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The characterization of phosphines has attracted much attention in recent years because they are extensively used in asymmetric and stereoselective synthesis. In contrast to this, the P-stereogenic phosphinic acid derivatives which contain selenium, have been much less studied although they can be considered as useful stoichiometric and catalytic auxiliaries. For example, the enantiomeric tert-butylphenylphosphinoselenoic acids could be used as chiral solvating agents for the NMR determination of the enantiomeric excesses of a few optically active organic compounds with stereogenic carbon or heteroatoms. The progress on the X-ray structure determination of our synthesized selenophosphinic acids  1  is hereby presented. This should provide the three-dimensional architecture and verify proposed models of intramolecular interactions in supramolecular complexes with heteroorganic ligands. The acquired knowledge about supramolecular complex architecture and mechanism of action, will also be advantageous to synthetic chemists, to broaden the applicability of supramolecular compounds in stereocontrolled synthesis, for purpose to eliminate an expensive, time-consuming and non-stereoselective multi-step reaction protocols from use.

phosphorus, sulfur, and silicon and the related elements

The progress in crystal structure determination of organometallic complexes and their organic synthons containing selenium and stereogenic phosphorus as heteroatoms