Structural Variations of 2D and 3D Lanthanide Oxalate Frameworks Hydrothermally Synthesized in the Presence of Hydrazinium Ions
作者:Marine Ellart、Florent Blanchard、Murielle Rivenet、Francis Abraham
DOI:10.1021/acs.inorgchem.9b02781
日期:2020.1.6
N2H5[Ln(H2O)}(C2O4)2], Ln = Sm, Eu, Gd, Tb, Dy, and Ho (3); N2H5[Ln(C2O4)2]·nH2O, Ln = Yb, n = 3, and Lu, n = 2 (5). The two others do not contain hydrazinium ions. Compound 4, obtained only with Ln = Er and Tm, contains a neutral lanthanide oxalate arrangement, [Ln(H2O)}2(C2O4)3]. Finally, in the experimental conditions, crystals of compound 6 were obtained only for Lu, [Lu(H2O)2}2(C2O4)3]·2H2O
根据4f元素的性质,在离子存在下水热合成了六个不同的草酸镧系元素。它们中的四个对应于通式N2H5 [Ln(C2O4)2]·nH2O,但根据配位的水分子或肼离子的数量和结构安排,N2H5 [La(C2O4)2]具有不同的结构式(1) ; N2H5 [Ln2(N2H5)}(C2O4)4]·4H2O,Ln = Ce,Pr,Nd和Sm(2);N2H5 [Ln(H2O)}(C2O4)2],Ln = Sm,Eu,Gd,Tb,Dy和Ho(3);N 2 H 5 [Ln(C 2 O 4)2]·nH 2 O,Ln = Yb,n = 3,Lu,n = 2(5)。另外两个不含肼离子。仅用Ln = Er和Tm获得的化合物4含有中性草酸镧系元素[[Ln(H2O)} 2(C2O4)3]。最终,在实验条件下,仅对于Lu [[Lu(H2O)2} 2(C2O4)3]·2H2O获得了化合物6的晶体。对于Ln = La到Ho,配位数为CN