TY - JOUR
T1 - 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]
AU - Engelhardt, Lutz M.
AU - Jolly, Brian S.
AU - Lappert, Michael F.
AU - Raston, Colin L.
AU - White, Allan H.
PY - 1988/3/1
Y1 - 1988/3/1
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=37049076395&partnerID=8YFLogxK
U2 - 10.1039/C39880000336
DO - 10.1039/C39880000336
M3 - Article
SN - 0022-4936
SP - 336
EP - 338
JO - Journal of the Chemical Society, Chemical Communications
JF - Journal of the Chemical Society, Chemical Communications
IS - 5
ER -