title: Crystal structure of 7,7-dimethyl-6-methyl-idenetri-cyclo-[6.2.1.0(1,5)]undecane-2-carb-oxy-lic acid.
abstract: In the title compound, C15H22O2, both five-membered rings display an envelope conformation whereas the six-membered ring displays a chair conformation. In the crystal, pairs of O-H⋯O hydrogen bonds between carb-oxy-lic groups link mol-ecules, related by a twofold rotation axis, into supra-molecular dimers.
authors: Unité de recherche VARENBIOMOL, Constantine 1 University, Constantine 25000, Algeria.
authors: Noureddine
authors: N
authors: Beghidja
authors: Unité de recherche VARENBIOMOL, Constantine 1 University, Constantine 25000, Algeria.
authors: Samir
authors: S
authors: Benayache
authors: Unité de recherche VARENBIOMOL, Constantine 1 University, Constantine 25000, Algeria.
authors: Fadila
authors: F
authors: Benayache
authors: School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK.
authors: David W
authors: DW
authors: Knight
authors: School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK.
authors: Benson M
authors: BM
authors: Kariuki
keywords: crystal structure; hydrogen bonding; inula graveolens