Fig. 6
Molecular structures of nido-carboranyl oxindole 2 and amidine 3 with displacement thermal ellipsoids are drawn at 50% probability level. Only the \(\textit{S}_{\textrm{p}}\)-enantiomers are shown. The bond lengths inside the seven-membered ring featuring an intramolecular dihydrogen bond (1.738 Å) is indicated. Detailed crystallographic parameters can be found in the Supporting Information.
