title: A pi-stacked phenylacetylene and 1,3,5-triazine heterodimer: a combined spectroscopic and ab initio investigation.
abstract: The IR-UV double resonance spectroscopy of a complex between phenylacetylene and 1,3,5-triazine reveals that the acetylene C-H group of phenylacetylene is minimally perturbed due to its interaction with 1,3,5-triazine. Further, the IR spectrum clearly indicates that 1,3,5-triazine primarily interacts with pi-electron density of the benzene ring in phenylacetylene. Geometries obtained at the DFT/MO6-2X and MP2/aug-cc-pVDZ levels, combined with highly accurate energy calculations at the complete basis set (CBS) limit of CCSD(T), establish formation of the displaced pi-stacked heterodimer between phenylacetylene and 1,3,5-triazine.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India.
authors.forename: Mridula
authors.initials: M
authors.lastname: Guin
authors.forename: G Naresh
authors.initials: GN
authors.lastname: Patwari
authors.forename: S
authors.initials: S
authors.lastname: Karthikeyan
authors.forename: Kwang S
authors.initials: KS
authors.lastname: Kim
mesh_terms: D000114:Acetylene / Q000031:analogs & derivatives* / Q000737:chemistry; D019281:Dimerization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014227:Triazines / Q000737:chemistry*
chemical_list: D014227:Triazines; C044736:phenylacetylene; D000114:Acetylene