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Updated: Aug 14, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
[(Triphos)Ni(eta2-BH4)]: an unusual nickel(I) borohydride complex
Mathivathani Kandiah1, G Sean McGrady, Andreas Decken
1Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 6E2.
Abstract:
Reduction of [(triphos)NiCl2] (1) with an excess of NaBH4 in THF produces the paramagnetic Ni(I) complex [(triphos)Ni(eta2-BH4)] (2). X-ray crystallography shows 1 to be a square-planar Ni(II) species in which the phosphine ligand is bidentate, whereas 2 has pseudotetrahedral geometry at the Ni(I) center, with a tridentate phosphine and the borohydride ligand occupying a single coordination site. Density functional theory calculations show the unpaired electron in 2 to reside in an orbital located mainly on the Ni atom.
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