Table of contents | |
Introduction | |
Geometrical Isomerism in Coordination Compounds | |
Crystal Field Theory | |
Spectrochemical Series: Strong Field Ligand | |
Spectrochemical Series: Weak Field Ligand |
Coordination compounds may seem complex, but with the help of these engaging mnemonics, you’ll master their structures, naming rules, and bonding principles in no time! Let's make learning fun and memorable.
- Cis isomer: Ligands are positioned next to each other, usually at a 90° or 180° angle.
- Trans isomer: Ligands are positioned opposite each other, typically at 180°.
Mnemonic: "Cis Stays Close, Trans Travels Away."
Explains: The difference between strong-field and weak-field ligands.
The ligands in increasing order of their field strength are:
NCS⁻ (Thiocyanate), NO₂⁻ (Nitrite), NH₃ (Ammonia), en (Ethylenediamine), CN⁻ (Cyanide), CO (Carbon Monoxide).
The weak field ligands in increasing order of their field strength are:
I⁻ (Iodide) < Br⁻ (Bromide) < Cl⁻ (Chloride) < S²⁻ (Sulfide) < F⁻ (Fluoride) < OH⁻ (Hydroxide) < SO₄²⁻ (Sulphate) < C₂O₄²⁻ (Oxalate) < H₂O (Water).
By using these fun and memorable mnemonics, understanding the complexities of coordination compounds, their isomerism, and field strength becomes much easier. Keep practicing, and soon these concepts will feel second nature!
101 videos|287 docs|123 tests
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1. What is geometrical isomerism in coordination compounds? |
2. How does Crystal Field Theory explain the color of coordination compounds? |
3. What are strong field and weak field ligands in the context of the spectrochemical series? |
4. How can mnemonics help in remembering the order of ligands in the spectrochemical series? |
5. Why is the understanding of geometrical isomerism important in coordination chemistry? |
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