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Brothers from Another Mother: a Borylene and its Dimer are Non-Interconvertible but Connected through Reactivity

Please always quote using this URN: urn:nbn:de:bvb:20-opus-157125
  • The self-stabilizing, tetrameric cyanoborylene [(cAAC)B(CN)]4 (I, cAAC = 1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidin-2-ylidene) and its diborene relative, [(cAAC)(CN)B=B(CN)(cAAC)] (II), both react with disulfides and diselenides to yield the corresponding cAAC-supported cyanoboron bis(chalcogenides). Furthermore, reactions of I or II with elemental sulfur and selenium in various stoichiometries provided access to a variety of cAAC- stabilized cyanoboron-chalcogen heterocycles, including a unique dithiaborirane, a diboraselenirane,The self-stabilizing, tetrameric cyanoborylene [(cAAC)B(CN)]4 (I, cAAC = 1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidin-2-ylidene) and its diborene relative, [(cAAC)(CN)B=B(CN)(cAAC)] (II), both react with disulfides and diselenides to yield the corresponding cAAC-supported cyanoboron bis(chalcogenides). Furthermore, reactions of I or II with elemental sulfur and selenium in various stoichiometries provided access to a variety of cAAC- stabilized cyanoboron-chalcogen heterocycles, including a unique dithiaborirane, a diboraselenirane, 1,3-dichalcogena-2,4-diboretanes, 1,3,4-trichalcogena- 2,5-diborolanes and a rare six-membered 1,2,4,5-tetrathia-3,6-diborinane. Stepwise addition reactions and solution stability studies provided insights into the mechanism of these reactions and the subtle differences in reactivity observed between I and II.show moreshow less

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Metadaten
Author: Dominic Auerhammer, Merle ArrowsmithORCiD, Julian Böhnke, Holger BraunschweigORCiD, Rian D. DewhurstORCiD, Thomas Kupfer
URN:urn:nbn:de:bvb:20-opus-157125
Document Type:Preprint
Faculties:Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie
Language:English
Parent Title (English):Chemical Science
Year of Completion:2018
Source:Chememical Science, 2018, Advance Article, DOI: 10.1039/C7SC04789D
DOI:https://doi.org/10.1039/C7SC04789D
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie
Tag:boron; borylenes; carbenes; chalcogens; diborenes
Release Date:2018/01/31
EU-Project number / Contract (GA) number:669054
OpenAIRE:OpenAIRE
Licence (German):License LogoDeutsches Urheberrecht