Diphosphabenzenes. VI. New 1#lambda#~5, 3#lambda#~5-[1,3]Diphosphinines with Thio and Seleno Phosphonic Acid Groups - Preparation, Crystal Structure, NMR Data, and Coordination to Pd~(II)

摘要

Preparation of N,N,N',N'-tetraethyl-P-phenylethinyl phosphonothioacid diamide (2) and the corresponding phosphonoselenoacid diamide (3) are described. 2 and 3 react with 1,1,3,3,-tetrakis(dimethylamino)-1#lambda#~5,3#lambda#~5-diphosphete (1) to yield 1#lambda#~5,3#lambda#~5-[1,3]diphosphinine derivatives 4 and 5. With (bzl)_2Cl_2Pd 5 forms the coordination compound 6. All new compounds 2-6 are characterized by their nmr and ir spectra, the structures of 4-6 are further elucidated by X-ray structural analyses.