Resonance Chemistry Coordination Compounds
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Central Metal Ion In Complex Compound Acts As, Complex Compounds, Coordinate Ionic Bond, Coordination Complex, Coordination Compounds, Coordination Compounds Examples, Coordination Isomers, The Compound Containing Coordinate Bond Is, Transition Metals Form Complex Compounds, Werner's Theory
Sure! Here's a clear explanation of Resonance as it relates to Coordination Compounds in Chemistry:
Contents [hide]
- 1
Resonance in Chemistry โ Coordination Compounds
- 2
Resonance in Coordination Compounds
- 2.1
Where Resonance is Seen in Coordination Compounds:
- 2.2 Ligands like NOโโป (Nitrito/Nitro)
- 2.3 Carbonate (COโยฒโป), Oxalate (CโOโยฒโป) Ligands
- 2.4 ฯ-backbonding and Resonance
- 2.5
Effect of Resonance on Coordination Compounds:
- 2.6
Summary Table
- 2.7 Resonance Chemistry Coordination Compounds
- 2.8 i-chemistry - dpp
- 2.9 SOLUTIONS OF COORDINATION COMPOUNDS
- 2.10 Coordination Compounds
- 2.11 (968)-chemistry-gyan-sutra-jee-main.pdf
- 2.12 28. CO - O R D I N AT I O N COMPOUNDS
- 2.13 COORDINATION COMPOUNDS
- 2.1
Resonance in Chemistry โ Coordination Compounds
What is Resonance?
Resonance is a concept used to describe the delocalization of electrons in molecules or ions that cannot be represented by a single Lewis structure. Instead, multiple contributing structures (resonance structures) are drawn to show all possible placements of electrons.
Resonance in Coordination Compounds
Coordination compounds involve central metal atoms or ions bonded to surrounding ligands. In some of these compounds, resonance occurs within the ligands or between metal and ligand due to the delocalization of ฯ-electrons.
Where Resonance is Seen in Coordination Compounds:
-
Ligands like NOโโป (Nitrito/Nitro)
- Can bind in different ways (linkage isomerism):
- -NOโ (nitro, N-bonded)
- -ONO (nitrito, O-bonded)
- Resonance occurs due to shifting of electrons between nitrogen and oxygen.
- Can bind in different ways (linkage isomerism):
-
Carbonate (COโยฒโป), Oxalate (CโOโยฒโป) Ligands
- These anionic ligands show resonance within their own structure.
- The electron density is delocalized across multiple oxygen atoms.
-
ฯ-backbonding and Resonance
- In metal carbonyls like [Fe(CO)โ
], resonance can be observed due to ฯ-back donation:
- The metal donates electron density into the ฯ* (antibonding) orbital of CO.
- This creates a resonance-type delocalization between metal and ligand.
- In metal carbonyls like [Fe(CO)โ
], resonance can be observed due to ฯ-back donation:
Effect of Resonance on Coordination Compounds:
- Stabilizes the ligand and the overall complex.
- Affects bond lengths (due to delocalization).
- Influences color, magnetism, and reactivity.
Summary Table
Concept | Example | Resonance Role |
---|---|---|
Linkage isomerism | NOโโป as ligand | Delocalization between N and O |
Chelating ligands | Oxalate (CโOโยฒโป), Carbonate (COโยฒโป) | Delocalized ฯ-system in ligand |
ฯ-back bonding | [Fe(CO)โ ], [Ni(CO)โ] | Resonance between metal and CO |
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