[NPrn4]2[(ReS4)Cu5I6] and [NEt4]2[(ReS4)Cu3I4]: novel low dimensional solids

Abstract

The compounds [NPrⁿ₄]₂[(ReS₄)Cu₅I₆]1 and [NEt₄]₂[(ReS₄)Cu₃I₄]2, containing polymeric heterometallic chains and interesting structural features according to X-ray structure analyses, have been obtained by reaction of CuI with [NPrⁿ₄][ReS(S₄)₂] in dichloromethane 1 or [NEt₄][ReS₄]2 in acetone; complexes 1 and 2 are examples of a series of compounds which prove the possibility of a stepwise ‘capping’ of the edges of an ReS₄ tetrahedron by a Cu(hal/pseudohal)_x fragment (x= 1,2).