A Series of Lanthanide Frameworks with a Flexible Ligand, N,N′-Diacetic Acid Imidazolium, in Different Coordination Modes

{[La(trans-DAM)(cis-DAM)(H2O)2](ClO4)·3H2O} n (1), {[La2(trans-DAM)3(H2O)6](OH)3·7H2O} n (2), {[La(trans-DAM)2(H2O)2]Cl·4H2O} n (3), {[Nd(trans-DAM)2(H2O)2]X·3H2O} n (X = ClO4 (4), NO3 (5)), {[Nd(trans-DAM)(cis-DAM)(H2O)2]Cl·5H2O} n (6), and {[Nd(trans-DAM)2(H2O)2]Cl·5H2O} n (7) incorporating a flex...

Full description

Saved in:
Bibliographic Details
Published in:Crystal growth & design 2010-02, Vol.10 (2), p.658-668
Main Authors: Chai, Xiao-Chuan, Sun, Yan-Qiong, Lei, Ran, Chen, Yi-Ping, Zhang, Shuai, Cao, Yan-Ning, Zhang, Han-Hui
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Organic compounds
Other materials
Physics
Specific materials
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:{[La(trans-DAM)(cis-DAM)(H2O)2](ClO4)·3H2O} n (1), {[La2(trans-DAM)3(H2O)6](OH)3·7H2O} n (2), {[La(trans-DAM)2(H2O)2]Cl·4H2O} n (3), {[Nd(trans-DAM)2(H2O)2]X·3H2O} n (X = ClO4 (4), NO3 (5)), {[Nd(trans-DAM)(cis-DAM)(H2O)2]Cl·5H2O} n (6), and {[Nd(trans-DAM)2(H2O)2]Cl·5H2O} n (7) incorporating a flexible ligand HDAM (N,N′-diacetic acid imidazolium) were prepared in H2O or H2O/DMF (N,N′-dimethylformamide) solvents. Compounds 1 and 2 both contain the same 2D corrugated layers bridged by DAM− with different bridging modes to form different 3D structures, exhibiting tcs and (4,6)-connected topologies, respectively. The structural differences of 1 and 2 lie in the linkages of DAM− between the layers. Compound 3 also possesses a 3D architecture with an ant net, which is pillared by 2D (4,4) fan-shaped layers in an −ABAB− sequence. Compounds 4−6 contain similar 2D layers to 1 and 2. The analogous cationic structures 4 and 5 show a 4-connected sql net and 6 presents a (4,5)-connected network, resulting from the different modes of flag-like DAM− above and below the layers. Compound 7 with identical molecular formula to 6 displays a 2D double-layer, consisting of a couple of (4,4) rectangular grid layers. It exhibits a (3,6)-connected network. Additionally, IR and UV−visible spectroscopy, the luminescent properties, and thermogravimetric analyses are discussed.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg901075r