quenching of orbital angular momentum in transition metal complexes is caused by verwey transition.
quenching of orbital angular momentum in transition metal complexes is caused by verwey transition.
quenching of orbital angular momentum in transition metal complexes?
verwey transition
orbital angular momentum is generated when an electron in an orbital of a degenerate set of orbitals is moved to another orbital in the set by rotation. in complexes of low symmetry certain rotations are not possible. in that case the orbital angular momentum is said to be "quenched" and formula_13 is smaller than might be expected (partial quenching), or zero (complete quenching). there is complete quenching in the following cases. note that an electron in a degenerate pair of d or d orbitals cannot rotate into the other orbital because of symmetry.
magnetochemistry
just like for angular velocity, there are two special types of angular momentum: the spin angular momentum and the orbital angular momentum. the spin angular momentum of an object is defined as the angular momentum about its centre of mass coordinate. the orbital angular momentum of an object about a chosen origin is defined as the angular momentum of the centre of mass about the origin. the total angular momentum of an object is the sum of the spin and orbital angular momenta. the orbital angular momentum vector of a particle is always parallel and directly proportional to the orbital angular velocity vector ω of the particle, where the constant of proportionality depends on both the mass of the particle and its distance from origin. however, the spin angular momentum of the object is proportional but not always parallel to the spin angular velocity ω, making the constant of proportionality a second-rank tensor rather than a scalar.
angular momentum