Moessbauer and preparative studies of some iron(II) complexes of diphosphines

DOI: 10.1039/DT9880002865

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2865 - 2870 (1988)

Update date:2022-08-05

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Authors:

Barclay, J. Elaine

Leigh, G. Jeffery

Houlton, Andrew

Silver, Jack

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Article abstract of DOI:10.1039/DT9880002865

Analytical and Moessbauer spectral data show that Ph₂PCH₂CH₂PPh₂ (dppe) forms adducts [FeCl₂(dppe)] and [FeI₂(dppe)], and that [FeCl₂(dppe)₂] does not exist. The phosphine 1,2-C₆H₄(PPh₂)₂ (opdp) forms adducts FeX₂(opdp)₂, which exists in one form (high-spin, trans octahedral) for X = Cl, and in two isomeric forms for X = Br or I. One isomer for X = I is high-spin, trans octahedral, and the other is ionic low-spin, and five-co-ordinate. A comparison is made of these structures and of their Moessbauer spectra with those of derivatives of Me₂PCH₂CH₂PMe₂, Et₂PCH₂CH₂PEt₂, Prⁱ₂PCH₂CH₂Prⁱ ₂, and Ph₂PCH₂PPh₂.

Full text of DOI:10.1039/DT9880002865

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