Related Experiment Video
Updated: Jun 17, 2026

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
Soft chiral-bridged binuclear Pt(II) complexes with cyclometalated N-heterocyclic carbene ligands for multicolor
Bao Zhang1, Mingliang Chen1, Wenjing Dong1
1College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China. xianghaifeng@scu.edu.cn.
Abstract:
Half-lantern binuclear Pt(II) complexes with cyclometalated N-heterocyclic carbene ligands deliver red to green circularly polarized luminescence (FWHM: 50-61 nm). The presence of soft chiral-bridged ligands leads to efficient chiral self-sorting of metal-induced planar chirality (ee > 99%) and strong phosphorescence (with a quantum yield, lifetime, and an asymmetry factor of up to 71.4%, 1.78 µs, and 2.33 × 10-3, respectively).
More Related Videos
Related Concept Videos
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Valence Bond Theory
Metal-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...
Stereoisomerism
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...

