The linear relationship between the one-bond spin—spin coupling constants 1JCC and the product of the electronegativities Ex·Ey of substituents at the CC triple bond

Can One Assess the π Character of a C–C

Can One Assess the π Character of a C–C Bond with the Help of the NMR Spin–Spin Coupling Constants?

✍ Dieter Cremer; Elfi Kraka; Anan Wu; Wolfgang Lüttke 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 460 KB

## Abstract Measured one‐bond spin–spin coupling constants (SSCC) ^1^__J__(CC) can be used to describe the nature of the C–C bond, provided one is able to separate the various coupling mechanisms leading to ^1^__J__(CC). The Fermi‐contact (FC) term probes the first‐order density at the positions of