Figure 5: Role of lithium halides in the synthesis of organocuprates.
From: Unravelling the hidden link of lithium halides and application in the synthesis of organocuprates
(a) XANES spectra of CuCN (black), CuBr+1.0 eq LiBr (red) and CuBr2 (blue) with excess nBuLi in THF under −78 °C. (b) EXAFS spectra of CuCN (black), CuBr+1 eq LiBr (red) and CuBr2 (blue) with excess nBuLi in THF under −78 °C. (c) Fitting results of R-space k2-weighted EXAFS spectra of CuBr+1 equiv LiBr in 5.0 equiv nBuLi THF solution (2.957 Å−1<k<11.145 Å−1 and 1.172 Å<R<1.914 Å).
