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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 8
BKCSDE 23(8)
August 20, 2002 

Preparation and Characterization of Nickel(II) and Copper(II) Tetraaza Macrocyclic Complexes with Isonicotinate Ligands
Ki-Young Choi, Moon-Jip Kim, Dae-Sue Kim, Yong-Son Kim, Jae-Hyun Kim, Haiil Ryu, Youn-Mook Lim, Seung-Gu Kang, Kuy-Chul Lee, Choon-Pyo Hong
Crystal structures, Macrocycle, Isonicotinate, Nickel(II) and copper(II) complexes
The complexes [Ni(L)(INT)2]·5H2O (1) and [Cu(L)(H2O)](Cl)(INT)·3H2O (2) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18 ,07.12 ]docosane, INT = isonicotinate) have been prepared and characterized by X-ray crystallography, electronic absorption, and cyclic voltammetry. The crystal structure of 1 reveals an axially elongated octahedral geometry with two axial isonicotinate ligands. The electronic spectra, magnetic moment, and redox potentials of 1 also show a high-spin octahedral geometry. However, 2 shows that the coordination environment around the copper atom is a distorted square-pyramid with an axial water molecule. The spectra and electrochemical behaviors of 2 are also discussed.
1062 - 1066
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