Bicyclic and tricyclic bis(amido)cyclodiphosph(III)azane compounds of maingroup elements

The coordination chemistry of bis(amido)cyclodiphosph(III)azanes as dinegat ive chelating N-donor ligands for main-group elements is reviewed. The subj ect is introduced by way of an overview of convenient syntheses for bis(ami no)cyclodiphosph(III)azanes and a discussion of their structures, followed by classifications of the ligands and their compounds by structure type. De tailed descriptions of syntheses and structures of bicyclic and tricyclic m ain-group bis(amido)cyclodiphosph(III)azane compounds, organized by groups, constitute the main part of the discussion. A summary of structural trends and potential applications concludes the review. (C) 2000 Elsevier Science B.V. All rights reserved.