Structure of bromo(4-iodo-1,2,3,4-tetraphenyl-1,3-butadienyl)diphenyltin(IV)
Abstract
<h2>Acta Crystallographica Section C</h2><h3>Crystal Structure Communications</h3><h3>0108-2701</h3> <h2>short format (metal-organic compounds)</h2> Volume 46 Part 9 Pages 1743-1745 September 1990 <h2>Structure of bromo(4-iodo-1,2,3,4-tetraphenyl-1,3-butadienyl)diphenyltin(IV)</h2> C. R. A. Muchmore and M. J. Heeg Acta Cryst. (1990). C46, 1743-1745 Structure of Bromo(4-iodo- 1,2,3,4-tetraphenyl-l,3-butadienyl)diphenyltin(IV) BY CHRISTINE R. A. MUCHMORE The Upjohn Company, Kalamazoo, Michigan 49001, USA AND MARY JANE HEEG* Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA (Received 3 August 1989; accepted 28 February 1990) Abstract. [SnBr(C6Hs)2(C28H2oI)], M,=836-19, tri- clinic, P1, a= 10.336(4), b= 10.582(5), c= 16.615 (8)/~, a=94-65(4), fl=98-80(3), y= 108.23 (4)°, V= 1690 (1)/~3, Z= 2, Dx = 1.643 gcm-3, a(Mo Ka) = 0-71073 A, /z = 27.90 cm- i, F(000) = 816, T = 298 (2) K, R = 0-032 for 4718 unique observed reflections. The butadiene is g-bound to the Sn atom and the pendent I substit- uent of the butadiene is involved in a intramolecular interaction with the Sn, having Sn...I = 3.8835 (5)/~ (van der Waals radii for Sn and I are commonly 2.2 and 2.0 A respectively). Whether this Sn...I interac- tion is attractive (bonding) or repulsive (steric), the presence of the I atom distorts the Sn coordination sphere from the ideal tetrahedron towards