镧系元素相关的键价参数研究  

Study on the Bond Valance Parameters Related to Lanthanoid

作　　者：陈明旦[1] 胡盛志[1] 

机构地区：[1]厦门大学化学系,物理化学研究所,固体表面物理化学国家重点实验室,厦门361005

出　　处：《物理化学学报》2002年第12期1104-1109,共6页Acta Physico-Chimica Sinica

摘　　要：根据镧系元素络合物的晶体结构数据确定了单价键长R0的镧系收缩效应,并对已有的键价参数进行了系统的修订.建立了Ln-O键的R0对原子序数N在普适参数B=0.037nm下的线性方程R0(nm)=0.2879-0.00132N.用不同参数进行键价和的计算并对结果进行了对比和讨论,最后展望了相关研究的前景.Based on the crystal structure data of the lanthanide complexes, lanthanide contraction of the single valance bond length R0 for Ln-O bond is confirmed. The R0 values with B=0.037 nm were re determined systematically as described by the linear equation R0(nm)=0.2879-0.00132N, where N is the atomic number of lanthanide. Using the parameters suggested by Brown O′Keeffe and thepresent authors, the bond valance sums for Ln(III) in some organometallic compoumds were calculated and discussed in detail. Prospects for the further studies in the line of bond valence parameters were briefly presented.

关 键 词：镧系元素 键价参数 镧系收缩 键价和 晶体结构 络合物 

分 类 号：O641[理学—物理化学]