A Distibene with Extremely Long Sb=Sb Distance and Related Heavier Dipnictenes from Salt-Free Metathesis Reactions

Clara A. Roller, Berenike Doler, Beate Gabriele Steller, Robert Saf, Roland C. Fischer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Conversions of organoelement diamides, Ar DippE(NMe 2) 2 (E=Sb, Bi; Ar Dipp=C 6H 3-2,6-Dipp 2), with Ph 2SnH 2 as reducing agent gave access to low-valent, heavier group 15 dimers Ar DippSb=SbAr Dipp and Ar DippBi=BiAr Dipp, while only readily removable byproducts (i. e. dihydrogen, amines) and cyclo-(Ph 12Sn 6) are generated during the reaction. Moreover, experiments involving the reaction of organoantimony hydride species Ar* 2SbH (Ar*=C 6H 2-2,6-(Ph 2CH) 2-4-iPr) with Bi(NEt 2) 3 yielded a second novel distibene, Ar*Sb=SbAr*, with the currently longest Sb−Sb bond distance of 2.8605(5) Å in a distibene. In conversions of TbbSnH 3 (Tbb=C 6H 2-2,6-(CH(SiMe 3) 2) 2-4-tBu) with Bi(NEt 2) 3, ligand migration resulted in the isolation of TbbBi=BiTbb. Remarkably, the herein reported novel inorganic coupling route enables preparation and isolation of heavier dipnictenes without the formation of inorganic salts. All four low-oxidation state compounds were isolated and subsequently characterized using state of the art techniques, i. e. X-ray crystallography, NMR and UV/Vis spectroscopy.

Original languageEnglish
Article numbere202300586
Number of pages8
JournalEuropean Journal of Inorganic Chemistry
Volume27
Issue number10
Early online date20 Dec 2023
DOIs
Publication statusPublished - 2 Apr 2024

Keywords

  • Main group chemistry
  • P-block elements
  • Single crystal X-ray diffraction
  • NMR spectroscopy
  • Antimony
  • Bismuth
  • X-ray diffraction
  • Hydrides
  • Main-group elements

ASJC Scopus subject areas

  • Inorganic Chemistry

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