Coordination Modes of Americium in the Am<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>(H<sub>2</sub>O)<sub>6</sub>·4H<sub>2</sub>O Oxalate: Synthesis, Crystal Structure, Spectroscopic Characterizations and Comparison in the M<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>(H<sub>2</sub>O)<sub>6</sub>·<i>n</i>H<sub>2</sub>O (M = Ln, An) Series
作者:C. Tamain、B. Arab-Chapelet、M. Rivenet、X. F. Legoff、G. Loubert、S. Grandjean、F. Abraham
DOI:10.1021/acs.inorgchem.5b01781
日期:2016.1.4
actinide metals connected through oxalate ions. The americium atoms are nine-coordinated by six oxygen atoms from three bidentate oxalate ligands and three water molecules. The distances within the coordination sphere as well as infrared and Raman spectra of several isostructural lanthanide (Ce(III), Pr(III), Nd(III), Sm(III), Gd(III)) and actinide (Pu(III), Am(III)) oxalates were compared to evaluate the
草酸单晶Am 2(C 2 O 4)3(H 2 O)6 ·4H 2 O是通过使二酯缓慢水解原位产生草酸而制备的。它们的结构通过单晶X射线衍射确定,并通过直接方法和傅里叶差分技术解决。结构(空间群P 2 1 / c,a = 11.184(4)Å,b = 9.489(4)Å,c = 10.234(4)Å,β= 114.308(8)°,Z= 2)由通过草酸根离子连接的act系金属六元环形成的层组成。three原子由三个二齿草酸酯配体和三个水分子的六个氧原子九配位。几种同构镧系元素(Ce(III),Pr(III),Nd(III),Sm(III),Gd(III))和act系元素(Pu(III))在配位球体内的距离以及红外光谱和拉曼光谱,比较草酸Am(III)),以评估两个系列之间的相似性和差异。