SYNTHESIS AND CRYSTAL STRUCTURE OF THE Ni(II) COMPLEX WITH (4Z)-4-[(2-DIETHYLAMINOETHYLAMINO)METHYLENE]- 5-METHYL-2-PHENYLPYRAZOLE-3-ONE

The Ni(II) complex based on (4 Z )-4-[(2-diethylaminoethylamino)methylene]-5-methyl-2-phenylpyrazole-3-one ( HL ), being the condensation product of 5-hydroxy-3-methyl-1-phenylpyrazole-4-carbaldehyde with N,N-diethylethylenediamine, is synthesized. By the elemental analysis and IR spectroscopy it is found that the nickel complex has the composition Ni(L)CH 3 COO·CH 3 OH·H 2 O. The crystal and molecular structures of the complex are determined by single crystal Xray diffraction (XRD). From the XRD data it follows that the monochelate Ni(II) complex has a distorted octahedral structure due to bonds with a monodentate acetate anion and methanol and water molecules.