The adductive reaction of Ni[S2P(OCH2CH2Ph)2]2 with pyridine was studied by spectrographic method and the equilibrium constants was found to be β1=(1.12±0.09)×102,β2=(2.40±0.41)×104,R1=0.997,R2=0.998.The adduct Ni[S2P(OCH2CH2Ph)2]2·2Py was characterized by elemental analysis,IR spectra,single-crystal X-ray diffraction method.The crystal structure belongs to monoclinic system,space group P 21/c with the following crystallographic parameters:a=9.240(3),b=16.124(8),c=14.148(7),α=90.00°,β=92.07(4)°,γ=90.00°.
