Infrared study of 2-mercaptobenzothiazole and two of its derivatives adsorbed on PbS

Contini, G.; Ciccioli, A.; Cozza, C.; Bárbaro, M. B.; Marabini, A.M.

doi:10.1016/s0301-7516(97)00031-8

Cited by 24 publications

(9 citation statements)

References 9 publications

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“…The adsorption of 2-mercaptobenzothiazole (in the following MBT) on metals and metal sulfides has been widely investigated − because this compound forms hydrophobic complexes with many metals and therefore is used as a corrosion inhibitor or collector for mineral flotation. Moreover, this molecule is interesting for the formation of self-assembled monolayers on metals − due to the growing interest in these interfacial structures based upon the spontaneous adsorption and orientation of molecules with a reactive group which binds chemically to the substrate and an organic part which interacts with the other molecules.…”

Section: Introductionmentioning

confidence: 99%

Gas-Phase Photoemission Study of 2-Mercaptobenzothiazole

Contini¹,

Castro

Stranges

et al. 2002

J. Phys. Chem. A

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2-Mercaptobenzothiazole (C7H5NS2) has been investigated by synchrotron radiation photoelectron spectroscopy (PES) in the gas phase. The valence region, C 1s and S 2p photoemission spectra have been measured. Comparison of the experimental results with theoretical ab initio calculations, performed for two possible tautomeric forms of the molecule, shows that only the thione form is present in the gas phase. Vibrational structure has been clearly observed in the valence photoemission spectra. In the C 1s spectrum the seven components due to the inequivalent carbon atoms in the molecule have been assigned on the basis of ab initio calculations. S 2p components have also been assigned. The photoemission results have been compared with previously reported photoemission measurements for 2-mercaptobenzoxazole.

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Section: Introductionmentioning

confidence: 99%

Gas-Phase Photoemission Study of 2-Mercaptobenzothiazole

Contini¹,

Castro

Stranges

et al. 2002

J. Phys. Chem. A

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“…Presented in Table 2, are the relevant frequency bands assigned accordingly. A sharp frequency band at 1630 in pyrimethamine and 1635 in trimethoprim assigned to the pyrimidine nitrogen v(C=N) (Contini et al, 1997) shifted to 1620, 1619, 1607 and 1611 cm -1 in Ag(pyrm)(NO 3 ) (PPh 3 ), Ag(pyrm)(CH 3 COO)(PPh 3 ), Ag(tmp)(NO 3 )(DPPE) and Ag(tmp)(NO 3 )(PPh 3 ), respectively. The significant shifts to a lower frequency band suggest the coordination of the metal ion to the ligand through the pyrimidine nitrogen of the ligands.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization and antibacterial screening of 2,4-diaminopyrimidine pyrimethamine and trimethoprim silver complexes

Idemudia¹

2012

Afr. J. Biotechnol.

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Air stable silver Ag(I) complexes of pyrimethamine and trimethoprim drugs have been synthesized and characterized by elemental analysis, Fourier transform infrared (FTIR) and ultraviolet visible (UV-Vis) spectroscopy, and conductivity measurement. The metal complexes formed a three and four coordinate geometry with the ligands acting as a monodentate molecule bonding to the silver ion in each case through the pyrimidine N (1) nitrogen. The complexes have non-electrolyte behaviour in dimethylformamide (DMF) solution with its low conductivity values. Silver complexes, their free ligands alongside the corresponding silver salts were screened against selected bacterial isolates. All the silver complexes showed enhanced antibacterial activities compared to their free ligands and potential antibacterial agents have been identified.

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“…As a matter of fact, SAMs of organosulfur compounds on gold surfaces are archetypal systems , that have been extensively studied and used to prepare structurally and chemically complex organic surfaces with distinct microscopic characteristics. , In particular, the deposition of thiol derivatives − has become the most simple and efficient way for the functionalization of gold substrates and nanoparticles, − with many applications as electric devices, biosensors, and catalysts. − ,, Other alternatives to thiols, containing sulfur in the head group have been reported, including sulfides, disulfides, − thiosulfates, thiocyanates, sulfenyl chlorides, sulfonyl phthalimides, sulfonates, and thiophene derivatives. − …”

Section: Introductionmentioning

confidence: 99%

Adsorption and Dissociation of R-Methyl p-Tolyl Sulfoxide on Au(111)

et al. 2023

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Sulfur-based molecules producing self-assembled monolayers on gold surfaces have long since become relevant functional molecular materials with many applications in biosensing, electronics, and nanotechnology. Among the various sulfur-containing molecules, the possibility to anchor a chiral sulfoxide to a metal surface has been scarcely investigated, despite this class of molecules being of great importance as ligands and catalysts. In this work, (R)-(+)-methyl p-tolyl sulfoxide was deposited on Au(111) and investigated by means of photoelectron spectroscopy and density functional theory calculations. The interaction with Au(111) leads to a partial dissociation of the adsorbate due to S–CH3 bond cleavage. The observed kinetics support the hypotheses that (R)-(+)-methyl p-tolyl sulfoxide adsorbs on Au(111) in two different adsorption arrangements endowed with different adsorption and reaction activation energies. The kinetic parameters related to the adsorption/desorption and reaction of the molecule on the Au(111) surface have been estimated.

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Infrared study of 2-mercaptobenzothiazole and two of its derivatives adsorbed on PbS

Cited by 24 publications

References 9 publications

Gas-Phase Photoemission Study of 2-Mercaptobenzothiazole

Gas-Phase Photoemission Study of 2-Mercaptobenzothiazole

Synthesis, characterization and antibacterial screening of 2,4-diaminopyrimidine pyrimethamine and trimethoprim silver complexes

Adsorption and Dissociation of R-Methyl p-Tolyl Sulfoxide on Au(111)

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