Topological analyses and bond characterization of 1,3,5,7-tetra-tert-butyl-s-indacene: a weak Csp3H…H-Csp2-type dihydrogen interaction

Topological analyses of experimental and theoretical calculated electron densities of 1,3,5,7-tetra-tert-butyl-s-indacene provide bond characterizations of the chemical bond and of the pidelocalization. A weak Csp3-H…H-Csp2-type intramolecular dihydrogen interaction (DHI) is identified through this analysis.