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Abstract
Reactions in CH3CN:CH2Cl2 (2:1) under Ar of the dimethyl-quaterpyridine ligand C22H18N4 (L) with Mn(ClO4)2, Fe(BF4)2, CoCl2, Co(NO3)2, Zn(NO3)2, Cd(CH3COO)2 and HgCl2 give complexes of the type [ML(H2O) m X n ]2[MX p ], where X denotes the initial counterions, with m = 1, n = 1, p = 4 or m = 2, n = 0, p = 6. The complexes have been characterised by spectroscopic techniques and elemental analysis. The solid-state structures of two forms of the CoCl2 complex have been established by X-ray crystallography, enabling an analysis of the interactions occurring in crystals of this type.
Acknowledgements
We would like to express our deep gratitude to Prof. Jean-Marie Lehn for the opportunity to carry out a part of these studies in his laboratory and for his precious advice. This work was partially supported by Grant No. NN 204 2716 33 from the Polish Ministry of Higher Education and Science.