1, 5, 9-Tristannacyclododecanes as Lewis Acids. Novel Structure of a Chloride Complex

Klaus Jurkschat, Henry G. Kuivila, Shuncheng Liu, Jon A. Zubieta

Research output: Contribution to journalArticle

77 Scopus citations

Abstract

A simple procedure for the preparation of substituted 1, 5, 9-tristannacyclododecanes RRSn-(CH2)3SnRR'(CH2)3SnRR(CH2)3 {R = R' = CH3 (3); R = CH3, R' = Cl (4); R = R' = Cl (5)} is described. Their complexing behavior toward chloride was investigated by means of 119Sn NMR spectroscopy. Both 4 and 5 yielded evidence for complex formation but behaved differently from each other. A complex {(5Cl)(Ph3P=N=PPh3)+} (6) was isolated; its structure as determined by single-crystal X-ray diffraction shows that 5 acts as a bidentate Lewis acid via unsymmetrical transannular bridging by a chloride ion. 6 crystallizes in the monoclinic space group P21/c with the unit-cell dimensions a = 11.691 (2) Å, b = 24.652 (4) Å, c = 17.353 (4) Å, β= 92.70 (1)°, V = 5110.6 Å3, and D(calcd) = 1.65 g/cm-3 for Z = 4. The structure was refined to a final R value of 0.039 for 4003 independent reflections.

Original languageEnglish (US)
Pages (from-to)2755-2759
Number of pages5
JournalOrganometallics
Volume8
Issue number12
DOIs
StatePublished - Dec 1989
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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