What is inner sphere and outer sphere mechanism?
Inner sphere mechanism and outer sphere mechanism are two different types of electron transfer in coordination complexes. The inner sphere mechanism occurs via a covalent bond or linkage while the outer sphere mechanism occurs between two separate species.
What are inner and outer sphere complexes?
In the outer sphere complex, the ion retains its hydration sphere and attaches to the surface via electrostatic forces, whereas the inner sphere complex is partially dehydrated and directly bound to the surface.
What is inner sphere mechanism in octahedral complex?
➢ Inner Sphere Electron Transfer Mechanism The octahedral complexes require the dissociation of one ligand so that the bridging ligand can play its role in creating an intimate contact between the reductant and oxidant so that electron transfer can occur.
What is an outer sphere ligand?
“Outer-sphere” ligands are not directly attached to the metal, but are bonded to the first coordination shell. Heme is an example of a biological coordination complex: the central iron ion is coordinated at the center of a porphyrin molecule by the latter’s four pyrrole nitrogen atoms.
What is outer sphere complex?
INTRODUCTION. The term outer-sphere complex formation refers to interactions of complex compounds which are coordinatively saturated {with respect to the inner coordi- nation sphere) with further charged or uncharged ligands. The existence of such interactions was postulated as early as 1913 by A.
What are the important factors for outer sphere electron transfer reactions?
Some examples of outer sphere mechanism are. Factors affecting outer sphere mechanism.
What are requirements for inner sphere mechanism?
Inner sphere electron transfer 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.