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稀土离子由于其4f 电子不能完全屏蔽所增加的核电荷而产生镧系收缩效应。这使包括钇在内的重稀土元素化学性质相似难以分离。从轻稀土到重稀土，吸引阴离子能力变强，即离子势递增，碱度变弱。表现在一些配体与稀土离子配位能力递增等性质上。
基于配位平衡效应的重稀土分离新体系的研究与应用
【摘 要】
：
稀土离子由于其4f 电子不能完全屏蔽所增加的核电荷而产生镧系收缩效应。这使包括钇在内的重稀土元素化学性质相似难以分离。从轻稀土到重稀土，吸引阴离子能力变强，即离子势递增，碱度变弱。表现在一些配体与稀土离子配位能力递增等性质上。
【机 构】
：
中国科学院长春应用化学研究所稀土资源与利用国家重点实验室,吉林长春,130022 中国科学院长春应
【出 处】
：
第九届全国无机化学学术会议
【发表日期】
：
2015年7期
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