A structural comparison of some amine- and thione-substituted triazoles

Sen, Ashok K; Singh, Rajkumar Noren; Handa, R. N.; Dubey, Sonal; Squattrito, Philip J.

doi:10.1016/s0022-2860(98)00470-0

Cited by 27 publications

(21 citation statements)

References 11 publications

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“…stretching vibrations of Y zeolite framework [37], is an indication that such SSIE has occurred upon the high temperature treatment of AgNO 3 and HY mixture. It appears that a substantial part of the OH groups of the carrier has been consumed by encapsulation of Ag in cationic positions (Fig.…”

Section: Fig 1 Sem Images Of the Parent Hy (A) And Sd/hy(ss) (B) Samentioning

confidence: 97%

Solid-state encapsulation of Ag and sulfadiazine on zeolite Y carrier

Mavrodinova

Popova

Yoncheva

et al. 2015

Journal of Colloid and Interface Science

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by Solid-state Ion Exchange (SSIE) procedure over zeolite Y, followed by deposition of sulfadiazine (SD) by dry mixing was examined for the preparation of topical antibacterial formulations. The ion-exchange and adsorptive properties of the zeolite matrix were utilized for the bactericidal Ag deposition and loading of antibiotic sulfadiazine.Experiments: Assessment of the encapsulation efficiency of both active components loaded by solid and liquid deposition methods was made by X-ray diffraction, TEM, FT-IR spectroscopy and thermogravimetric analysis (TGA). SD release kinetics was also determined.Findings: Sustained delivery of sulfadiazine has been observed from the Ag-modified zeolites compared to the parent HY material. It was found that if SD was loaded in solution, part of the zeolite silver ions was released and interacted with SD, forming AgSD. By solid-state SD deposition, the reaction between the drug and the silver was restricted within the limits of inter-atomic interaction, and total but prolonged drug release occurred.

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Section: Fig 1 Sem Images Of the Parent Hy (A) And Sd/hy(ss) (B) Samentioning

confidence: 97%

Solid-state encapsulation of Ag and sulfadiazine on zeolite Y carrier

Mavrodinova

Popova

Yoncheva

et al. 2015

Journal of Colloid and Interface Science

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“…136 Another sulfur atom, S(2), is formally neutral and is involved in a donor acceptor bond with the iron atom. 128 The charge of the NO groups is close to zero. In the IR spectrum, the most intense ab sorption bands are assigned to NO vibrations (1807 and 1749 cm -1 with a shoulder at 1725 cm -1 ).…”

Section: Magnetic Properties Of [Fe-s] Nitrosyl Complexesmentioning

confidence: 97%

“…In the spectrum of the starting 1H 1,2,4 triazole 3 thione, this band is observed at 750 cm -1 or 745 cm -1 . 128 The large shift of the band in the region IV observed upon complex formation is indicative of a substantial weakening of the C=S bond and, consequently, a rather high strength of the S→Fe bond. This is consistent with the fact that the S→Fe and S-Fe bonds are similar in length.…”

Section: Magnetic Properties Of [Fe-s] Nitrosyl Complexesmentioning

confidence: 98%

“…The iron atoms have tetrahedral configurations and are separated by a distance of 4.04 Å, unlike the dinuclear complexes, where Fe...Fe ≈ 2.7 Å. 81,82,124,125,127,128 The dinuclear complexes are linked through intermo lecular hydrogen bonds involving the W a and W b water molecules to form dimeric associates. The H N(4) atom of the triazole ring forms an intermolecular hydrogen bond with the oxygen atom of the W a molecule(H N(4) ...O W a , 1.89 Å; N(4)...O W a , 2.82 Å; N(4)-H N(4) -O W a , 169.1°), and the N(5) atom of the triazole ring forms an inter molecular hydrogen bond with the H(1) W b atom (N(5)...H(1) W b , 2.08 Å; N(5)...O W b , 2.79 Å; N(5)-H(1) W b -O W b , 163.0°).…”

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confidence: 99%

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Functional models of [Fe—S] nitrosyl proteins

Санина

Алдошин

2004

Russ Chem Bull

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“…5,6 Purpald (4-amino-3-hydrazino-5-mercapto-1,2,4-trizole), a carbonyl reagent, 7 possesses S-C-N linkages and displays potential ligands for metal complexes that may also be biologically active just like some other amine-and thione-substituted trizoles. 8 The interest in studying purpald by SERS is related to the several adsorption modes these ligands show. A number of possible binding sites are available for the adsorption of purpald on metallic surfaces.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of purpald SAMs on silver and gold electrodes: a Raman mapping study

Chu

Yang

Shuang-yan

et al. 2006

J Raman Spectroscopy

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The adsorption modes of 4-amino-3-hydrazino-5-mercapto-1,2,4-trizole (purpald) self-assembled monolayers (SAMs) formed on SERS-active silver and gold electrodes were comparatively studied using surface-enhanced Raman scattering (SERS), and the self-assembling procedures were investigated by the Raman mapping technique. Purpald SAMs adopted a titled orientation with S, N2 atoms anchoring to the silver electrode and the -N7H 2 close to the surface, whereas purpald stood up on the gold electrode through S, N5 atoms and with -N8H 2 adjacent to the surface. The density functional theory (DFT) at the level of B3LYP was performed to help explain their different adsorption behaviors on the silver and gold electrodes.

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A structural comparison of some amine- and thione-substituted triazoles

Cited by 27 publications

References 11 publications

Solid-state encapsulation of Ag and sulfadiazine on zeolite Y carrier

Solid-state encapsulation of Ag and sulfadiazine on zeolite Y carrier

Functional models of [Fe—S] nitrosyl proteins

Adsorption of purpald SAMs on silver and gold electrodes: a Raman mapping study

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