Abstract
A new complex of the bis(O,O′-di(2-phenylethyl)dithiophosphato) ligand, namely, Ni[S2P(OCH2CH2Ph)2]2 was synthesized and characterized by spectroscopic methods, magnetic measurements, elemental analysis and single-crystal X-ray diffraction. In the crystal, the (PhCH2CH2O)2PSS− serves as a bidentate ligand, coordinating to the nickel atom with its two sulphur atoms. The nickel atom lies on a centre of symmetry and forms two independent Ni–S bonds [2.2228(13) and 2.2202 (11)A] in a four-coordinate plane. The hydrolysis of p-nitrophenyl picolinate (PNPP) promoted by the complex was investigated by UV–vis spectrophotometry. The results show that this complex is a very efficient catalyst for promoting the hydrolysis of PNPP. A mechanism for the hydrolysis is proposed.
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