Chemistry Letters, Vol.40, No.12, 1335-1337, 2011
ON-OFF Switching of the Solvatochromic Behavior of a Copper(II)-Hydrazone Complex Induced by Protonation/Deprotonation
A new copper(II)-hydrazone complex, [Cu(paph)Cl(CH(3)-OH)] (Hpaph: 2-pyridinecarboxaldehyde 2-pyridylhydrazone) (1) has been synthesized and characterized by single-crystal X-ray diffraction and UV-vis spectroscopy. This complex shows distinctive color changes by the protonation/deprotonation and exhibits interesting ON OFF switching of solvatochromic behavior on the basis of the protonation/deprotonation of the hydrazone moiety.