G. B. Eshova, Dzh. A. Davlatshoeva, F. Miraminzoda
{"title":"FeII 和 FeIII 的丙氨酸配位化合物的分布图和稳定性","authors":"G. B. Eshova, Dzh. A. Davlatshoeva, F. Miraminzoda","doi":"10.1007/s11172-024-4377-5","DOIUrl":null,"url":null,"abstract":"<div><p>The formation of mononuclear complexes and a heterovalent compound in the Fe<sup>II</sup>—Fe<sup>III</sup>—<span>l</span>-Ala—H<sub>2</sub>O system was observed when using the Clark—Nikolsky oxidation potential at a temperature of 298.15 K and an ionic strength of the (Na(H)ClO<sub>4</sub>) solution equal to 0.75 mol L<sup>−1</sup>. The method of successive approximations (iteration) of the Yusupov oxidation function was used to calculate the stability and the model parameters of the mononuclear coordination compounds [FeHL(H<sub>2</sub>O)<sub>5</sub>]<sup>3+</sup>, [Fe(HL)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>]<sup>3+</sup>, [Fe<sub>2</sub>(HL)<sub>2</sub>(OH)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup>, [Fe<sup>III</sup>Fe<sup>II</sup>(HL)<sub>2</sub>(OH)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>]<sup>+</sup>, [FeHL(H<sub>2</sub>O)<sub>5</sub>]<sup>2+</sup>, [Fe(HL)(OH)(H<sub>2</sub>O)<sub>4</sub>]<sup>+</sup>, and [Fe(HL)(OH)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>]<sup>0</sup> (L is an alanine ligand), the formation constants of these complexes, to determine the regions where they are dominant and their maximum degrees of accumulation, as well as to plot the diagrams of their distribution as a function of pH. It was determined that the heterovalent complex is the most stable and dominates up to pH 9.5.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 9","pages":"2652 - 2659"},"PeriodicalIF":1.7000,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Distribution diagrams and stability of alanine coordination compounds of FeII and FeIII\",\"authors\":\"G. B. Eshova, Dzh. A. Davlatshoeva, F. Miraminzoda\",\"doi\":\"10.1007/s11172-024-4377-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The formation of mononuclear complexes and a heterovalent compound in the Fe<sup>II</sup>—Fe<sup>III</sup>—<span>l</span>-Ala—H<sub>2</sub>O system was observed when using the Clark—Nikolsky oxidation potential at a temperature of 298.15 K and an ionic strength of the (Na(H)ClO<sub>4</sub>) solution equal to 0.75 mol L<sup>−1</sup>. The method of successive approximations (iteration) of the Yusupov oxidation function was used to calculate the stability and the model parameters of the mononuclear coordination compounds [FeHL(H<sub>2</sub>O)<sub>5</sub>]<sup>3+</sup>, [Fe(HL)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>]<sup>3+</sup>, [Fe<sub>2</sub>(HL)<sub>2</sub>(OH)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>]<sup>2+</sup>, [Fe<sup>III</sup>Fe<sup>II</sup>(HL)<sub>2</sub>(OH)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>]<sup>+</sup>, [FeHL(H<sub>2</sub>O)<sub>5</sub>]<sup>2+</sup>, [Fe(HL)(OH)(H<sub>2</sub>O)<sub>4</sub>]<sup>+</sup>, and [Fe(HL)(OH)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>]<sup>0</sup> (L is an alanine ligand), the formation constants of these complexes, to determine the regions where they are dominant and their maximum degrees of accumulation, as well as to plot the diagrams of their distribution as a function of pH. It was determined that the heterovalent complex is the most stable and dominates up to pH 9.5.</p></div>\",\"PeriodicalId\":756,\"journal\":{\"name\":\"Russian Chemical Bulletin\",\"volume\":\"73 9\",\"pages\":\"2652 - 2659\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-10-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Chemical Bulletin\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11172-024-4377-5\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Chemical Bulletin","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11172-024-4377-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Distribution diagrams and stability of alanine coordination compounds of FeII and FeIII
The formation of mononuclear complexes and a heterovalent compound in the FeII—FeIII—l-Ala—H2O system was observed when using the Clark—Nikolsky oxidation potential at a temperature of 298.15 K and an ionic strength of the (Na(H)ClO4) solution equal to 0.75 mol L−1. The method of successive approximations (iteration) of the Yusupov oxidation function was used to calculate the stability and the model parameters of the mononuclear coordination compounds [FeHL(H2O)5]3+, [Fe(HL)2(H2O)4]3+, [Fe2(HL)2(OH)4(H2O)6]2+, [FeIIIFeII(HL)2(OH)4(H2O)6]+, [FeHL(H2O)5]2+, [Fe(HL)(OH)(H2O)4]+, and [Fe(HL)(OH)2(H2O)3]0 (L is an alanine ligand), the formation constants of these complexes, to determine the regions where they are dominant and their maximum degrees of accumulation, as well as to plot the diagrams of their distribution as a function of pH. It was determined that the heterovalent complex is the most stable and dominates up to pH 9.5.
期刊介绍：
Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections:
General and Inorganic Chemistry;
Physical Chemistry;
Organic Chemistry;
Organometallic Chemistry;
Chemistry of Natural Compounds and Bioorganic Chemistry.
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