Brina Dojer, A. Golobič, Z. Jagličić
2011
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0
Influential Citations
12
Citations
Journal
Monatshefte für Chemie - Chemical Monthly
Abstract
The synthesis and characterization of two new nickel(II) coordination compounds with 3- and 4-aminopyridine are reported. They were obtained after dissolving Ni(CH3COO)2·4H2O in different solutions of 3- and 4-aminopyridine. The products were characterized magnetically, structurally by single-crystal X-ray diffraction analysis, and spectrally by FT-IR spectroscopy. Dark green crystals of the polymeric coordination complex {[Ni(O2CCH3)2(3-apy)2]·H2O}n were synthesized by the reaction of Ni(CH3COO)2·4H2O and 3-aminopyridine (3-apy). The molecular structure of this complex consists of a zigzag chain in which nickel(II) ions are connected by bridging 3-aminopyridine ligands. The Ni(II) ion is six-coordinated by three oxygen atoms from two acetate ligands, one chelating and one monodenate, and by three nitrogen atoms from three 3-aminopyridine ligands, one terminal and two bridging ones. The blue crystals obtained by the reaction of Ni(CH3COO)2·4H2O with 4-aminopyridine (4-apy) consist of the monomeric complex [Ni(O2CCH3)2(4-apy)2(H2O)2], in which the ligands possess trans geometry around the Ni(II) ion. The interactions including intra- and intermolecular hydrogen bonds in the crystal structures of both complexes are discussed. Magnetic properties of both compounds were studied between 2 and 300 K giving the result of μeff = 3.1 BM in the paramagnetic region.Graphical abstract