Related Experiment Video
Updated: Jun 13, 2025
10:51
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
12.1K
Synthesis, Structure, and Properties of a Copper(II) Binuclear Complex Based on Trifluoromethyl Containing
Olga G Shakirova1,2, Tatiana D Morozova2, Yulia S Kudyakova3
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russia.
International Journal of Molecular Sciences
|September 14, 2024
Summary
A novel copper(II) complex with methyl-5-(trifluoromethyl)pyrazol-3-yl-ketazine (H2L) ligand exhibits significant dose-dependent cytotoxicity against various human cancer cell lines. This discovery holds promise for developing new anti-cancer agents.
Area of Science:
- Inorganic Chemistry
- Coordination Chemistry
- Medicinal Chemistry
Background:
- The synthesis and characterization of novel metal complexes are crucial for exploring new therapeutic agents.
- Pyrazolyl-ketazine ligands offer versatile coordination possibilities due to their nitrogen donor atoms.
- Copper complexes have demonstrated a range of biological activities, including anticancer properties.
Purpose of the Study:
- To synthesize and characterize a new copper(II) complex with a methyl-5-(trifluoromethyl)pyrazol-3-yl-ketazine ligand (H2L).
- To investigate the coordination behavior of the polydentate ligand with copper(II).
- To evaluate the cytotoxic activity of the synthesized ligand and its copper(II) complex against a panel of human cancer cell lines.
Main Methods:
- Single-crystal X-ray diffraction analysis to determine the structure of the copper(II) complexes.
- Infrared (IR) spectroscopy for ligand and complex characterization.
- Static magnetic susceptibility measurements to study magnetic properties.
- In vitro cytotoxic assays on human cell lines (MCF7, Hep2, A549, HepG2, MRC5).
Main Results:
- Two copper(II) complexes, [Cu2L2]∙C2H5OH (1) and [Cu2L2((CH3)2SO)] (2), were successfully synthesized and characterized.
- X-ray diffraction confirmed the coordination of the polydentate ligand through both acyclic and heterocyclic nitrogen atoms.
- The copper(II) complex 1 demonstrated potent, dose-dependent cytotoxicity against all tested cancer cell lines, with LC50 values ranging from 0.18 to 4.03 μM.
Conclusions:
- The methyl-5-(trifluoromethyl)pyrazol-3-yl-ketazine ligand effectively coordinates with copper(II) ions.
- The synthesized copper(II) complex exhibits significant cytotoxic activity against human cancer cells, suggesting potential as an anticancer therapeutic.
- Further research into the mechanism of action and structure-activity relationships is warranted.
![[DPEPhosbcpCu]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)
Related Concept Videos
02:42Valence Bond Theory
8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
02:57Coordination Number and Geometry
15.6K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.6K
03:02Colors and Magnetism
11.6K
Color in Coordination Complexes
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...
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...
11.6K
02:34Structural Isomerism
19.1K
Isomerism in Complexes
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...
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...
19.1K
03:45Formation of Complex Ions
23.5K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.5K
02:54Coordination Compounds and Nomenclature
21.2K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
21.2K