2018
DOI: 10.29356/jmcs.v62i1.575
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Prediction of Thermodynamic and Structural Properties of Sulfamerazine and Sulfamethazine in Water Using DFT and ab Initio Methods

Abstract: The acid-ionization constant (pK<sub>a</sub>) is an important physico-chemical property of molecules. In this research work, the ab initio and density functional theory (DFT) methods, in combination with the polarized continuum model (PCM), were used to calculate the acid-ionization constant of sulfamethazine (SMZ) and sulfamerazine (SMR) solved in water. For these molecules, the calculated pK<sub>a</sub> value is in relatively good agreement with the experimental one. Also, in these ca… Show more

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Cited by 8 publications
(2 citation statements)
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References 9 publications
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“…On the other hand, morphology of SMR changes under different pH conditions because of the contents of functional groups such as aniline and heterocyclic alkali ( Figure 8 ). The pKa 1 value of SMR was 2.13 and the pKa 2 value was 6.70 [ 47 ]. When the pH value of the solution is less than 2.13, SMR will be positively charged, which is not conducive to the detachment of N atoms from the aromatic ring.…”
Section: Resultsmentioning
confidence: 99%
“…On the other hand, morphology of SMR changes under different pH conditions because of the contents of functional groups such as aniline and heterocyclic alkali ( Figure 8 ). The pKa 1 value of SMR was 2.13 and the pKa 2 value was 6.70 [ 47 ]. When the pH value of the solution is less than 2.13, SMR will be positively charged, which is not conducive to the detachment of N atoms from the aromatic ring.…”
Section: Resultsmentioning
confidence: 99%
“…Це такі речовини, як дезоксихолієва кислота, холестерин, натрію хлорид, бензиловий спирт тощо [19] [21]. Аналіз термодинамічних та структурних властивостей сульфамеразину показав, що депротонізована молекула СМР здатна взаємодіяти з катіонною формою МГА, з утворенням бінарної солі [22]. Для створення нових меглюмінвмісних ліпосомальних ЛЗ у формі розчину для ін'єкцій можуть бути корисними дані літератури [19][20][21][22].…”
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