“…The Tolman cone angle allows to evaluate the catalytic activity of organometallics, as described elsewhere [52][53][54]. The cone angles were calculated to 167 (3 0 ), 169 (3 00 ), 180 (4 with P1), 162 (4 with P2), 166 (6b 0 with P1), 170 (6b 0 with P2), 166 (6b 00 ), 163 (7 with P1), and 153°(7 with P2) ( Table 3) using the program STERIC [55,56] implying larger cone angles than PPh 3 (145°) [47].…”