The first monomeric crystalline tin(II) alkyls; X-ray structures of the β-N-functionalised alkyls Sn(R)X [R̄ = C̄(SiMe3) 2C5H4N-2 and X̄ = R̄, Cl̄, or N̄(SiMe3)2]

Lutz M. Engelhardt, Brian S. Jolly, Michael F. Lappert, Colin L. Raston, Allan H. White

Research output: Contribution to journalArticlepeer-review

Abstract

Monomeric 2-pyridylbis(trimethylsilyl)methyltin(II) compounds Sn(R)X [R̄ = C̄(SiMe3)2C5H4N-2 and X̄ = R̄ (1), C̄l (2), or N̄(SiMe3) 2 (3)] were prepared from (LiR)2 and (a) SnCl2 or Sn(OC6H3But2-2,6)2 (1), (b) 2SnCl2 (2), or (c) Sn[N(SiMe3)2] 2 (3); their X-ray structures show that the R̄ ligands are invariably bonded to tin in a chelating fashion in the crystal with Sn-C and Sn-NC5H4 bond lengths of 2.35(2) and 2.42(2) (1), 2.32(2) and 2.27(3) (2), and 2.356(8) and 2.299(5) Å (3), respectively, but in C6D5CD3 solution there appear to be (n.m.r.) C5H4N-Sn dissociative processes (ΔG‡ ca. 43 ± 2 kJ mol-1).

Original languageEnglish
Pages (from-to)336-338
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number5
DOIs
Publication statusPublished - 1 Mar 1988
Externally publishedYes

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