Planar Ni(II) 1,2-dithiolenes involving bidentate P-donor ligands

Add time:09/02/2019    Source:sciencedirect.com

A series of planar Ni(II) dithiolenes derived of maleonitriledithiol (mnt), benzene-1,2-dithiol (bdt) and toluene-3,4-dithiol (tdt) with bidentate P,P-ligands (dppe = 1,2-bis(diphenylphosphino)ethane, dppp = 1,3-bis(diphenylphosphino)propane, dppb = 1,4-bis(diphenylphosphino)butane, dpppn = 1,5-bis(diphenylphosphino)pentane) of the [Ni(P,P)(dithiol)] type have been synthesized. The compounds have been characterized by elemental analysis, IR and electronic spectroscopies, magnetochemical, conductivity measurements and thermal analysis. Single crystal X-ray analysis of [Ni(dpppn)(mnt)] confirmed a planar geometry of NiP2S2 chromophore. Possible practical applications such as use of these compounds for vulcanization accelerators and their anticholinesterase activity were evaluated.

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