A1 Journal article (refereed)
Synthesis of a Tetradentate Piperazine Ligand and a Structural Study of its Coordination Complexes (1999)


Rissanen, K., Ratilainen, J., Fröhlich, R., Airola, K., & Nieger, M. (1999). Synthesis of a Tetradentate Piperazine Ligand and a Structural Study of its Coordination Complexes. Polyhedron, 18(17), 2265-2273. https://doi.org/10.1016/S0277-5387(99)00117-5


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Publication details

All authors or editors: Rissanen, Kari; Ratilainen, Jari; Fröhlich, Roland; Airola, Karri; Nieger, Martin

Journal or series: Polyhedron

ISSN: 0277-5387

eISSN: 1873-3719

Publication year: 1999

Volume: 18

Issue number: 17

Pages range: 2265-2273

Publisher: Elsevier

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/S0277-5387(99)00117-5

Publication open access: Not open

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Abstract

A tetradentate ligand N,N′-bis(2-pyridylmethyl)piperazine (L1) and seven structures of its transition metal coordination compounds are described. Most of the compounds are of the general formula [M(L1)(NO3)2], with M=Cu2+, Co2+, Mn2+and Cd2+. In addition, a dimeric copper(II) compound, [Cu2(L1)(Ac)4](H2O)3, and polymeric silver(I) compounds, [Ag(L1)]n(NO3)n(EtOH)n and [Ag(L1)]n(SO3CF3)n, were formed. The overall structure of L1 in the metal complexes A–G varies with the size and electronic properties of the metal ions. Mononuclear complex A is a five-coordinated, B is a six-coordinated, and C and D are eight-coordinated metal complexes. The dinuclear Cu complex, E, is four-coordinated, as are the polymeric Ag complexes, F and G. The polymeric Ag complexes contain meso-helical subunits and the anions are clathrated between the metal–ligand strands.


Free keywords: X-ray structure


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