M. A. Polozov, D. A. Zherebtsov, A. A. Osipov, K. Radzhakumar, S. A. Naifert, D. V. Spiridonova, A. S. Zaguzin, D. A. Vinnik
{"title":"2,3,5,6-四碘-1,4-苯二甲酸的结构和碘化对苯二甲酸的热解特征","authors":"M. A. Polozov, D. A. Zherebtsov, A. A. Osipov, K. Radzhakumar, S. A. Naifert, D. V. Spiridonova, A. S. Zaguzin, D. A. Vinnik","doi":"10.1134/s0022476624070060","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The crystal structure of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid dihydrate is described and the following structural features are established by XRD: C<sub>8</sub>H<sub>6</sub>I<sub>4</sub>O<sub>6</sub>, <i>M </i>705.73; monoclinic crystal system, <i>P</i>2<sub>1</sub>/<i>n</i> space group; unit cell parameters: <i>a</i> = 5.78160(10) Å, <i>b</i> = 15.0976(2) Å, <i>c</i> = 17.3437(3) Å; α = 90°, β = 94.602(2)°, γ = 90°; <i>V</i> = 1509.02(4) Å<sup>3</sup>, <i>Z</i> = 4, ρ<sub>calc</sub> = 3.106 g/cm<sup>3</sup>. Some features of the thermolysis of terephthalic acid and its iodine derivatives are described. Diiodoterephthalic acid is the least thermally stable, tetraiodoterephthalic acid is the most stable. The iodinated terephthalic acids have similar heats of fusion. The largest amount of carbon residue is formed during the decomposition of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structure of 2,3,5,6-Tetraiodo-1,4-Benzenedicarboxylic Acid and Features of the Thermolysis of Iodinated Terephthalic Acids\",\"authors\":\"M. A. Polozov, D. A. Zherebtsov, A. A. Osipov, K. Radzhakumar, S. A. Naifert, D. V. Spiridonova, A. S. Zaguzin, D. A. Vinnik\",\"doi\":\"10.1134/s0022476624070060\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>The crystal structure of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid dihydrate is described and the following structural features are established by XRD: C<sub>8</sub>H<sub>6</sub>I<sub>4</sub>O<sub>6</sub>, <i>M </i>705.73; monoclinic crystal system, <i>P</i>2<sub>1</sub>/<i>n</i> space group; unit cell parameters: <i>a</i> = 5.78160(10) Å, <i>b</i> = 15.0976(2) Å, <i>c</i> = 17.3437(3) Å; α = 90°, β = 94.602(2)°, γ = 90°; <i>V</i> = 1509.02(4) Å<sup>3</sup>, <i>Z</i> = 4, ρ<sub>calc</sub> = 3.106 g/cm<sup>3</sup>. Some features of the thermolysis of terephthalic acid and its iodine derivatives are described. Diiodoterephthalic acid is the least thermally stable, tetraiodoterephthalic acid is the most stable. The iodinated terephthalic acids have similar heats of fusion. The largest amount of carbon residue is formed during the decomposition of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid.</p>\",\"PeriodicalId\":668,\"journal\":{\"name\":\"Journal of Structural Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2024-07-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Structural Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1134/s0022476624070060\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Structural Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0022476624070060","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Structure of 2,3,5,6-Tetraiodo-1,4-Benzenedicarboxylic Acid and Features of the Thermolysis of Iodinated Terephthalic Acids
Abstract
The crystal structure of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid dihydrate is described and the following structural features are established by XRD: C8H6I4O6, M 705.73; monoclinic crystal system, P21/n space group; unit cell parameters: a = 5.78160(10) Å, b = 15.0976(2) Å, c = 17.3437(3) Å; α = 90°, β = 94.602(2)°, γ = 90°; V = 1509.02(4) Å3, Z = 4, ρcalc = 3.106 g/cm3. Some features of the thermolysis of terephthalic acid and its iodine derivatives are described. Diiodoterephthalic acid is the least thermally stable, tetraiodoterephthalic acid is the most stable. The iodinated terephthalic acids have similar heats of fusion. The largest amount of carbon residue is formed during the decomposition of 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid.
期刊介绍：
Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
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