acetic acid T=120 - 130°C; 0.5 h;

1: H2SO4 2: 53 percent / ethanol / Heating View Scheme

1: NH2OH*HCl; Na2SO4 2: H2SO4 3: 53 percent / ethanol / Heating View Scheme

1: 73.4 percent / dioxane / 6 h 2: 1.) heated with alkali; 2.) acidified View Scheme

in N,N-dimethyl acetamide other solvent; Product distribution;

1.) heated with alkali; 2.) acidified;

air in ethanol suspn. of HS2PPh2 in EtOH added to suspn. of Sn compd. in EtOH; stirredfor 15 min; suspn. of semicarbazone ligand (molar ratio 1:1:1) in EtOH added; stirred for 7 d; filtered; soln. stored at 0°C; filtered; solid vac. dried (dithiophosphinato complex); remaining mother liquor concd. in air (monothiophosphinato complex); elem. anal.;