Synthesis and properties of nickel(II) and copper(II) complexes of a di-N-acetamide tetraaza macrocycle |
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| Affiliation: | 1. Department of Cultural Heritage Conservation Science, Kongju National University, Kongju 314-701, South Korea;2. Department of Chemistry and Chemical Education, Kongju National University, Kongju 314-701, South Korea;3. Department of Physics, Kongju National University, Kongju 314-701, South Korea;4. Department of Geoenvironmental Science, Kongju National University, Kongju 314-701, South Korea;5. Department of Physics, Chungnam National University, Taejon 305-764, South Korea;1. INSERM U1148, Laboratory for Vascular Translational Science (LVTS), Institut Galilée, Université Paris 13, Sorbonne Paris Cité, 99 Avenue Jean-Baptiste Clément, Villetaneuse, F-93430, France;2. Inserm U1148, Laboratory for Vascular Translational Science, UFR SMBH, Université Paris 13, Sorbonne Paris Cité, Groupe Biothérapies et Glycoconjugués, Bobigny, F-93430, France;1. Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, PR China;2. China Academy of Engineering Physics (CAEP), Mianyang 621900, PR China;1. Faculty of Chemistry and Chemical Technology, Department of Chemistry, Moldova State University, 60 Mateevici Street, MD 2009 Chisinau, Republic of Moldova;2. Institute of Applied Physics, Academy of Sciences, 5 Academiei Street, MD 2028 Chisinau, Republic of Moldova;1. Division of Polymer Engineering, School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia;2. Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), P.O Box 77, D/A Pejabat Pos Besar, Kangar, Perlis, 01000, Malaysia;1. Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria;2. Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands;3. School of Chemistry, University of St Andrews, Fife KY16 9ST, United Kingdom;4. Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, Skikda 21000, Algeria;5. Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia;6. Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia |
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| Abstract: | 
The syntheses of the hexadentate ligand 2,13-bis(acetamido)-5,16-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane (L2) and its complexes with Ni(II) and Cu(II) are described. Crystal structures of H2L2·2HClO4 (1), [Ni(L2)](ClO4)2 (2) and [Cu(L2)](ClO4)2 (3) are reported. The two pendant acetamide groups of the macrocyclic ligand 1 are trans to each other and the absolute configuration is a trans-IV in the solid state. The crystal structures of 2 and 3 revealed an axially elongated octahedral geometry with four nitrogen atoms of the macrocycle and two oxygen atoms of the pendant acetamide groups at the axial positions. The nickel(II) and copper(II) ions are located at an inversion center. The electronic spectra and electrochemical behaviors of the complexes are significantly affected by the presence of the pendant arms. |
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