Abstract
Abstract A new macrocyclic ligand, 7-oxa-2, 12-dithia (13) (2, 6)-pyridinophane (1, SNSO) was synthesized and characterized by its elemental analytical data, nmr, ir, and mass spectra. Its cobalt(II), nickel(II), and copper(II) halide complexes (MLX2, where X = Br and Cl) were investigated. Probable structures of these complexes are proposed on the basis of electrical conductivity measurements, magnetic susceptibility data, electronic and infrared spectra. The nickel(II) bromide complex is five coordinate and the other complexes are six-coordinate. The electronic spectral bands due to selected d-d transitions are tentatively assigned.
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