Reaction of rhodium trichloride with P-functionalized calix[4]resorcinols in various media

The features of the reaction of rhodium trichloride with calix[4]resorcinols modified with various types of phosphorus-containing groups in ethanol, ethanol-formate medium and acetone under an inert atmosphere were studied. Neutral complexes were isolated in the solid form, the solvent molecules were shown to be actively involved into the formation of the final reaction products. The compounds were characterized by IR, Raman, P-31 NMR, ESR, X-ray photoelectron and electronic spectroscopy, and electric conductivity. The composition was confirmed by the data of elemental analysis, X-ray fluorescence analysis, and derivatography. Based on the analysis of the ESR spectrum, the electronic and geometric structures of the paramagnetic product isolated from the acetone medium was determined.