TY - JOUR
T1 - A Triptycene Complex of Tin(II)
T2 - [(C20H14)SnCI(AICI4)]2
AU - Schmidbaur, Hubert
AU - Probst, Thomas
AU - Steigelmann, Oliver
PY - 1991/9/1
Y1 - 1991/9/1
N2 - Triptycene (C20H14) reacts with equimolar quantities of anhydrous SnCl2 and AlC13 in benzene to give a crystalline complex [(C20H14)SnCl(AlCl4)]2•2C6H6. [Triclinic, space group P1, a = 10.404 (3) Å, b = 13.343 (3) Å, c = 11.194 (2) Å, α = 98.63 (2)°, β = 109.23 (2)°, γ = 105.77 (2)°, V = 1375.3 Å3, Z = 1, Rw = 0.032 for 298 refined parameters and 3597 unique reflections with Fo ≥ 4.0σ(Fo).] According to the X-ray crystal structure analysis, the compound features discrete centrosymmetrical dinuclear complex units, with each tin atom η6-coordinated to two neighboring benzene rings of a triptycene ligand but at different metal-ring distances (2.90 and 3.38 Å). The angle between the two coordinated arene rings is contracted to 108.2°, as compared to 120° in the parent hydrocarbon. The ψ-octahedral coordination sphere of the Sn(II) centers is completed by two tin-bridging chlorine atoms and a chelating tetrachloroaluminate ligand. The benzene of crystallization is not engaged in metal complexation. A lead(II) complex [(C20H14)Pb-(AlCl4)2-0.5C6H6] has also been prepared and characterized by analytical data.
AB - Triptycene (C20H14) reacts with equimolar quantities of anhydrous SnCl2 and AlC13 in benzene to give a crystalline complex [(C20H14)SnCl(AlCl4)]2•2C6H6. [Triclinic, space group P1, a = 10.404 (3) Å, b = 13.343 (3) Å, c = 11.194 (2) Å, α = 98.63 (2)°, β = 109.23 (2)°, γ = 105.77 (2)°, V = 1375.3 Å3, Z = 1, Rw = 0.032 for 298 refined parameters and 3597 unique reflections with Fo ≥ 4.0σ(Fo).] According to the X-ray crystal structure analysis, the compound features discrete centrosymmetrical dinuclear complex units, with each tin atom η6-coordinated to two neighboring benzene rings of a triptycene ligand but at different metal-ring distances (2.90 and 3.38 Å). The angle between the two coordinated arene rings is contracted to 108.2°, as compared to 120° in the parent hydrocarbon. The ψ-octahedral coordination sphere of the Sn(II) centers is completed by two tin-bridging chlorine atoms and a chelating tetrachloroaluminate ligand. The benzene of crystallization is not engaged in metal complexation. A lead(II) complex [(C20H14)Pb-(AlCl4)2-0.5C6H6] has also been prepared and characterized by analytical data.
UR - http://www.scopus.com/inward/record.url?scp=0006503137&partnerID=8YFLogxK
U2 - 10.1021/om00055a037
DO - 10.1021/om00055a037
M3 - Article
AN - SCOPUS:0006503137
SN - 0276-7333
VL - 10
SP - 3176
EP - 3179
JO - Organometallics
JF - Organometallics
IS - 9
ER -