Maurice M. Andrey, André Bütikofer, Robin Wolf, Stefan A. Künzi and Peter Chen*,
{"title":"基于双金属 Ni-Ga 框架的 Ni(0) 甲基络合物","authors":"Maurice M. Andrey, André Bütikofer, Robin Wolf, Stefan A. Künzi and Peter Chen*, ","doi":"10.1021/acs.organomet.4c00111","DOIUrl":null,"url":null,"abstract":"<p >The Ni(0) methyl complex <b>MeNiGaL</b> was prepared and characterized by XRD, <sup>1</sup>H NMR, <sup>13</sup>C NMR, <sup>31</sup>P NMR, ESI-MS, and UV–vis. The compound can be prepared from the 16-valence electron complex <b>NiGaL</b> by addition of MeLi, yielding the corresponding lithium salt. <b>NiGaL</b> is a close derivative of a complex that has been previously reported by Lu et al. The title compound represents a rare example of a Ni(0) alkyl complex. The complex is based on a bimetallic, tripodal framework featuring a Ni–Ga bond. The methyl complex, isolated as its Li(THF)<sub>4</sub> salt, shows no interaction between the lithium cation and the methyl anion in the solid state. UV–vis titration experiments indicate reversible dissociation of MeLi in solution. Attempts to prepare the corresponding neopentyl or CH<sub>2</sub>EMe<sub>3</sub> complexes (E = N, P), as possible intermediates or analogues thereof in the nickel catalyzed cyclopropanation of unactivated alkenes with NMe<sub>4</sub>OTf/BuLi, were unsuccessful.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Ni(0) Methyl Complex Based on a Bimetallic Ni–Ga Framework\",\"authors\":\"Maurice M. Andrey, André Bütikofer, Robin Wolf, Stefan A. Künzi and Peter Chen*, \",\"doi\":\"10.1021/acs.organomet.4c00111\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The Ni(0) methyl complex <b>MeNiGaL</b> was prepared and characterized by XRD, <sup>1</sup>H NMR, <sup>13</sup>C NMR, <sup>31</sup>P NMR, ESI-MS, and UV–vis. The compound can be prepared from the 16-valence electron complex <b>NiGaL</b> by addition of MeLi, yielding the corresponding lithium salt. <b>NiGaL</b> is a close derivative of a complex that has been previously reported by Lu et al. The title compound represents a rare example of a Ni(0) alkyl complex. The complex is based on a bimetallic, tripodal framework featuring a Ni–Ga bond. The methyl complex, isolated as its Li(THF)<sub>4</sub> salt, shows no interaction between the lithium cation and the methyl anion in the solid state. UV–vis titration experiments indicate reversible dissociation of MeLi in solution. Attempts to prepare the corresponding neopentyl or CH<sub>2</sub>EMe<sub>3</sub> complexes (E = N, P), as possible intermediates or analogues thereof in the nickel catalyzed cyclopropanation of unactivated alkenes with NMe<sub>4</sub>OTf/BuLi, were unsuccessful.</p>\",\"PeriodicalId\":56,\"journal\":{\"name\":\"Organometallics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-05-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Organometallics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.organomet.4c00111\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organometallics","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.organomet.4c00111","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
A Ni(0) Methyl Complex Based on a Bimetallic Ni–Ga Framework
The Ni(0) methyl complex MeNiGaL was prepared and characterized by XRD, 1H NMR, 13C NMR, 31P NMR, ESI-MS, and UV–vis. The compound can be prepared from the 16-valence electron complex NiGaL by addition of MeLi, yielding the corresponding lithium salt. NiGaL is a close derivative of a complex that has been previously reported by Lu et al. The title compound represents a rare example of a Ni(0) alkyl complex. The complex is based on a bimetallic, tripodal framework featuring a Ni–Ga bond. The methyl complex, isolated as its Li(THF)4 salt, shows no interaction between the lithium cation and the methyl anion in the solid state. UV–vis titration experiments indicate reversible dissociation of MeLi in solution. Attempts to prepare the corresponding neopentyl or CH2EMe3 complexes (E = N, P), as possible intermediates or analogues thereof in the nickel catalyzed cyclopropanation of unactivated alkenes with NMe4OTf/BuLi, were unsuccessful.
期刊介绍:
Organometallics is the flagship journal of organometallic chemistry and records progress in one of the most active fields of science, bridging organic and inorganic chemistry. The journal publishes Articles, Communications, Reviews, and Tutorials (instructional overviews) that depict research on the synthesis, structure, bonding, chemical reactivity, and reaction mechanisms for a variety of applications, including catalyst design and catalytic processes; main-group, transition-metal, and lanthanide and actinide metal chemistry; synthetic aspects of polymer science and materials science; and bioorganometallic chemistry.