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由于“镧系收缩”的影响,轻稀土比重稀土离子具有较大的离子半径和更高的配位不饱和性,所以轻稀土化合物稳定性低,容易发生歧化反应。采用大体积配位基或螯合配合基都
Due to the influence of “lanthanide shrinkage”, the light rare earths have larger ionic radius and higher coordination unsatisfaction, so the light rare earth compounds have low stability and are prone to disproportionation reaction. Large volume ligands or chelating ligands are used