Experimental and Theoretical Estimates of Sigma and Pi Electron Contributions to Long-range Spin–Spin Coupling Constants in Coumarin and its Methyl Derivatives
作者： J. B. Rowbotham , T. Schaefer
DOI: 10.1139/V73-141
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摘要: A full analysis of the p.m.r. spectra coumarin and five its methyl derivatives allows assignment σ π electron components to inter-ring proton–proton spin–spin coupling constant...
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