| A new water-soluble, ion-type platinum(IV) complex, [Pt(NH3)4(OH)2]CO3.2H2O, was synthesized and characterized by the element analysis and single crystal X-ray diffraction. Its thermal decomposition characteristics were characterized by TG-TDA. Its cystal belongs to monoclinic space group P21/c, and its unit cell parameters are: a=0.88191(14) nm, b=1.17817(18) nm, c=1.01533(16) nm and V=0.9978(3) nm3; Z=4, R1=0.0403, wR2=0.1235, R1=0.0466, wR2=0.1353. The crystal data shows that Pt(IV) acted as the center ion coordinates with four NH3 in a square planar and two hydroxyl groups in opposite axial position, forming a octahedral bivalent cation. TG-TDA results showed that the peak decomposition temperature was 223.8℃. The prepared diesel oxidation catalysts using the compound have better catalytic activity and light-off temperature than conventional precursors. |
