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ESR Spectra of halo[1, 1, 1-tris(deiphenylphosphinomethyl)ethane] nickel(I) complexes

✍ Scribed by A. Bencini; C. Benelli; D. Gatteschi; L. Sacconi

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
469 KB
Volume
37
Category
Article
ISSN
0020-1693

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✦ Synopsis

The single crystal ESR spectra of halo[I,I,l-tris-(diphenylphosphinomethyl)ethane] nickel(I), NipJ (X = Cl, Br, I) are reported. Due to short spin lattice relaxation the spectra were recorded at 4.2 K. Completely anisotropic g values were obtained for the chloride and the bromide doped into the corresponding copper(I) complex, and for the magnetically undiluted iodide. The hyperjine splitting due to two equivalent phosphorus atoms was resolved. Single crystal polarized electronic spectra of NipJ were recorded in order to gather information on the energies of the electronic levels. Attempts were made to calculate the g values through a ligand field model. An orbitally degenerate ground level is anticipated, which might be responsible for the unusual features of the spectra.

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## Abstract Reactions of copper(I) halides with 1,1,1‐tris(diphenylphosphanylmethyl)ethane (triphos) in 1:1 molar ratio afforded mononuclear complexes of the type [CuX(triphos)] which on further treatment with one equivalent of the potassium thiolate salt of a heterocyclic thione gave rise to the f