%0 Generic
%A Xia, Jun
%A Zhao, Bin
%A Wang, Hong-Sheng
%A Shi, Wei
%A Ma, Yue
%A Song, Hai-Bin
%A Cheng, Peng
%A Liao, Dai-Zheng
%A Yan, Shi-Ping
%D 2007
%T Two- and Three-Dimensional Lanthanide Complexes: Synthesis, Crystal
Structures, and Properties
%U https://acs.figshare.com/articles/dataset/Two_and_Three_Dimensional_Lanthanide_Complexes_Synthesis_Crystal_Structures_and_Properties/3010339
%R 10.1021/ic061620p.s001
%2 https://acs.figshare.com/ndownloader/files/4711651
%K isostructural
%K 2 D
%K 3L
%K acid
%K 3 D frameworks
%K lanthanide contraction effect
%K Cc space group
%K DD
%K polymer
%K DM
%K Ln
%K 2 D monolayer
%K complex
%X 3,5-Pyrazoledicarboxylic acid (H3L) reacts with nitrate salts of lanthanide(III) (Ln = Pr, Nd, Sm, Eu, Gd, Tb, Dy,
Ho, and Er) under hydrothermal conditions to form a series of lanthanide polymers 1−9. These nine polymers have
the same crystal system of monoclinic, but they exhibit three different kinds of metal−organic framework structures.
The complexes {[Ln2(HL)3(H2O)4]·2H2O}n (Ln = Pr (1), Nd (2), and Sm (3)) were isostructural and exhibited
porous 3D frameworks with a Cc space group. The complexes {[Ln2(HL)3(H2O)3]·3H2O}n (Ln = Eu (4), Gd (5),
and Tb (6)) were isostructural and built 2D double-decker (2DD) frameworks with a P21/c space group. The complexes
{[Ln(HL)(H2L)(H2O)2]}n ((Ln = Dy (7), Ho (8), and Er (9)) were also isostructural and formed 2D monolayer (2DM)
frameworks with a P21/n space group. The structure variation from the 3D porous framework to the 2D double-decker to the 2D monolayer is attributed to the lanthanide contraction effect. Notably, six new coordination modes
of 3,5-pyrazoledicarboxylic acid were observed, which proved that 3,5-pyrazoledicarboxylic acid may be used as
an effective bridging ligand to assemble lanthanide-based coordination polymers. The photophysical and magnetic
properties have also been investigated.
%I ACS Publications