Related Experiment Video
Updated: Feb 24, 2026
Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
Published on: August 10, 2017
Chiral three-dimensional cadmium(II)-based coordination polymer constructed from a lactic acid derivative: synthesis,
Xiu Ju Yin1, Yan Lin1, Jia Hui Luo1
1School of Chemical and Biological Engineering, Hechi University, Hechi 563006, People's Republic of China.
None:
To obtain coordination polymers with nonlinear optical (NLO) activity, the lactic acid derivative (R)-5-(1-carboxyethoxy)isophthalic acid, or (R)-H3cia, was selected as the chiral ligand. Through a solvothermal reaction with Cd2+ in the presence of pyrazine (pyr), the chiral complex poly[tetraaquabis[μ-(R)-5-(1-carboxylatoethoxy)isophthalato](μ-pyrazine)tricadmium(II)], {[Cd3(C11H7O7)2(C4H4N2)(H2O)4]n or [Cd3{(R)-cia}2(pyr)(H2O)4]n (abbreviated as HU32-R), was synthesized successfully. Single-crystal X-ray diffraction analysis reveals that HU32-R crystallizes in the monoclinic space group I2 and features a three-dimensional framework. The complex exhibits good phase purity and certain water stability. Solid-state circular dichroism (CD) spectroscopy confirms its macroscopic chirality. Fluorescence spectroscopy shows an emission peak at 487 nm upon excitation at 365 nm. Furthermore, second-harmonic generation (SHG) measurements indicate that HU32-R possesses significant second-order NLO activity, with an intensity approximately 0.72 times that of potassium dihydrogen phosphate (KDP).
More Related Videos
14:44Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
10:52Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Related Concept Videos
02:57Coordination Number and Geometry
02:52Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
02:42Valence Bond Theory
02:34Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
02:37Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
02:51Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...