What are coordination compounds known for in various fields?
- Analytical chemistry
- Metallurgy
- Biological systems
- Industry
- Medicine
Coordination compounds play important functions across these areas.
Coordination compounds are used in chemical analysis for what purpose?
- Qualitative analysis
- Quantitative analysis
They provide familiar colour reactions with metal ions and ligands, aiding in detection and estimation.
Name some reagents used in coordination compound analysis.
- EDTA
- DMG (dimethylglyoxime)
- a-nitroso-B-naphthol
- cupron
These reagents are utilized for detecting and estimating metal ions.
How is the hardness of water estimated?
By simple titration with Na,EDTA
Calcium and magnesium ions form stable complexes with EDTA, allowing for selective estimation.
What is the coordination entity formed when gold combines with cyanide?
[Au(CN)2]
This occurs in the presence of oxygen and water, allowing for the separation of gold from the solution.
What process is used to purify impure nickel?
Conversion to Ni(CO)4, which is then decomposed
This yields pure nickel through the formation and decomposition of coordination compounds.
What is the role of chlorophyll in biological systems?
It is a coordination compound of magnesium
Chlorophyll is responsible for photosynthesis.
What is haemoglobin and its significance?
A coordination compound of iron that acts as an oxygen carrier
It is the red pigment of blood.
What is Vitamin B12 and its composition?
A coordination compound of cobalt
It is known as the anti-pernicious anemia factor.
Name two enzymes that are coordination compounds.
- Carboxypeptidase A
- Carbonic anhydrase
These enzymes act as catalysts in biological systems.
What is the Wilkinson catalyst used for?
Hydrogenation of alkenes
It is a rhodium complex, (Ph3P)RhCl.
How are articles electroplated with silver and gold more effectively?
From solutions of complexes [Ag(CN)2] and [Au(CN)2]
This results in smoother and more even electroplating compared to simple metal ions.
What role does hypo solution play in black and white photography?
It dissolves undecomposed AgBr to form a complex ion (Ag(S2O3)2)3-
This process is part of fixing the developed film.
What is chelate therapy used for in medicinal chemistry?
Treatment of metal toxicity in plant/animal systems
Chelating ligands like D-penicillamine and desferrioxime B remove excess copper and iron.
What is the use of EDTA in medicine?
Treatment of lead poisoning
EDTA forms coordination compounds that help in detoxification.
Name two coordination compounds of platinum that inhibit tumor growth.
- Cis-platin
- Related compounds
These compounds are significant in cancer treatment.
