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Synthesis, crystal structure, hydrogen bonding and spectroscopy of Co, Mn and Ni oxalate complexes with the ligand (N,N′-bis(2-pyridylmethyl)-1,3-propanediamine) |
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| Authors: | Aminou Mohamadou Ilpo Mutikainen Jan Reedijk |
| Institution: | a Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands b Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 6229, Groupe de Chimie de Coordination, Moulin de la Housse, BP 1039 - 51687 Reims cedex 2, France c Laboratory of Inorganic Chemistry, Department of Chemistry, P.O. Box 55 (A.I.Virtasen aukio 1), 00014 University of Helsinki, Finland |
| Abstract: | Three new compounds are reported with the tetradentate ligand (N,N′-bis(2-Pyridylmethyl)-1,3-propanediamine) (abbreviated as pypn), two mononuclear compounds i.e. Co(pypn)(C2O4)](ClO4) (1), Mn(pypn)(C2O4)](ClO4) (2) and one dinuclear compound Ni2(pypn)2(C2O4)](ClO4)2(C2H6O)1/4(H2O) (3). In the Co(III) and Mn(II) complexes the oxalate behaves as bidentate ligand, chelating the metal in the O,O′ mode, whereas in the Ni(II) compound the oxalate behaves as tetradentate ligand binding each Ni(II) ion by two oxygen atoms and bridging the two metallic centers.The synthesis, X-ray crystal structure of all three compounds and their spectroscopic properties are presented in detail. The geometry around the Co3+, Mn3+, Ni2+ ions is essentially octahedrally based, while the stabilization of the crystal lattice in all cases is maintained by interesting hydrogen bond systems. |
| Keywords: | Transition metal Hydrogen bond Oxalate |
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