Attachment to manganese or cobalt of a bulky tri(organosilyl)methly ligand containing an NME2 or an OMe donor group

Al-Juaid S. S., Eaborn C., El-Hamruni S. M., Hitchcock P. B., Smith J., Sözerli Can S. E.

Journal of Organometalic Chemistry, vol.649, no.2, pp.121-127, 2002 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 649 Issue: 2
  • Publication Date: 2002
  • Doi Number: 10.1016/s0022-328x(01)01405-x
  • Journal Name: Journal of Organometalic Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.121-127
  • Keywords: organomanganese, organocobalt, bulky ligands, grignard analogues
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

The organolithium compound Li(THF)2{C(SiMe3) 2(SiMe2NMe2)} reacted with one equivalent of MnCl2 to give (4) and with 0.5 equivalent of MnCl2 to give Mn{C(SiMe3)2(SiMe2NMe2)}2 together with a small amount of the MnIII compound [Mn(μ-O){C(SiMe3)2 (SiMe2NMe2)}]2 (6) formed by adventitious admission of air. With CoBr2, the compound [Co(μ-Br){C(SiMe3)2(SiMe2NMe2)}]2 (7) was obtained. The reaction between the lithium compound Li(THF)2{C(SiMe3)2(SiMe2OMe)} and MnCl2 in THF gave [Mn(THF)(μ-Cl){C(SiMe3)2 (SiMe2OMe)}]2 (5). The crystal structures of compounds 4, 5, 6 and 7 were determined. Compounds 4 and 5 are the first manganese analogues of Grignard reagents containing Mn-C σ-bonds to be characterised in the solid state. © 2002 Elsevier Science B.V. All rights reserved.