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Transmetallation reaction of cyclomercurated anils of benzoylferrocene with metallic tin.:X-ray crystal structure of [SnCl 2{( η 5-C 5H 5)Fe( η 5-C 5H 3CPhNC 6H 4-4-CH 3)} 2]

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
564
Identifiers
DOI: 10.1016/s0022-328x(98)00634-2
Keywords
  • Transmetallation
  • Mercury
  • Tin
  • Ferrocene
  • Anils

Abstract

Abstract The transmetallation reaction of cyclomercurated anils of benzoylferrocene [HgCl{( η 5-C 5H 5)Fe( η 5-C 5H 3CPhNAr)}] (Ar=substituted phenyl groups) with metallic tin was carried out in refluxing xylene to give dichlorobisferrocenyltin(IV) [SnCl 2{( η 5-C 5H 5)Fe( η 5-C 5H 3CPhNAr)} 2]. The composition and structure of products were characterized by elemental analysis, IR, 1H-NMR and 2D NOESY spectra. The molecular structure of [SnCl 2{( η 5-C 5H 5)Fe( η 5-C 5H 3CPh=NC 6H 4-4-CH 3)} 2] was determined by single crystal X-ray analysis. The distances of N and Sn are 2.519(3) and 2.501(3) Å, respectively, shorter than the sum of van der Waals radii of N and Sn (3.6 Å), indicating an intramolecular coordination of N and Sn. The 119Sn-NMR spectra were recorded, and a satisfactory linear relationship was found to exist between the 119Sn shifts ( δ) and Hammett substituent constants.

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