The reaction of copper chloride dihydrate and ferric chloride hexahydrate with a tripodal N-4 ligand (ntb) under mild conditions affords two novel complexes [Cu(ntb)Cl](2)[CuCl4] (.) 2H(2)O (1) and [Fe(ntb)Cl-2]Cl (.) 3H(2)O (2). The reaction of ferric chloride with another N-4 ligand, bispicpn, forms an octahedral mononuclear complex, [Fe(bispicpn)Cl-2]Cl (3). Single-crystal X-ray structural Studies of 1, 2 and 3 reveal the formation of hydrogen-bond sustained 3D, 2D and 1D networks, respectively, involving (N-(HO)-O-...) and (N-(HCl)-Cl-...) interactions. The packing arrangement in 2 further reveals the existence of hexagonal channels with helical propagation along the diagonal of the crystallographic b- and c-axes. The reactions of these complexes with 3,5-di-tert-butyl-catechol have been studied in dimethylformamide. NMR techniques have been used to identify the reaction products.
Synthesis and X-ray crystallographic characterization of copper and iron complexes with tetradentate-N-4 ligands: Reactivity towards catechol oxidation / A. Panja, S. Goswami, N. Shaikh, P. Roy, M. Manassero, R.J. Butcher, P. Banerjee. - In: POLYHEDRON. - ISSN 0277-5387. - 24:18(2005 Dec 08), pp. 2921-2932.
Synthesis and X-ray crystallographic characterization of copper and iron complexes with tetradentate-N-4 ligands: Reactivity towards catechol oxidation
M. Manassero;
2005
Abstract
The reaction of copper chloride dihydrate and ferric chloride hexahydrate with a tripodal N-4 ligand (ntb) under mild conditions affords two novel complexes [Cu(ntb)Cl](2)[CuCl4] (.) 2H(2)O (1) and [Fe(ntb)Cl-2]Cl (.) 3H(2)O (2). The reaction of ferric chloride with another N-4 ligand, bispicpn, forms an octahedral mononuclear complex, [Fe(bispicpn)Cl-2]Cl (3). Single-crystal X-ray structural Studies of 1, 2 and 3 reveal the formation of hydrogen-bond sustained 3D, 2D and 1D networks, respectively, involving (N-(HO)-O-...) and (N-(HCl)-Cl-...) interactions. The packing arrangement in 2 further reveals the existence of hexagonal channels with helical propagation along the diagonal of the crystallographic b- and c-axes. The reactions of these complexes with 3,5-di-tert-butyl-catechol have been studied in dimethylformamide. NMR techniques have been used to identify the reaction products.Pubblicazioni consigliate
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