopy results showed that the Schiff base compound forms a protective film on the surface of the copper, which effectively blocks the transfer of corrosion particles to the metal substrate, thereby inhibiting the occurrence of corrosion. Adsorption behavior of A followed the Langmuir’s adsorption isotherm and attributed to mixed-type adsorption. The results of Quantitative calculation and molecular dynamics simulation showed that A was adsorbed on Cu (111) surface in parallel. Research limitations/implications In this study, the corrosion inhibition properties of Schiff base film were investigated by combining theory with experiment. Theoretical calculation is helpful to guide the synthesis of efficient and environmentally friendly corrosion inhibitors. Practical implications The damage caused by metal corrosion is great. The self-assembled Schiff base membrane synthesized in this paper is simple and compact, and the corrosion inhibition efficiency of copper in 3 per cent NaCl solution is 97.5 per cent. Social implications Inhibition of metal corrosion can better save energy and reduce economic losses. Originality/value The synthesized Schiff base was prepared on the copper surface by the molecular self-assembled. The Schiff base membrane has a good corrosion inhibition effect on copper in 3 per cent NaCl solution, and the corrosion inhibition efficiency is up to 97.5 per cent.

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Cation effect on the inorganic–organic layered structure of pyrazole-4-sulfonate networks and inhibitory effects on copper corrosion

Cited by 21 publications

References 65 publications

Metal–organic coordination polymers based on Cs(I), Rb(I) and isoflavone-3′-sulfonate ligands

Metal–organic coordination polymers based on Cs(I), Rb(I) and isoflavone-3′-sulfonate ligands

A Novel Organosulfonate Cadmium(II) Complex with Graphite‐like 2D Layer Linked by Hydrogen Bonds

Study on the preparation and corrosion inhibition of Schiff-base self-assembled membranes

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