A new type of labile palladiazo-pd(II) sandwich(?) compound formed in non-complexing aqueous media.
The formation of a labile, presumably "sandwich" type, complex of palladium(II) and palladiazo has been disclosed by differential spectrophotometry. The complex, which is formed within 10 min of mixing of the pertinent solutions, decomposes progressively over a period of 1-2 days to yield an ML complex. The ML(2) complex exhibits an "anomalous" absorption spectrum with two absorption bands with maxima located at 525 (secondary) and 660 (principal) nm, the latter giving a molar absorptivity of 7 x 10(4) l.mole(-1).cm(-1). Possible structures are suggested for the ML(2) and ML complexes.
Pérez-Bustamante
J A
JA
Departamento de Química Analítica, Facultad de Ciencias y C.S.I.C., Universidad Complutense, Ciudad Universitaria, Madrid-3, Spain.