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用定量体积排除色谱方法研究了过渡金属Fe(Ⅲ)、Co(Ⅲ)、Cu(Ⅱ)、Ni(Ⅱ)的乙酰丙酮螯合物在四氢呋喃溶液中的加合和缔合行为。在溶液中乙酰丙酮钴(Ⅲ)以单个螯合物分子的形式存在,乙酰丙酮铜(Ⅱ)和乙酰丙酮铁(Ⅲ)与溶剂加合生成加合物,乙酰丙酮铁(Ⅲ)除加合物外还存在缔合度为2-10的多分散缔合物,乙酰丙酮镍(Ⅱ)水合物在四氢呋喃中产生了加合交换作用,同时存在缔合度为6左右的缔合物。色谱数据给出了螯合物、加合物及缔合物
Addition and association behavior of acetylacetone chelates of transition metals Fe (Ⅲ), Co (Ⅲ), Cu (Ⅱ) and Ni (Ⅱ) in tetrahydrofuran solution were studied by quantitative volumn exclusion chromatography. In the solution, cobalt (Ⅲ) acetylacetonate exists in the form of single chelate molecule, copper (Ⅱ) acetylacetonate and iron (Ⅲ) acetylacetonate are added to form adduct with the solvent. Iron (Ⅲ) In addition, polydisperse associative compounds with the degree of association of 2-10 also exist. Addition exchange reaction of nickel (Ⅱ) acetylacetonate hydrate in tetrahydrofuran is also found. Chromatographic data give chelates, adducts and associates