臺灣博碩士論文加值系統

本論文合成了有機自由基NIToPy (2-(2-pyridyl)-4,4,5,5-
tetramethyl-4,5-dihydro-1H-imidazolyl-oxy-3-oxide) 及NITmPy
(2-(3-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-
oxy-3-oxide) 並以之與不同金屬化合物反應合成金屬錯合物,共合成了
Cd3Cl6(NIToPy)2(ETOH)2, HgBr2(NIToPy), Co(NIToPy)3(ClO4)2,
CoCl2(NIToPy)2, Co(hfac)2(NIToPy), Ni(NIToPy)2(ClO4)2(H2O)7/2,
Cu(NIToPy)2(ClO4)2(H2O), CuCl2(NIToPy)2 及 HgBr2[HgBr2(NITmPy)]2
等金屬錯合物. 除了CuCl2(NIToPy)為鐵磁性偶合作用外,其餘均為反鐵
磁性偶合作用.與順磁性金屬鍵結的錯合物其偶合常數較與逆磁性金屬鍵
結的錯合物來的大.

Two nitronyl nitroxide ligands NIToPy (2-(2-pyridyl)-4,4,5,5-
tetramethyl-4,5-dihydro-1H-imidazolyl-oxy-3-oxide) and NITmPy
(2-(3-pyridyl)-4,4,5,5-tetramethyl- 4,5-dihydro-1H-imidazolyl-
oxy-3-oxide) and some new compoundsof formula Cd3Cl6(NIToPy)2(
ETOH)2, HgBr2(NIToPy), Co(NIToPy)3(ClO4)2, CoCl2(NIToPy)2, Co(
hfac)2(NIToPy), Ni(NIToPy)2(ClO4)2(H2O)7/2, Cu(NIToPy)2(ClO4)2(
H2O), CuCl2(NIToPy)2 and HgBr2[HgBr2(NITmPy)]2 are magnetically
characterized. The NIToPy radical acts as a bidentate ligand
toward metals through the nitrogen atom of the pyridine ring and
the oxygen atom of the N-O group.TheNITmPy molecule is bound
through the pyridine nitrogen to a HgBr2 moleculeand through the
oxygen of the N-O group to Hg atom of another HgBr2 molecule.All
compounds are antiferromagnets except CuCl2(NIToPy)2.