Synthesis, characterization and X-ray crystal structure of copper(I) complexes of the 2-(2-quinolyl)benzothiazole ligand. Electrochemical and antibacterial studies

Meghdadi, Soraia; Amirnasr, Mehdi; Mirhashemi, Afsaneh; Amiri, Ahmad

doi:10.1016/j.poly.2015.05.026

Cited by 15 publications

(9 citation statements)

References 45 publications

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“…In complex (2), an orientational disorder [0.843 (6):0.157 (6)] within the qbt ligand was observed, in which the quinoline and benzothiazole frames partially switch positions. This disorder is similar to that observed for the same ligand by Meghdadi et al (2015). The disorder was modeled by assigning partly occupied positions of the S atom (S1 and S1B) of the benzothiazole fragment and the C10 and C11 atoms of the quinoline fragment (C10, C11, C10B, and C11B), and the anisotropic displacement parameters of the C10B and C11B atoms were constrained to be equal (SHELXL; Sheldrick, 2015a).…”

Section: Refinementsupporting

confidence: 52%

Synthesis and structures of photoactive manganese–carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole

et al. 2017

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PhotoCORMs (photo-active CO-releasing molecules) have emerged as a class of CO donors where the CO release process can be triggered upon illumination with light of appropriate wavelength. We have recently reported an Mn-based photoCORM, namely [MnBr(pbt)(CO)] [pbt is 2-(pyridin-2-yl)-1,3-benzothiazole], where the CO release event can be tracked within cellular milieu by virtue of the emergence of strong blue fluorescence. In pursuit of developing more such trackable photoCORMs, we report herein the syntheses and structural characterization of two Mn-carbonyl complexes, namely fac-tricarbonylchlorido[2-(pyridin-2-yl)-1,3-benzothiazole-κN,N']manganese(I), [MnCl(CHNS)(CO)], (1), and fac-tricarbonylchlorido[2-(quinolin-2-yl)-1,3-benzothiazole-κN,N']manganese(I), [MnCl(CHNS)(CO)], (2). In both complexes, the Mn center resides in a distorted octahedral coordination environment. Weak intermolecular C-H...Cl contacts in complex (1) and Cl...S contacts in complex (2) consolidate their extended structures. These complexes also exhibit CO release upon exposure to low-power broadband visible light. The apparent CO release rates for the two complexes have been measured to compare their CO donating capacity. The fluorogenic 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole ligands provide a convenient way to track the CO release event through the `turn-ON' fluorescence which results upon de-ligation of the ligands from their respective metal centers following CO photorelease.

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Section: Refinementsupporting

confidence: 52%

Synthesis and structures of photoactive manganese–carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole

et al. 2017

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Several chemical properties of copper complexes have been attributed to easy accessibility to Cu(I), Cu(II) and Cu(III) oxidation states. 3,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Although a few studies on the coordination chemistry of copper using several kinds azo ligands have been reported 3,[39][40][41][42][43][44][45] but azo ligands have never been used for the synthesis of copper complexes targeting the oxidase models. The necessity to make progress in developing copper oxidase models requires synthesis of appropriate copper complexes to rationalize the functions of such oxidases unequivocally.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

et al. 2016

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The new complexes of compositions [(L a) 2 Cu] and [(L b) 2 Cu] were prepared by treating with 2-hydroxy-5-methyl-3-(2-aryldiazenyl)phenylimino) methyl) benzaldehyde (HL a) and ethyl-2-cyano-3-(2hydroxy-5-methyl-3-(-(2-aryldiazenyl) phenylimino) methyl) phenyl) acrylate (HL b) ligands [where aryl is phenyl for HL 1 a and HL 1 b ; p-methyl phenyl for HL 2 a and HL 2 b ; and p-chloro phenyl for HL 3 a and HL 3 b ] with Cu(OAc) 2 .H 2 O, respectively. Both the bis copper(II) complexes consist of tridentate (N,N,O) anionic ligands, L − a or L − b. X-ray structures of the representative complexes [(L 1 a) 2 Cu] and [(L 2 b) 2 Cu] were determined to confirm the molecular species unequivocally. The molecular structure of copper complexes exhibited tetragonally distorted (Jahn-Teller) geometry consistent with the d 9 configuration of Cu(II) metal ion. Oxidation of benzyl alcohols using the newly synthesized complexes as catalyst has been studied. Photoluminescence properties of [(L 2 a) 2 Cu] and [(L 2 b) 2 Cu] were exploited for selective cyanide recognition. The [(L b) 2 Cu], complexes displayed antibacterial activity toward gram positive and gram negative bacteria.

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“…These characteristics provide a basis for investigating the effect of both physicochemical and electronic properties of these compounds on their inhibition behavior. Meghdadi et al reported on the green synthesis and application of benzothiazole-based ligands (Meghdadi et al , 2012; Meghdadi et al , 2015), here in we report the detailed investigation on the inhibition behavior of three 2-phenylbenzothiazole derivatives on MS in HCl solution using potentiodynamic polarization, weight loss, EIS, methods and scanning electron microscopy (SEM) surface analysis.…”

Section: Introductionmentioning

confidence: 94%

“…Recently, it has been attempted to combine theoretical and practical approaches to investigate compounds with similar structureand find models that would enable to produce newly synthesizedcompounds acting as corrosion inhibitör (Meghdadi et al , 2015). In this way, the quantum chemical methods enable the definition of a large number of molecular quantities characterizing the reactivity, shape and binding properties of a complete molecule (Gökhan, 2008).…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental investigations on corrosion control of mild steel in hydrochloric acid solution by 4-aminothiophenol

Yıldız

Mert

2019

ACMM

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Purpose This paper aims to study inhibitory effect of 4-aminothiophenol on the corrosion of mild steel (MS) in 0.5 M HCl. Design/methodology/approach In this study, electrochemical experiments, quantum chemical calculations, potentiodynamic measurements, linear polarization resistance and scanning electron microscopy were used. Findings The experimental results suggest that this compound is efficient corrosion inhibitor and the inhibition efficiencies increase with increasing their (from 0.5 to 10.0 mM.) concentrations. This reveals that inhibitive actions of inhibitors were mainly due to adsorption on mild steel surface. The adsorption of these inhibitors was found to obey Langmuir adsorption model. The computed quantum chemical features show good correlation with empirical inhibition efficiencies. Originality/value The 4-aminothiophenol is suitable inhibitor for application in closed-circuit systems against corrosion. The study is original and has great impact in industrial area. The obtained theoretical results have been adapted with the experimental data.

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Synthesis, characterization and X-ray crystal structure of copper(I) complexes of the 2-(2-quinolyl)benzothiazole ligand. Electrochemical and antibacterial studies

Cited by 15 publications

References 45 publications

Synthesis and structures of photoactive manganese–carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole

Synthesis and structures of photoactive manganese–carbonyl complexes derived from 2-(pyridin-2-yl)-1,3-benzothiazole and 2-(quinolin-2-yl)-1,3-benzothiazole

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

Theoretical and experimental investigations on corrosion control of mild steel in hydrochloric acid solution by 4-aminothiophenol

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