Correlating reactivity and selectivity to cyclopentadienyl ligand properties in Rh(III)-catalyzed C-H activation reactions: an experimental and computational study by Piou, T, Romanov-Michailidis, F, Romanova-Michaelides, M, Jackson, K, Semakul, N, Taggart, T, Newell, B, Rithner, C, Paton, R, Rovis, T