Copper(II) adducts with N, N,N', N'-tetramethylethane-1,2-diamine and attempts to prepare trinuclear derivatives

摘要

We have attempted to prepare complexes of the type [M_3Cl_5(tme)_3][BPh_4] (tmen = Me_2N(CH_2)_2NMe_2) with M = Cu. Such species are already known for M = Ti, V, Fe, Ni, and Co, but we have been unable to prepare any Cu analogues. Teh [BPh_4]~- appears to reduce Cu~II to Cu~I and we isolated the known [Cu(tmen)_2][CuCl_2] from reaction mixtures that contained it. Attempts to obviate this reduction by using a different anion were anion were successful, but no triangulo species were isolated. However, during this work we isolated and structurally characterised [{CuF(BF_4)(rtmen)}_2] and [{Cu(OH)((BF_4)(tmen)}_2].