Crystal structures and spectroscopic behaviour of polymeric copper(II) chloroacetate adducts with 3- and 4-pyridylmethanol

The structural and spectroscopic properties for polymeric complexes, Cu(Cl2CHCOO)2(3-PM)2, Cu(Cl3CCOO)2(3-PM)2, Cu(ClCH2COO)2(4-PM)2 and Cu(Cl2CHCOO)2(4-PM)2 (PM=pyridylmethanol), are reported. The characterization is based on elemental analysis, infrared, electronic and EPR spectra. The Cu(Cl2CHCOO)2(3-PM)2 as well as Cu(Cl3CCOO)2(3-PM)2 adopt polymeric structures as revealed by X-ray structure analysis. The polymeric structure of Cu(Cl2CHCOO)2(3-PM)2 is centrosymmetric and centred at the inversion center of the space group P1bar (Z=2), while the structure of Cu(Cl3CCOO)2(3-PM)2 contains two crystallographically independent centrosymmetrical molecules, which are centred at the inversion centres of the space group P21/c (Z=4).