Hassan Abdel-Salam, A., & A. Abo-El-Dahab, H. (2013). Synthesis and Properties of Tetranuclear Octahalo Copper(II) Complexes, Pip4Cu4X8 (Pip = Piperidine, X = Cl or Br) and the Dimer Pip4Cu2Cl4 in Aprotic Media. Asian Journal of Chemistry, 25(13), 7412–7416. https://doi.org/10.14233/ajchem.2013.14777