Department of Chemistry and Biochemistry, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States.
Inorg Chem. 2012 Aug 6;51(15):8419-24. doi: 10.1021/ic300958z. Epub 2012 Jul 17.
A series of isotypic rare earth phosphites (RE = Ce(III), Pr(III), Nd(III), Pu(III), or Am(III)) with the general formulas RE(2)(HPO(3))(3)(H(2)O) along with a Pu(IV) phosphite, Pu[(HPO(3))(2)(H(2)O)(2)], have been prepared hydrothermally via reactions of RECl(3) with phosphorous acid. The structure of RE(2)(HPO(3))(3)(H(2)O) features a face-sharing interaction of eight- and nine-coordinate rare earth polyhedra. By use of the crystallographic data from the isotypic series along with data from previously reported isotypic series, the ionic radii for higher coordinate Pu(III) and Am(III) were calculated. The (VIII)Pu(III) radius was calculated as 1.112 ± 0.004 Å, and the (IX)Pu(III) radius was calculated to be 1.165 ± 0.002 Å. The (VIII)Am(III) radius was calculated as 1.108 ± 0.004 Å, and the (IX)Am(III) radius was calculated as 1.162 ± 0.002 Å.
一系列同型的稀土亚磷酸盐（RE = Ce(III)、Pr(III)、Nd(III)、Pu(III)或 Am(III)），具有通式 RE(2)(HPO(3))(3)(H(2)O)，以及 Pu(IV)亚磷酸盐 Pu[(HPO(3))(2)(H(2)O)(2)]，是通过 RECl(3)与亚磷酸反应水热制备的。RE(2)(HPO(3))(3)(H(2)O)的结构具有八配位和九配位稀土多面体的共享面相互作用。通过使用同型系列的晶体学数据以及之前报道的同型系列的数据，计算了高配位 Pu(III)和 Am(III)的离子半径。(VIII)Pu(III)半径计算为 1.112 ± 0.004 Å，(IX)Pu(III)半径计算为 1.165 ± 0.002 Å。(VIII)Am(III)半径计算为 1.108 ± 0.004 Å，(IX)Am(III)半径计算为 1.162 ± 0.002 Å。
