Crystal Structure and Properties of [Co(NH3)6][PdCl4]Cl

Abstract

Complexes [Co(NH₃)₆][PdCl₄]Cl (I) and [Co(NH₃)₆]₂[PtCl₄]₃ (II) are synthesized and characterized. Complex I is isolated for the first time. The compositions and structures of the complexes are confirmed by X-ray structure analysis (CIF file CCDC no. 1830657), X-ray diffraction analysis, IR spectroscopy, and elemental analysis. The thermal decomposition of complex I in air gives the three-phase product: Pd (space group Fm3m), PdO (space group P\(\bar {4}\)n2), and Co₃О₄ (space group Fd3m). The two-phase product consisting of metallic platinum Pt (space group Fm3m) and cobalt oxide Co₃О₄ (Fd3m) is formed as a result of the thermal decomposition of complex II is revealed that the single-phase product (a solid solution based on the noble metal and cobalt) can be obtained by the thermal decomposition of the corresponding binary complexes in a hydrogen flow or by chemical reduction using a solution of N₂H₄ · HCl.