Chemistry of Iron Complexes. Part 1. Synthesis, Characterization, and Structures of Iron(3+) Complexes with Bis(tertiary phosphine oxides)

Article abstract of DOI:10.1039/DT9830002039

Bidentate bis(tertiary phosphine oxides) (L-L) such as PP'-methylene- (mdpo), PP'-ethylene- (edpo), PP'-tetramethylene- (tmdpo), and PP'-hexamethylene-bis(diphenylphosphine oxides) (hmdpo) on reaction with iron(3+) chloride or nitrate in suitable organic solvents yield complexes of the types: *xH2O (x = 0 for all except hmdpo), (L-L = tmdpo or hmdpo), *H2O (L-L = edpo), and 2*2H2O (L-L = mdpo).These complexes have been characterized by elemental analyses, i.r., far-i.r., u.v.-visible, e.s.r., and Moessbauer spectral data, molar conductance, thermogravimetric analysis, magnetic moments, and X-ray diffraction data.The cation (1+) has been assigned a trans-octahedral structure.The nitrate complex of mdpo has a dimeric trigonal bipyramidal cation while the complex of edpo has a cis-octahedral structure.The nitrate complexes of tmdpo and hmdpo also have trigonal bipyramidal structure.

Full text of DOI:10.1039/DT9830002039

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