Metallo-ligand [CuII(carboxylato)4]2+ cores:: Tetrakis(trimethylammonio-acetato-O)copper diperchlorate and its 1/1 complex with sodium perchlorate

The crystal structure of tetrakis(trimethylammonioacetato-O)copper diperchlorate, [Cu(C5H11NO2)(4)](ClO4)(2), consists of discrete [Cu{(CH3)(3)NCH2CO2}(4)](2+) cations and ClO4- anions. The Cu atom is coordinated by four trimethylammonioacetate ligands in a square-planar geometry. The compound forms a 1/1 complex with sodium perchlorate, i.e. perchlorato-2 kappa O-bis(mu-trimethylammonioacetato)-1 :2 kappa(4)O-bis(trimethylammonioacetato)-1 kappa(2)O-coppersodium diperchlorate, [Cu(C5H11NO2)(4){Na(ClO4)}](ClO4)(2), in which the Cu and Na atoms are bridged by either three mu(2)-carboxylato-O,O' or two mu(2)-carboxylato-O groups to give rise to a linear cationic chain.