Halides Mossbauer spectra

Fig. 14. Experimental and theoretical Mossbauer spectra of ferric chloroperoxidase and its halide complexes, (a) Native chloroperoxidase, pH 3, T = 4.2 °K, Ho = 1.3 kOe, o J. y- An identical spectrum was found for the chlorine-complex measured under the same conditions, (b) Iodine complex, pH 3, T = 1.5 °K, Ho = 1,3 kOe, Hq f. (c) Fluoride complex, pH 3, T = 4.2°K, Ho = 1.3 kOe, [Taken...

The only ruthenium(V) halides reported are those containing fluoride. Green ruthenium(V) fluoride can be prepared by direct fluorination of the metal at 300°C, by reduction of [RuF ] with BiFj, SbFj, Ru or or by reaction of the metal and BrFj. The latter method first generates [BrFj] [RuF ] which decomposes at 120°C in vacuo to give tRuF5]4 and BrFj. The tetrameric structure (369) has been confirmed by X-ray analysis, but its mass spectrum indicates that the vapour consists of an equilibrium between monomer, dimer, trimer and tetramer units. Magnetic measurements reveal the presence of significant interactions between adjacent metal ions. Mossbauer and IR spectral measurements are also available. Some of the reactions of [RuFj]4 are discussed below but further details are to be found in reference 3, p. 79. 

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