The synthesis and characterisation of some Group 14 compounds containing the 2,4,6-(CF₃)₃C₆H₂, 2,6-(CF₃)₂C₆H₃ or 2,4-(CF₃)₂C₆H₃ ligands

Batsanov, A.S.; Cornet, S.M.; Dillon, K.B.; Goeta, A.E.; Thompson, A.L.; Xue, B.Y.

Abstract

New (aryl)(2)ECl2 and (aryl)ECl3 compounds [E = Si, Ge or Sn; aryl = 2,4,6-(CF3)(3)C6H2(Ar), 2,6-(CF3)(2)C6H3 (Ar') and/or 2,4-(CF3)(3)C6H3 (Ar")] were prepared by reactions of ECl4 with 2 equivalents of ArLi or of a Ar'Li/Ar"Li mixture. The latter gives predominantly the less sterically hindered product Ar"2ECl2 for E = Si or Ge, but Ar'2SnCl2 for the larger central atom. The products were characterised by elemental analysis, F-19 and (where appropriate) Sn-119 NMR spectroscopy, and single-crystal X-ray diffraction for Ar"2SiCl2, ArGeCl3, Ar2GeCl2, Ar"2GeCl2, Ar2SnCl2 and Ar'2SnCl2. For E = Si the synthesis is complicated by Cl/F exchange: besides Ar'2SiCl2 and Ar"2SiCl2, F-19 NMR spectroscopy identified in solution Ar'2SiF2 and Ar'2SiF2. The latter was isolated and its X-ray structure determined. In all compounds, the E atom has a strongly distorted tetrahedral coordination, supplemented by short intramolecular E...F contacts (secondary coordination) with o-CF3 group(s).

Citation

Batsanov, A., Cornet, S., Dillon, K., Goeta, A., Thompson, A., & Xue, B. (2003). The synthesis and characterisation of some Group 14 compounds containing the 2,4,6-(CF₃)₃C₆H₂, 2,6-(CF₃)₂C₆H₃ or 2,4-(CF₃)₂C₆H₃ ligands. Dalton Transactions, 2003(12), 2496-2502. https://doi.org/10.1039/b302544f

• Journal Article Type: Article
• Acceptance Date: Apr 15, 2003
• Online Publication Date: May 9, 2003
• Publication Date: 2003
• Deposit Date: Apr 20, 2007
• Journal: Dalton Transactions
• Print ISSN: 1477-9226
• Electronic ISSN: 1477-9234
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 2003
• Issue: 12
• Pages: 2496-2502
• DOI: https://doi.org/10.1039/b302544f
• Public URL: https://durham-repository.worktribe.com/output/1603685