Related Experiment Video
Updated: May 31, 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
A new copper(II) complex based on 1-[(1H-benzotriazol-1-yl)meth-yl]-1H-1,2,4-triazole
Abstract:
The title complex, tetra-aqua-{1-[(1H-benzotriazol-1-yl)meth-yl]-1H-1,2,4-triazole-κN(4)}(sulfato-κO)copper(II) sesquihydrate, [Cu(SO(4))(C(9)H(8)N(6))(H(2)O)(4)]·1.5H(2)O, is composed of one copper atom, one 1-[(2H-benzotriazol-1-yl)meth-yl]-1-H-1,2,4-triazole (bmt) ligand, one sulfate ligand, four coordin-ated water mol-ecules and one and a half uncoordinated water mol-ecules. The Cu(II) atom is six-coordinated by one N atom from a bmt ligand and five O atoms from the monodentate sulfate ligand and four water mol-ecules in a distorted octa-hedral geometry. In the crystal, adjacent mol-ecules are linked through O-H⋯O and O-H⋯N hydrogen bonds involving the sulfate anion and the coordin-ated and uncoordinated water mol-ecules into a three-dimensional network.
Related Concept Videos
Coordination Number and Geometry
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group with both...
Complexometric Titration: Overview
Ladder Diagrams: Complexation Equilibria
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
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.

