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Displacement of CO from Ni(CO)4 by Diphosphine Disulfide Derivatives via a Photochemical Reaction

Aqra F., Jamhour R.

Polish Journal of Chemistry

2006

Vol. 80, nr 6

983-987

A series of compounds with formulas [Ni(CO)2R4P2S2] and [Ni2(Co)6-mi-R4P2S2] (R = Me, Et, Prn, Bun and Ph) have been prepared photochemically by the reaction of Ni(CO)4 with R2PSPSR2 using a 400 Wmedium pressure mercury lamp through a quartz-walled immersion well reactor. They were characterized by elemental analyses, IR and 31PNMR spectroscopy. The results reveal, that the disphosphine disulfide ligands show disubstitution and, thus, act as a bidentate species or monosubstitution and so act as a bridging ligand.