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合成了组成为Ln(AcAc)_3·AA·H_2O(其中Ln=Ho、Er、Y、Yb,AcAc=乙酰丙酮基,AA=缬氨酸或蛋氨酸)的三元配合物。热分析表明配合物第一失重反应在100℃左右发生,分解历程是2分子配合物共同失去1个分子的HAcAc。红外光谱发现配合物含有配位水,AA处于内盐状态,N原子不参加配位。红外光谱同时证明AA是以羧基的1个氧原子成单齿配位。f-f超灵敏跃迁光谱证明Ln(AcAc)_3·Met·H_2O与Ln(AcAc)_3·Val·H_2O是具有相同结构的配合物。
Ternary complexes of the composition Ln (AcAc) _3.AA.H2O (where Ln = Ho, Er, Y, Yb, AcAc = acetylacetonate, AA = valine or methionine) were synthesized. Thermal analysis shows that the first weightless reaction of the complex occurs at about 100 ℃. The decomposition process is the simultaneous loss of one molecule of HAcAc by two molecular complexes. Infrared spectroscopy found that the complex contains coordination water, AA is in the internal salt state, N atoms do not participate in coordination. Infrared spectroscopy also shows that AA is a monodentate ligand with one oxygen atom of carboxyl group. The f-f hyper-sensitive transition spectra prove that Ln (AcAc) _3 · Met · H_2O and Ln (AcAc) _3 · Val · H_2O are complexes with the same structure.