Gas-Phase Studies of NMR Shielding and Indirect Spin-Spin Coupling in ¹³C-Enriched Ethane and Ethylene.

ABSTRACT: ¹³C and ¹H NMR spectra were observed as the function of density in 1,2-¹³C-enriched ethane and ethylene for the pure gaseous compounds and their binary mixtures with xenon and carbon dioxide gases as the solvents. All the chemical shifts and indirect spin-spin couplings were linearly dependent on the solvent density. The appropriate NMR parameters (σ and ⁿJ) in isolated ¹³C₂H₆ and ¹³C₂H₄ molecules and the coefficients responsible for the binary molecular interactions were determined and compared with previous similar measurements and selected calculated shielding data. The newly obtained ¹³C shielding values in the isolated ethane and ethylene molecules suggest visible s

SUBMITTER: Wilczek M 

PROVIDER: S-EPMC11434548 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature