12.20 [Cr(H2O)6]2+ is labile, but [Co(NH3)6]3+ is inert, and the NH3 ligands are not well equipped to bridge two metals. Therefore, the reaction is likely to be an outer-sphere reaction.

Is the reaction CO NH3 6 3+ cr H2O 6 2+ likely to proceed by an inner sphere or outer-sphere mechanism explain your answer?

12.20 [Cr(H2O)6]2+ is labile, but [Co(NH3)6]3+ is inert, and the NH3 ligands are not well equipped to bridge two metals. Therefore, the reaction is likely to be an outer-sphere reaction.

What is electron transfer reaction with mechanism?

Electron transfer (ET) occurs when an electron relocates from an atom or molecule to another such chemical entity. ET is a mechanistic description of certain kinds of redox reactions involving transfer of electrons. Electrochemical processes are ET reaction. ET reactions are relevant to photosynthesis and respiration.

How are electrons transferred from one molecule to another?

The electron carriers take the electrons to a group of proteins in the inner membrane of the mitochondrion, called the electron transport chain. As electrons move through the electron transport chain, they go from a higher to a lower energy level and are ultimately passed to oxygen (forming water).

How are electrons transferred in redox reactions?

Reducing agents are also called electron donors, while oxidizing agents are also called electron acceptors. In a redox reaction, electrons transfer from a set of orbitals on the electron donor called the donor orbitals into a set of orbitals on the acceptor called the acceptor orbitals.

What is Marcus Hush theory?

Marcus Hush theory (M-H theory) was developed in 1956 by Rudolph A. Marcus which explains the fundamentals of the redox/ electron transfer reactions in terms of the rate of jumping/moving an electron from oxidant species (electron donor) to the reductant (electron acceptor).

What are inner sphere mechanism and outer-sphere mechanism?

The key difference between inner sphere and outer sphere mechanism is that inner sphere mechanism occurs between complexes via a binding ligand whereas outer sphere mechanism occurs between complexes that do not undergo substitution.

What is single electron transfer?

Single electron transfer (SET) reactions are characterized by electron transfer from a nucleophile to a substrate producing a radical intermediate. In 1966, Kornblum & Russell proposed the details of SRN1 reactions.

What is the order of electron transfer reaction?

This is accomplished as each Fe atom gives up two electrons, while each Cu2+ gains two electrons, as a result of which two electrons are transferred from Fe atoms to Cu2+ ions in solution. This is an example of an electron transfer reaction. The reaction is given by: Cu2+ + Fe → Cu + Fe2+.

What is a transfer of electrons called?

The attraction between oppositely charged ions is called an ionic bond , and it is one of the main types of chemical bonds in chemistry. Ionic bonds are caused by electrons transferring from one atom to another.

What is the role of electron transfer?

Electron transfer reactions have a vital importance in biological systems, being, for example, responsible for such acts as, activation of sensory proteins1, DNA UV-damage repair2, energy harvesting3, magnetic field sensing4,5 and many others.

What is Marcus cross relation?

Abstract. Application of the Marcus cross relation (MCR) to determine electron transfer rate constants is well documented. In addition to outer sphere reduction/oxidation of O2/O2˙−, the MCR is also applicable for proton transfer (PT), proton-coupled electron transfer (PCET), and hydride transfer rate constants.

What is Marcus inverted region?

The “Marcus Inverted Region” (MIR) is that part of the function of rate constant versus free energy where a chemical reaction becomes slower as it becomes more exothermic.

What is an electron transfer reaction?

1 Electron transfer reaction. Electron transfer reaction is a reaction in which a single electron is transferred from one molecule to another [1]. 2 Mechanism of Electron Transfer Reactions. The process of electron transfer from one species to another species leads to the oxidation of the donor and reduction of the acceptor. 3 Marcus Theory.

How does electron transfer occur between inorganic complexes?

The process of electron transfer from one species to another species leads to the oxidation of the donor and reduction of the acceptor. The mechanism by which the electron transfer occurs between inorganic complexes can be classified in to two types: inner sphere electron transfer mechanism and outer sphere electron transfer mechanism.

What happens to the coordination sphere when electrons are transferred?

Outer Sphere Electron Transfer Mechanism In this mechanism, there is a direct transfer of electrons from the reductant to oxidant and the coordination sphere remains intact. The ligands in both the reactants remain as such and the bond making or bond-breaking does not take place.

What is the general reaction coordinate diagram for electron transfer reactions?

The general reaction coordinate diagram for the mechanism involved outer-sphere electron transfer reactions. In the transition state of the complex, the electrons have equal probability to be present on either of the metal center. In order to proceed further, we need to recall the concept of inert and labile complexes first.