The compounds tetrakis(methyl isocyanide)platinum bis(hexafluorophosph
ate), [Pt(CNMe)(4)](PF6)(2), and tetrakis(methyl isocyanide)palladium
bis(hexafluorophosphate), [Pd(CNMe)(4)](PF6)(2), are isostructural; bo
th crystallize with a tetragonal unit cell with a simple ionic packing
arrangement related to that of NaCl.