title: Does crystal or gel matter to stereochemistry of a reaction? Silver complexation-promoted solid-state [2+2] reaction of an unsymmetrical olefin.
abstract: Head-to-tail and head-to-head [2+2] photodimerization of an unsymmetrical olefin containing benzimidazole and pyridyl groups was achieved by irradiating Ag(I) complexed olefin in crystalline state and gel state, respectively, in stereoselective manner. The [2+2] reaction indicates that the molecular arrangement in a gel is different from that of a xerogel.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India.
authors.forename: Suman
authors.initials: S
authors.lastname: Samai
authors.forename: Prabir
authors.initials: P
authors.lastname: Ghosh
authors.forename: Kumar
authors.initials: K
authors.lastname: Biradha
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D061565:Cycloaddition Reaction; D019281:Dimerization; D005782:Gels / Q000737:chemistry*; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D012834:Silver / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000475:Alkenes; D056831:Coordination Complexes; D005782:Gels; D012834:Silver