title: Crystal structure of the cage derivative penta-cyclo-[5.4.0.0(2,6).0(3,10).0(5,9)]undeca-8,11-dione ethyl-ene di-thio-ketal.
abstract: The title penta-cyclo-undecane cage derivative, C13H14OS2, was identified during a thio-ketalization reaction. The reaction selectively gave the title compound and the product corresponding to bis-ketal was not formed. The title compound exhibits unusual Csp (3)-Csp (3) single bond lengths ranging from 1.495 (3) to 1.581 (2) and strained bond angles as small as 89.29 (12) and as large as 115.11 (11)°.
authors.affiliation: Department of Chemistry, Indian Institute of Technology - Bombay, Powai, Mumbai 400 076, India.
authors.forename: Sambasivarao
authors.initials: S
authors.lastname: Kotha
authors.affiliation: Department of Chemistry, Indian Institute of Technology - Bombay, Powai, Mumbai 400 076, India.
authors.forename: Nampalli
authors.initials: N
authors.lastname: Sreenivasachary
authors.affiliation: Department of Chemistry, Indian Institute of Technology - Bombay, Powai, Mumbai 400 076, India.
authors.forename: Deepak
authors.initials: D
authors.lastname: Deodhar
authors.affiliation: Department of Chemistry, Indian Institute of Technology - Bombay, Powai, Mumbai 400 076, India.
authors.forename: Mobin
authors.initials: M
authors.lastname: Shaikh
keywords: bis-ketal; crystal structure; penta­cyclo­undecane cage derivative