Crystal structure of ({4-[(4-bromo-phen-yl)ethyn-yl]-3,5-di-ethyl-phen-yl}ethyn-yl)triiso-propyl-silane

Caiyun Shu; Graeme J Moxey; Adam Barlow; Mahbod Morshedi

doi:10.1107/S2056989015007252

Crystal structure of ({4-[(4-bromo-phen-yl)ethyn-yl]-3,5-di-ethyl-phen-yl}ethyn-yl)triiso-propyl-silane

Acta Crystallogr E Crystallogr Commun. 2015 Apr 18;71(Pt 5):o321-2. doi: 10.1107/S2056989015007252. eCollection 2015 May 1.

Authors

Caiyun Shu¹, Graeme J Moxey², Adam Barlow³, Mahbod Morshedi³

Affiliations

¹ School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China.
² School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China ; Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.
³ Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia.

Abstract

The title compound, C29H37BrSi, was synthesized by the Sonogashira coupling of [(3,5-diethyl-4-ethynylphen-yl)ethyn-yl]triiso-propyl-silane with 4-bromo-1-iodo-benzene. In the structure, the two phenyl rings are nearly parallel to each other with a dihedral angle of 4.27 (4)°. In the crystal, π-π inter-actions between the terminal and central phenyl rings of adjacent mol-ecules link them in the a-axis direction [perpendicular distance = 3.5135 (14); centroid-centroid distance = 3.7393 (11) Å]. In addition, there are weak C-H⋯π inter-actions between the isopropyl H atoms and the phenyl rings of adjacent mol-ecules.

Keywords: bromoarene; crystal structure; oligo(phenyleneethynylene); trialkylsilylacetylene.