“…Firstly, we studied the reaction of the transient terminal phosphinidene complex 2, generated thermally from 2Hazaphosphirene complex 1, 9 with the N-methyl-thiophene-3carbaldimine 10 (3) as a trapping reagent. Here, azaphosphiridine complex 4 (d 31 P = À37.7, 1 J W,P = 269.4 Hz) and complex 5 (d 31 P = 167.1, 1 J W,P = 257.6 Hz) were formed in a 1 : 1 ratio (Scheme 2).…”