The volatile rare earth chelates of 1, 1, 1, 2, 2, 3, 3-heptafluoro-7, 7-dimethyl-4, 6-octanedione /
The volatile rare earth chelates of 1, 1, 1, 2, 2, 3, 3-heptafluoro-7, 7-dimethyl-4, 6-octanedione /
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1,1,1,2,2,3,3-七氟-7,7-二甲基-4,6-辛二酮挥发性稀土螯合物/
DOI：
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发表时间：
1967
期刊：
影响因子：
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通讯作者：
C. S. Springer
中科院分区：
文献类型：
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作者：
C. S. Springer
摘要：合成并研究了十四种三价稀土离子与双齿配体1，1，1，2，2，3，3-七氟-7，7-二甲基-4，6-辛二酮（fod）的内配合物。分离出的产物具有分子式M（fod）3·H2O，但在真空中在P4 O 10上或通过在无水气氛中加热而容易脱水。通过克莱森缩合合成β-二酮配体。还制备了Sc（III）、Cr（III）和Al（III）的fod络合物，发现它们都具有式M（fod）3。无水稀土配合物和Sc、Cr、Al化合物均为六配位。铬和铝的配合物是八面体的，但稀土和钪的配合物的结构是未知的。水合稀土配合物的配位数和结构也是未知的。无水稀土配合物是已知的最易挥发的稀土化合物，用气相色谱法和热重分析法对其进行了研究。这些化合物的挥发性与金属离子的离子半径成反比。（作者）
Abstract : Inner complexes of fourteen trivalent rare earth ions with the bidentate ligand 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionate, fod, were synthesized and studied. The products isolated have the formula, M(fod)3.H2O, but are easily dehydrated in vacuo over P4O10 or by heating in an anhydrous atmosphere. The beta-diketonate ligand was synthesized via a Claisen condensation. The fod complexes of Sc(III), Cr(III), and Al(III) were also prepared and all found to have the formula, M(fod)3. The anhydrous rare earth complexes and the Sc, Cr, and Al compounds are six-coordinate. The chromium and aluminum complexes are octahedral but the structures of the rare earth and scandium complexes are unknown. The coordination numbers and structures of the hydrated rare earth complexes are also unknown. The anhydrous rare earth complexes are the most volatile rare earth compounds known, and they were studied by gas chromatography and thermogravimetric analysis. The volatilities of these compounds vary in inverse proportion with the ionic radius of the metal ion. (Author)