Andrea O’Reilly , Andrew M.S. Booth , Claire L. McMullin , J. Robin Fulton , Martyn P. Coles
{"title":"1,4-Dialumination of benzene by sodium and potassium aluminyls","authors":"Andrea O’Reilly , Andrew M.S. Booth , Claire L. McMullin , J. Robin Fulton , Martyn P. Coles","doi":"10.1016/j.poly.2024.117226","DOIUrl":null,"url":null,"abstract":"<div><div>Under forcing conditions, the aluminyls [AM{Al(NON)}]<sub>2</sub> ([NON]<sup>2−</sup> = [O(SiMe<sub>2</sub>NDipp)<sub>2</sub>]<sup>2−</sup>, Dipp = 2,6-<em>i</em>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>, AM = Na, K) react with benzene to give the 1,4-phenylene di(hydrido)aluminate complexes, AM<sub>2</sub>[1,4-{Al(NON)(H)}<sub>2</sub>(C<sub>6</sub>H<sub>4</sub>)]. Crystal structure analysis of the products shows that the ’Al(NON)(H)’ groups are in the plane of the <em>para</em>-substituted C<sub>6</sub>-ring, with the alkali metals above and below forming an inverse sandwich structure. Density functional theory calculations were performed to analyse the mechanism leading to the di-substituted product. Results identify a viable dimeric pathway and show that each alumination step is preceded by a Meisenheimer-type intermediate leading to the observed <em>trans</em>-dialuminated product.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"264 ","pages":"Article 117226"},"PeriodicalIF":2.4000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0277538724004029/pdfft?md5=b3edc196e3b31541b06399aa946daefc&pid=1-s2.0-S0277538724004029-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polyhedron","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0277538724004029","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Under forcing conditions, the aluminyls [AM{Al(NON)}]2 ([NON]2− = [O(SiMe2NDipp)2]2−, Dipp = 2,6-iPr2C6H3, AM = Na, K) react with benzene to give the 1,4-phenylene di(hydrido)aluminate complexes, AM2[1,4-{Al(NON)(H)}2(C6H4)]. Crystal structure analysis of the products shows that the ’Al(NON)(H)’ groups are in the plane of the para-substituted C6-ring, with the alkali metals above and below forming an inverse sandwich structure. Density functional theory calculations were performed to analyse the mechanism leading to the di-substituted product. Results identify a viable dimeric pathway and show that each alumination step is preceded by a Meisenheimer-type intermediate leading to the observed trans-dialuminated product.
期刊介绍:
Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry.
Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.