“…2,2′‐Carbonylbis( N ‐phenylhydrazinecarbothioamide) ( 3n ): White solid; Yield: 82%; m.p: 209–211°C (reported; 211–212°C [ 23 ] ); FT‐IR (KBr) ʋ max (cm −1 ): 3348, 3323, 3132 (N–H), 1659 (C═O), 1204 (C═S); 1 H‐NMR (600 MHz, DMSO‐ d 6 ) δ (ppm): 9.51 (4H, s), 8.92 (2H, s), 7.50 (4H, t, J = 7.9), 7.36–7.29 (4H, m), 7.19–7.12 (2H, m); 13 C‐NMR (150 MHz, DMSO‐ d 6 ) δ (ppm): 181.2, 159.2, 156.6, 139.0, 128.1, 125.1; MS (EI) m/z 360.08 (M + ); Anal. Calcd.…”