The aim of this study was a characterization of the crystals of gold complexes based on mercaptotrazole, obtained from solutions with different pH values (2, 4, 7, and 9), using the methods of infrared (IR) and Raman spectroscopy. Both methods provided very useful information on the investigated systems and signalized existence of the Au-S bond in the complexes obtained at pH = 2 and 9. Recorded spectra clearly illustrated the changes that occur in the systems as a consequence of pH change. At the same time, the results also showed that the pyrrole nitrogen atoms stay protonated at pH = 9, which is not in favor of the assumption evolved from the previous UV-vis analysis of possible additional coordination between Au and possible deprotonated nitrogen atoms at this particular pH.
Keywords:
Gold-mercaptotriazole (Au-MT) / IR / Raman spectroscopy / Synthesis
Source:
Bulgarian Chemical Communications, 2019, 51, 3, 358-364
TY - JOUR
AU - Dimitrijević, S.B.
AU - Alagić, S.Č.
AU - Rajčić-Vujasinović, M.M.
AU - Dimitrijević, S.P.
AU - Ivanović, A.T.
PY - 2019
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5898
AB - The aim of this study was a characterization of the crystals of gold complexes based on mercaptotrazole, obtained from solutions with different pH values (2, 4, 7, and 9), using the methods of infrared (IR) and Raman spectroscopy. Both methods provided very useful information on the investigated systems and signalized existence of the Au-S bond in the complexes obtained at pH = 2 and 9. Recorded spectra clearly illustrated the changes that occur in the systems as a consequence of pH change. At the same time, the results also showed that the pyrrole nitrogen atoms stay protonated at pH = 9, which is not in favor of the assumption evolved from the previous UV-vis analysis of possible additional coordination between Au and possible deprotonated nitrogen atoms at this particular pH.
PB - Bulgarian Academy of Sciences
T2 - Bulgarian Chemical Communications
T1 - IR/Raman characterization of Au-mercaptotriazole crystals
EP - 364
IS - 3
SP - 358
VL - 51
DO - 10.34049/bcc.51.3.5003
ER -
@article{
author = "Dimitrijević, S.B. and Alagić, S.Č. and Rajčić-Vujasinović, M.M. and Dimitrijević, S.P. and Ivanović, A.T.",
year = "2019",
abstract = "The aim of this study was a characterization of the crystals of gold complexes based on mercaptotrazole, obtained from solutions with different pH values (2, 4, 7, and 9), using the methods of infrared (IR) and Raman spectroscopy. Both methods provided very useful information on the investigated systems and signalized existence of the Au-S bond in the complexes obtained at pH = 2 and 9. Recorded spectra clearly illustrated the changes that occur in the systems as a consequence of pH change. At the same time, the results also showed that the pyrrole nitrogen atoms stay protonated at pH = 9, which is not in favor of the assumption evolved from the previous UV-vis analysis of possible additional coordination between Au and possible deprotonated nitrogen atoms at this particular pH.",
publisher = "Bulgarian Academy of Sciences",
journal = "Bulgarian Chemical Communications",
title = "IR/Raman characterization of Au-mercaptotriazole crystals",
pages = "364-358",
number = "3",
volume = "51",
doi = "10.34049/bcc.51.3.5003"
}
Dimitrijević, S.B., Alagić, S.Č., Rajčić-Vujasinović, M.M., Dimitrijević, S.P.,& Ivanović, A.T.. (2019). IR/Raman characterization of Au-mercaptotriazole crystals. in Bulgarian Chemical Communications
Bulgarian Academy of Sciences., 51(3), 358-364.
https://doi.org/10.34049/bcc.51.3.5003
Dimitrijević S, Alagić S, Rajčić-Vujasinović M, Dimitrijević S, Ivanović A. IR/Raman characterization of Au-mercaptotriazole crystals. in Bulgarian Chemical Communications. 2019;51(3):358-364.
doi:10.34049/bcc.51.3.5003 .
Dimitrijević, S.B., Alagić, S.Č., Rajčić-Vujasinović, M.M., Dimitrijević, S.P., Ivanović, A.T., "IR/Raman characterization of Au-mercaptotriazole crystals" in Bulgarian Chemical Communications, 51, no. 3 (2019):358-364,
https://doi.org/10.34049/bcc.51.3.5003 . .
