Related Experiment Video
Updated: Jun 1, 2026
![[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
Aquabis-(6-bromo-picolinato-κN,O)copper(II).
Fei-Long Hu1, Zhuang Yue, Mi Yan
1College of Chemistry and Ecological Engineering, Guangxi University for Nationalities, Nanning 530006, People's Republic of China.
This study details the crystal structure of a copper compound, [Cu(C(6)H(3)BrNO(2))(2)(H(2)O)], revealing a distorted trigonal-bipyramidal coordination. Hydrogen bonds form chains within the crystal structure.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Coordination Chemistry
Background:
- Copper complexes are vital in catalysis and materials science.
- Understanding coordination geometries is key to predicting chemical properties.
Purpose of the Study:
- To elucidate the coordination environment and crystal structure of a novel copper(II) complex.
- To analyze the intermolecular interactions governing crystal packing.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Coordination geometry and hydrogen bonding interactions were analyzed.
Main Results:
- The copper(II) center exhibits a distorted trigonal-bipyramidal coordination geometry.
- Two N,O-bidentate ligands and a water molecule coordinate to the copper atom.
- The dihedral angle between the pyridine rings is 67.6°.
- O-H⋯O hydrogen bonds link molecules into chains propagating along the [100] direction.
Conclusions:
- The study provides detailed structural insights into copper coordination complexes.
- The observed hydrogen bonding network influences the solid-state architecture.
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.
Structural 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 be...
Coordination Number and Geometry
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
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...
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene

