摘要:
                                The macrocyclisation reaction of 3,3'-(3,6-dioxaoctane-1,8-diyldioxy)-bis(2-hydroxybenzaldehyde) (1) with S-methylisothiosemicarbazide hydroiodide (H2NNC(SCH3)NH2.HI) in the presence of potassium triflate, followed by addition of ;M(CH3COO)(2).nH(2)O, where M = Ni, Cu, Zn, afforded [NiLKI3] (2), [NiLK(CF3SO3)] (3), [CuLK(CF3SO3)(CH3OH)j (4) and [(ZnILK)(2)CH3OH] (5), respectively, Compounds 2-5 have been characterised by X-ray crystallography. IR, electronic, mass, H-1, C-13{H-1} and F-19(1H} NMR spectra are reported. Magnetic susceptibility measurements and ESR spectra of 4 indicate weak intermolecular spin-spin interactions, which are mostly dipolar in origin. (C) 2002 Elsevier Science B.V. All rights reserved.