Thiolato-bridged copper complexes with N,N,S-tridentate ligands

Thiolato-bridged complexes [CuII2(apaet)Cl3] and [CuI3CuII3(apampt)3Cl6] (Hapaet = 2-[(3-aminopropyl)amino]ethanethiol, Hapampt = 1-[(3-aminopropyl)amino]-2-methylpropane-2-thiol), have been synthesized and characterized by infrared and electronic absorption spectra and temperature dependence of magnetic susceptibilities. X-ray crystallography of the latter complex reveals a localized mixed-valence structure which is supported by the spectroscopic and electrochemical data. Magnetic susceptibility data show that a strong antiferromagnetic interaction is operating between CuII ions in both the complexes.