Tris- and tetra-perhalogenoaryl metallates of cobalt(II), nickel(II), palladium(II), and platinum(II)
Abstract
The reaction of [Bun4N]2[MCl4](M = Co or Ni) with LiC6F5 or LiC6Cl5, and of MCl2(tht)2(M = Pd or Pt, tht = tetrahydrothiophen) with LiC6F5 gives [Bun4N]2[M(C6F5)4](M = Co, Ni, or Pd), [Bun4N2]2[M(C6Cl5)4](M = Co or Ni), and [Bun4N]2[M(C6F5)3(tht)](M = Pd or Pt) which, except for the cobalt derivatives, are stable towards heat, daylight, and atmospheric moisture.