Polymorphic alternating HNN-cobalt(II) chains both behaving as single-chain magnets (HNN = 4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide).
摘要：
Metal-radical alternating chains [Co(hfac)2HNN]n crystallized in two morphs containing repeating all-cis (alpha) and cis,cis,trans (beta) configurations with respect to the O(HNN)-Co-O(HNN) geometry (HNN = 4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide). Both phases showed magnetization jumps with hysteresis at 2 K. The alpha phase has a relatively high activation energy of magnetization reorientation (193 K).
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关键词：
Oxides Cobalt Organometallic Compounds Imidazolines Crystallography, X-Ray Molecular Structure Magnetics Models, Molecular
DOI：
10.1021/ic052119k
被引量：
年份：
2006
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