Optically active amidophosphite with the peripheral imino group (R)(Et2N)2POCH(2)CH(Et)N=CHPh is synthesized through one-stage phosphorylation of the corresponding imino alcohol. Its reaction with [Rh(CO)(2)Cl](2) (at P: Rh = 1) yields the mononuclear chelate [Rh(CO)(P<^>N)Cl]. Structures of the compounds are determined by IR, P-31, and C-13 NMR spectroscopy, mass spectrometry, and polarimetry.