Thermodynamic studies on metal complexes of Co2+, Ni2+, Cu2+ and Cd2+ with 8-hydroxy 5-quinolinesulfonic acid in water, methanol and water-methanol binary solvent systems at 303.15 K, 313.15 K and 323.15 K by conductometric method

The present work relates to the complexation reaction between Amlodipine Besylate[AML] with Ni2+, Mg2+, Co2+ and Ca2+ cation in dimethylsulfoxide (DMSO), pure methanol (MeOH) and their binary mixtures(DMSO-MeOH and DMSO-Water) by conductometric method. The conductance data show that the stoichiometry of the complexes formed between AML with Ni2+, Mg2+, Co2+ and Ca2+ cation in pure DMSO, pure MeOHas well as in the binary solvent mixtures was 1:1. The stability of AML complexes with Ni2+ , Mg2+, Co2+ and Ca2+ metal ion was observed to be sensitive to the nature of the solvent system. In case of DMSO-Water binary solvent systems there was a linear change in LogKf values but in case of DMSO-MeOH binary solvent systems non linear change in LogKf values observed.The negative values of ΔG0 show that the reaction is spontaneous and ability of the AML ligand to form stable complexes. However, the result shows positive value of ΔH0 which indicates that enthalpy is not driving force for the formation of the complexes. Furthermore, the positive value of ΔS0 indicates that entropy is a driving force for the complexation. The values of ΔH0 and ΔS0 for formation of the complexes were obtained from temperature dependence of the stability constants.

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Thermodynamic studies on metal complexes of Cd2+, Ni2+, Cu2+ AND Co2+ with pyridine-2,6-dicarboxylic acid in water, methanol and water-methanol binary solvent systems at 298.15 , 308.15 and 318.15 K by conductometric method

10.31221/osf.io/59gx2 ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Dicarboxylic Acid ◽

Formation Constants ◽

Least Square ◽

Binary Solvent ◽

Complexation Reaction ◽

Conductometric Method ◽

Binary Solvent Systems ◽

Solvent Systems ◽

Hoff Equation ◽

Linear Least Square

Stability constants are measured for complexes of Cd2+, Ni2+, Cu2+ and Co2+ with pyridine-2,6-dicarboxylic acid(PDA) in water, methanol and water-methanol binary solvent systems at 298.15, 308.15 and 318.15 K by conductometric method. The result shows that the stoichiometry of the complexes of PDA with all metals in all binary solvent systems is 1:2 [ML2]. The logKf values of PDA-M2+ complexes in H2O-MeOH binary solvent systems increase with increasing % of MeOH and temperature. The ΔH0 and ΔS0 of the complexation reaction in the different H2O-MeOH binary solvent systems were evaluated by the temperature dependence of the formation constants using a linear least square analysis according to van’t Hoff equation.

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Solubility Measurement and Data Correlation of Pentaerythritol in Four Binary Solvent Systems at Temperatures from 283.15 to 323.15 K

Journal of Chemical & Engineering Data ◽

10.1021/acs.jced.1c00080 ◽

2021 ◽

Author(s):

Shaonan Zhang ◽

Ningning Tian ◽

Shengzhe Jia ◽

Jing Yang ◽

Yu Zhou ◽

...

Keyword(s):

Binary Solvent ◽

Data Correlation ◽

Solubility Measurement ◽

Binary Solvent Systems ◽

Solvent Systems

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Measurement and Correlation for Solubility of Myo-inositol in Five Pure and Four Binary Solvent Systems

Journal of Chemical & Engineering Data ◽

10.1021/acs.jced.0c01067 ◽

2021 ◽

Author(s):

Ying Guo ◽

Hui He ◽

Haishuang Huang ◽

Jingxuan Qiu ◽

Jiaming Han ◽

...

Keyword(s):

Binary Solvent ◽

Binary Solvent Systems ◽

Solvent Systems

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Effect of modification of binary solvent molecules on ε-CL-20 crystal morphology: a molecular dynamics study

CrystEngComm ◽

10.1039/d1ce00003a ◽

2021 ◽

Author(s):

Yanpeng Zhao ◽

Guanwen Su ◽

Guozhao Liu ◽

Hongyuan Wei ◽

Leping Dang

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulation ◽

Crystal Morphology ◽

Dynamics Simulation ◽

Binary Solvent ◽

Binary Solvent Systems ◽

Solvent Systems ◽

Solvent Molecules

The effects of thirteen binary solvent systems on the growth of CL-20 were studied by molecular dynamics simulation, and the effect of antisolvent properties on the solvent inhibition was systematically investigated.

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