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Synthesis, characterization and in‐vitro antitumour activity of dibutyltin carboxylates involving the perfluorophenyl moiety: Crystal structure of the dimeric bis[(4‐fluoro‐ and pentafluoro‐benzoato)di‐n‐butyltin] oxides

par Gielen, Marcel ;Tiekink, Edward E.R.T.;Bouhdid, Abdeslam;De Vos, Dick;Biesemans, Monique;Verbruggen, Ingrid;Willem, Rudolph
Référence Applied organometallic chemistry, 9, 7, page (639-648)
Publication Publié, 1995

Article révisé par les pairs

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Résumé :

Crystal structure determinations of {[(F5C6COO)Bu2Sn]2O}2 and {[(4‐F‐C6H4COO)‐Bu2Sn]2O}2 show that the structures are similar and feature central Bu4Sn2O2 units with two Bu2Sn groups connected by bridging oxygen atoms. Each pair of exo‐ and endo‐cyclic tin atoms is linked by an almost symmetrically bridging carboxylate group, with the two remaining groups attached to the exocyclic tin atom only. Crystals of {[(F5C6COO)Bu2Sn]2O}2 are triclinic, space group P1, with unit cell dimensions a = 12.425(3) Å, b = 13.090(5) Å, c = 11.697(3) Å, α = 95.31(3)°, β = 93.28(2)°, γ = 113.01(2)°, V = 1734(1) Å3, Z = 1. Crystals of {[(4‐F‐C6H4COO)Bu2Sn]2O}2, are also triclinic, space group PI, a = 12.599(6) Å, b= 25.359(4) Å, c = 11.480(4) Å, α = 91.44(3)°, β = 114.77(3)°, γ=97.43(3)°, V=3289(2) Å3, Z=2. The structures were refined to final R= 0.046, Rw = 0.046 for 4312 reflections with I≥ 3.0 σ(l) for {[(F5C6COO)Bu2Sn]2O}2 and R=0.061, Rw=0.068 for 4112 reflections with l≥3.0 σ(l for {[(4‐F‐C6H4COO)Bu2Sn]2O}2. Copyright © 1995 John Wiley & Sons, Ltd.