Complete 1H and 13C NMR spectral assignment of symmetric and asymmetric bis-spiropyran derivatives.
(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).
Keum
Sam-Rok
SR
Department of New Material Chemistry, Korea University, Jochiwon 339-700, Korea. keum@korea.ac.kr
Roh
Hyo-Jung
HJ
Choi
Yoon-Ki
YK
Lim
Soon-Sung
SS
Kim
Sung-Hoon
SH
Koh
Kwangnak
K
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
D001578:Benzopyrans; D002247:Carbon Isotopes; D007211:Indoles; D009574:Nitro Compounds; D011522:Protons; C088184:spiropyran; D003903:Deuterium