What is the Difference Between Inner Sphere and Outer Sphere Mechanism?
🆚 Go to Comparative Table 🆚The difference between inner sphere and outer sphere mechanisms lies in the way electron transfer occurs between complexes. Here are the key differences:
- Inner Sphere Mechanism:
- Occurs between complexes via a bridging ligand.
- At least one of the complexes needs to be labile to allow the bridge to form.
- Bonds are broken and formed during the process.
- Involves the formation of coordination bonds.
- Outer Sphere Mechanism:
- Occurs between complexes that do not undergo substitution.
- No new bonds are broken or formed during the process.
- Does not involve the formation of coordination bonds.
- Electron transfer occurs via forcing the electrons to move through the space between separate chemical species.
In summary, inner sphere mechanisms involve the formation of coordination bonds and the breaking/forming of bonds during electron transfer, while outer sphere mechanisms do not involve the formation of coordination bonds and only electrons are transferred between separate chemical species without breaking/forming new bonds.
Comparative Table: Inner Sphere vs Outer Sphere Mechanism
Inner sphere and outer sphere mechanisms are two different types of electron transfer mechanisms. Here is a comparison of the key differences between them:
| Inner Sphere Mechanism | Outer Sphere Mechanism |
|---|---|
| Occurs via a covalent bond or linkage | Occurs between two separate species that do not undergo substitution |
| Ligands act as bridges between reactants during the reaction | No bridging between reactants, electron transfer occurs without any disruption of the coordination sphere |
| Rare in biological systems due to inhibition by large ligands | An alternative pathway for inner-sphere mechanism |
| Faster than inner sphere because the energetic demands are less | Occurs when none of the ligands can function as a bridge |
In summary, inner sphere mechanisms involve electron transfer via a covalent bond or linkage, while outer sphere mechanisms occur between separate species without any disruption of the coordination sphere.
- Inner vs Outer Sphere Mechanism
- Inner Planets vs Outer Planets
- Circle vs Sphere
- Ball vs Sphere
- Inner Join vs Outer Join
- Spin vs Orbital Angular Momentum
- Coordination Entity vs Coordination Sphere
- Exoskeleton vs Endoskeleton
- Inner vs Outer Hair Cells
- Heliocentric vs Geocentric
- Circular Motion vs Spinning Motion
- Rotation vs Revolution
- Orbit vs Orbital
- Inner vs outer London
- Centripetal vs Centrifugal Force
- Spiral vs Elliptical Galaxies
- Diameter vs Radius
- Biosphere vs Lithosphere
- Circular Motion vs Rotational Motion