Cd N N O dpktch H C

Di-2-pyridyl ketone thiophene-2-carboxylic acid hydrazone (dpktch) was prepared from the reaction between di-2-pyridyl ketone (dpk) with thiophene-2-carboxylic acid hydrazide in acidified ethanol under reflux [24]. 1H NMR (δ ppm) in dmso-d6: 7.28 (1H, m) 7.48 (2H, m), 7.61–7.78 (3H,m), 8.51–8.63 (5H), 8.92 (1H br, s).
Synthesis of [M(η2-O,O-OAc)(η3-N,N,O-dpktch-H)]·nH2O (n = 0, 1)