title: Complete 1H and 13C NMR spectral assignment of symmetric and asymmetric bis-spiropyran derivatives.
abstract: (1)H and (13)C NMR spectra of symmetric and asymmetric bis-spiropyrans, Series 1-3, were completely assigned. Especially, the (1)H assignment of asymmetric spiropyrans was achieved by utilizing (1)H-(1)H COSY and nOe experiments. All of the carbons in the dye molecules were investigated through a combination of heteronuclear 2D-shift correlation spectroscopy (HETCOR), together with an attached proton test (APT).
authors.affiliation: Department of New Material Chemistry, Korea University, Jochiwon 339-700, Korea. keum@korea.ac.kr
authors.forename: Sam-Rok
authors.initials: SR
authors.lastname: Keum
authors.forename: Hyo-Jung
authors.initials: HJ
authors.lastname: Roh
authors.forename: Yoon-Ki
authors.initials: YK
authors.lastname: Choi
authors.forename: Soon-Sung
authors.initials: SS
authors.lastname: Lim
authors.forename: Sung-Hoon
authors.initials: SH
authors.lastname: Kim
authors.forename: Kwangnak
authors.initials: K
authors.lastname: Koh
mesh_terms: D001578:Benzopyrans / Q000737:chemistry* / Q000528:radiation effects; D002247:Carbon Isotopes; D003903:Deuterium; D007211:Indoles; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D008968:Molecular Conformation; D009574:Nitro Compounds; D010777:Photochemistry; D011522:Protons; D012015:Reference Standards
chemical_list: D001578:Benzopyrans; D002247:Carbon Isotopes; D007211:Indoles; D009574:Nitro Compounds; D011522:Protons; C088184:spiropyran; D003903:Deuterium