Alfa Chemistry can provide testing services for stability of coordination complexes. In general stability means that a coordination complex may be stored for a long time under suitable conditions or this compound may be existing under suitable conditions. The stability of coordination complexes is an important aspect of coordination chemistry and find their application in all disciplines, from catalyst design to pharmaceutical studies of drug design and metabolism. The study of stability of coordination complexes is vital to determine their behavior in different environments, including change in temperature or changes in pH of the reaction medium. A higher stability constant indicates the greater stability of a coordination.
Alfa Chemistry has global testing abilities based on our comprehensive technical platforms, professional R&D team and high-quality of our results, we provide advanced research and testing expertise to stability of coordination complexes.
Factors on Stability of Complexes
There are many factors affected the stability of coordination complexes. Some of factors are described as follows:
▶ Nature of central metal ion
▶ Metal ionic size
▶ Temperature and pressure
▶ Size and charge of ligands
▶ Ligands concentration
▶ Electronegativity
▶ Metal ionic charge
▶ Ligands nature
▶ Basic character of ligands
▶ Chelating effect of ligands
Our Service Scope
Stability of coordination complexes includes there categories: redox stability, thermal stability and stability of complexes in solution. We are able to test different types stability of coordination complexes for satisfying your different requirements.
Redox
Stability
Redox stability refers to the degree of ease with which a metal gains and loses electrons.
Thermal
Stability
Thermal stability refers to the degree of ease with which a coordination complex is decomposed into its components after heating.
Stability
in Solution
Stability of coordination complexes in solution refers to the equilibrium constant of complexes that dissociate into metal ions and ligands in water when the dissociation is in equilibrium.
Our Analysis Methods
Alfa Chemistry utilizes a variety of testing methods to determine the stability of complexes. We all possess multiple corresponding analysis methods for different types stability. We will provide the most suitable method according to your needs.
▶ Redox stability
- Cyclic voltammetry method
- Determined by standard potential
▶ Thermal stability
- Thermogravimetric analysis method
- Differential thermal analysis method
▶ Stability in solution
The stability constant of coordination complexes in solution directly reflects the coordination complexes stability. There are so many parameters to determination of stability constant in solution for all types of complexes. According to different parameters, the corresponding specific analysis methods are as follows[1]:
- Solubility methods
- Ion exchange method
- Potentiometric methods
- Rate method
- Biological method
- Isotopic dilution method
- Conductance measurement method
- Paramagnetic resonance method
- Chromatography method
- Distribution method
- Electrometric techniques
- Polarographic method
- Freezing technique
- Spectrophotometric method
- pH method
- Nuclear magnetic resonance method
- Deflection method
- etc.
Some methods like spectrophotometric method, Bjerrum’s method, distribution method, ion exchange method, electrometric techniques, and potentiometric method have a huge contribution in quantitative analysis by easily finding the stability constants of metal complexes in aqueous solutions.
Our Advantages
▶ Short Detection Cycle
▶ Competitive Price
▶ Years of Experience
▶ Professional Equipments
▶ Reliable Results
▶ Highly Skilled Analysis Teams
Ordering Process
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Tell us your needs and requirements
Our specialist develop optimal solutions for you
Delivery your samples to our laboratory
Test of samples according to the experimental plan
Pay the balance and we provide professional test report
Need stability testing requirements for coordination complexes? Alfa Chemistry will help you solve your any analytical needs, whilst providing a fast turnaround time and very competitive rates. Please do not hesitate to contact us for understanding more detailed information about our analytical services, we will answer you as soon as possible.
Reference
- Singh J.; et al. Stability constants of metal complexes in colution[M], 2020.
