in acetic acid Pd(II) nitrate dissolved in anhyd. acetic acid; stirred for 3 h at room temp.; suspn. diluted with acetic acid; centrifuged; washed (H2O, acetone); dried (vac., NaOH); elem. anal.;

in water; acetic acid Pd(II) nitrate dissolved in mixt. of acetic acid and H2O; mixt. stirred for 3 h at room temp.; filtered; washed (glacial acetic acid, ether); dried (vac. over alkali);mixt. extd. (benzene); filtered; filtrate evapd. to dryness at 40.degre e.C in vac.; elem. anal.;

HCl in nitric acid aq. HNO3; Pd powder dissolved at 90-95°C within 1 h in HNO3 (d. 1.419 g/ml)with addn. of HCl (d. 1.165 g/ml), then soln. evapd. at the same temp., diluted with water; concd. in air to wet crystals, dried in desiccator for 1-2 d over KOH; elem. anal.;