Spirocyclic Phosphazene Complexes of Arsenic(III): Synthesis and Characterization

Abstract

A new acyclic phosphazene ligand, [HN(PPh 2 NPh) 2 ] ( A ) has been synthesized and characterized. Spirocyclic phosphazene-glycolate complexes of arsenic(III) with ligand ( A ) and [HN(PPh 2 NSiMe 3 ) 2 ] ( B ), having the general formula [N(PPh 2 NPh) 2 {\\kern5pt}{\\gel}{\\kern-24pt}AsOGO ] and [N(PPh 2 NSiMe 3 ) 2 {\\kern5pt}{\\agel}{\\kern-30pt}AsOGO ] (where G = --CH 2 CH 2 m , --CHMeCH 2 m , --CHMeCH 2 CMe 2 m , --CH 2 CH 2 CH 2 m , or --CMe 2 CMe 2 m ) also have been synthesized by their reaction with chloro dioxarsolanes and -arsenanes in anhydrous medium. These moisture sensitive complexes are characterized by elemental analysis, IR, NMR ( 1 H, 13 C, and 31 P), and mass spectral data which have been discussed in relation to plausible structure for these arsenic(III) derivatives.