Christian Heiser , Kurt Merzweiler , V. Jancik (Editor)
{"title":"两种含有 N-杂环碳烯 (NHC) 配体的醋酸铬（II）络合物。","authors":"Christian Heiser , Kurt Merzweiler , V. Jancik (Editor)","doi":"10.1107/S2056989024005796","DOIUrl":null,"url":null,"abstract":"<div><p>The crystal structures of two chromium(II) acetate complexes with N-heterocyclic carbene coligands were determined.</p></div><div><p>Tetrakis(μ-acetato-κ<sup>2</sup><em>O</em>:<em>O</em>′)bis{[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene-κ<em>C</em><sup>2</sup>]chromium(II)} tetrahydrofuran disolvate, [Cr<sub>2</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>4</sub>(C<sub>27</sub>H<sub>36</sub>N<sub>4</sub>)<sub>2</sub>]·2C<sub>4</sub>H<sub>8</sub>O or [Cr<sub>2</sub>(OAc)<sub>4</sub>(IDipp)<sub>2</sub>]·2C<sub>4</sub>H<sub>8</sub>O (<strong>1</strong>), and tetrakis(μ-acetato-κ<sup>2</sup><em>O</em>:<em>O</em>′)bis{[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene-κ<em>C</em><sup>2</sup>]chromium(II)},{Cr<sub>2</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>4</sub>(C<sub>21</sub>H<sub>24</sub>N<sub>2</sub>)<sub>2</sub>] or [Cr<sub>2</sub>(OAc)<sub>4</sub>(IMes)<sub>2</sub>] (<strong>2</strong>), were synthesized from anhydrous chromium(II) acetate [Cr<sub>2</sub>(OAc)<sub>4</sub>] and the corresponding NHC (NHC = N-heterocyclic carbene) in toluene as solvent. Both complexes crystallize in the triclinic system, space group <em>P</em><figure><img></figure>. The molecular structures consist of Cr<sub>2</sub>(OAc)<sub>4</sub> paddle-wheels that carry two terminal NHC ligands. This leads to a square-pyramidal coordination of the chromium atoms.</p></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"80 7","pages":"Pages 811-815"},"PeriodicalIF":0.5000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223697/pdf/","citationCount":"0","resultStr":"{\"title\":\"Two chromium(II) acetate complexes with N-heterocyclic carbene (NHC) coligands\",\"authors\":\"Christian Heiser , Kurt Merzweiler , V. Jancik (Editor)\",\"doi\":\"10.1107/S2056989024005796\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The crystal structures of two chromium(II) acetate complexes with N-heterocyclic carbene coligands were determined.</p></div><div><p>Tetrakis(μ-acetato-κ<sup>2</sup><em>O</em>:<em>O</em>′)bis{[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene-κ<em>C</em><sup>2</sup>]chromium(II)} tetrahydrofuran disolvate, [Cr<sub>2</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>4</sub>(C<sub>27</sub>H<sub>36</sub>N<sub>4</sub>)<sub>2</sub>]·2C<sub>4</sub>H<sub>8</sub>O or [Cr<sub>2</sub>(OAc)<sub>4</sub>(IDipp)<sub>2</sub>]·2C<sub>4</sub>H<sub>8</sub>O (<strong>1</strong>), and tetrakis(μ-acetato-κ<sup>2</sup><em>O</em>:<em>O</em>′)bis{[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene-κ<em>C</em><sup>2</sup>]chromium(II)},{Cr<sub>2</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>4</sub>(C<sub>21</sub>H<sub>24</sub>N<sub>2</sub>)<sub>2</sub>] or [Cr<sub>2</sub>(OAc)<sub>4</sub>(IMes)<sub>2</sub>] (<strong>2</strong>), were synthesized from anhydrous chromium(II) acetate [Cr<sub>2</sub>(OAc)<sub>4</sub>] and the corresponding NHC (NHC = N-heterocyclic carbene) in toluene as solvent. Both complexes crystallize in the triclinic system, space group <em>P</em><figure><img></figure>. The molecular structures consist of Cr<sub>2</sub>(OAc)<sub>4</sub> paddle-wheels that carry two terminal NHC ligands. This leads to a square-pyramidal coordination of the chromium atoms.</p></div>\",\"PeriodicalId\":7367,\"journal\":{\"name\":\"Acta Crystallographica Section E: Crystallographic Communications\",\"volume\":\"80 7\",\"pages\":\"Pages 811-815\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223697/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Crystallographica Section E: Crystallographic Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S2056989024001439\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Crystallographica Section E: Crystallographic Communications","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2056989024001439","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
Two chromium(II) acetate complexes with N-heterocyclic carbene (NHC) coligands
The crystal structures of two chromium(II) acetate complexes with N-heterocyclic carbene coligands were determined.
Tetrakis(μ-acetato-κ2O:O′)bis{[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene-κC2]chromium(II)} tetrahydrofuran disolvate, [Cr2(C2H3O2)4(C27H36N4)2]·2C4H8O or [Cr2(OAc)4(IDipp)2]·2C4H8O (1), and tetrakis(μ-acetato-κ2O:O′)bis{[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene-κC2]chromium(II)},{Cr2(C2H3O2)4(C21H24N2)2] or [Cr2(OAc)4(IMes)2] (2), were synthesized from anhydrous chromium(II) acetate [Cr2(OAc)4] and the corresponding NHC (NHC = N-heterocyclic carbene) in toluene as solvent. Both complexes crystallize in the triclinic system, space group P. The molecular structures consist of Cr2(OAc)4 paddle-wheels that carry two terminal NHC ligands. This leads to a square-pyramidal coordination of the chromium atoms.
期刊介绍：
Acta Crystallographica Section E: Crystallographic Communications is the IUCr''s open-access structural communications journal. It provides a fast, simple and easily accessible publication mechanism for crystal structure determinations of inorganic, metal-organic and organic compounds. The electronic submission, validation, refereeing and publication facilities of the journal ensure rapid and high-quality publication of fully validated structures. The primary article category is Research Communications; these are peer-reviewed articles describing one or more structure determinations with appropriate discussion of the science.
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