1-[1,4-Bis(but-3-en-1-yl-oxy)]-2,3,4,5-(1,4-dimeth-oxy)pillar[5]arene-1,4-di-bromo-butane 1:1 inclusion complex

Mickey Vinodh; Talal F Al-Azemi

doi:10.1107/S2414314623005886

1-[1,4-Bis(but-3-en-1-yl-oxy)]-2,3,4,5-(1,4-dimeth-oxy)pillar[5]arene-1,4-di-bromo-butane 1:1 inclusion complex

IUCrdata. 2023 Jul 14;8(Pt 7):x230588. doi: 10.1107/S2414314623005886. eCollection 2023 Jul.

Authors

Mickey Vinodh¹, Talal F Al-Azemi¹

Affiliation

¹ Department of Chemistry, Kuwait University, PO Box 5969, Safat 13060, Kuwait.

Abstract

In the title compound, C₅₁H₅₈O₁₀·C₄H₈Br₂, both the host and guest are completed by crystallographic twofold symmetry (one carbon atom of the host lies on the rotation axis). The penta-gonal-shaped macrocycle has a pair of butene-oxy substituents on one of its faces and one mol-ecule of 1,4-di-bromo-butane is encapsulated within the cavity of the pillararene, forming a 1:1 inclusion complex. The terminal alkene parts, which project outwards from the pillararene ring, exhibit positional disorder over two sets of sites in a 0.52 (2): 0.48 (2) ratio. The host and guest inter-act via C-H⋯O, C-H⋯Br and C-H⋯π inter-actions and adjacent host mol-ecules inter-act via C-H⋯O and C-H⋯π bonds.

Keywords: A1/A2-dibutenoxy pillar[5]arene; crystal structure; dibromobutane; host–guest system.

Grants and funding

Funding for this research was provided by: Kuwait University Research Administration (grant No. SC 08/19); RSPU (grant No. GS 03/08; grant No. GS 01/01; grant No. GS 01/03).