Do strong field ligands cause low spin?

Different ligands are associated with either high or low spin —a “strong field” ligand results in a large ∆o and a low spin configuration, while a “weak field” ligand results in a small ∆o and a high spin configuration.

What are high and low spin complexes?

The key difference between high spin and low spin complexes is that high spin complexes contain unpaired electrons, whereas low spin complexes tend to contain paired electrons. The terms high spin and low spin are related to coordination complexes. These are called spin states of complexes.

What is low spin?

Low-spin complexes: When crystal field splitting energy is smaller than electron pairing energy, the complexes formed are low-spin complexes. Concept: Theories of Bonding in Complexes.

Which of the following is low spin complex?

Usually inner orbital complexes `(d^(2)sp^(3))` are low-spin (or spin paired) complexes. `Fe^(3+)` has a `d^(5)` electronic configuration. Thus complexes with weak field ligands (such as halide ions) will have a high spin arrangement with five unpaired electrons.

What are strong field ligands?

Strong field ligands are ones that produce large splittings between the d orbitals and form low spin complexes. Examples of strong field ligands include CO, CN-, and NO2.

Which of the following complex has low spin?

[Cr(NH3)6]3+ undergoes d2sp3 hybridization and is a low spin complex.

What are the low spin complexes?

If the separation between the orbitals is large, then the lower energy orbitals are completely filled before population of the higher orbitals according to the Aufbau principle. Complexes such as this are called “low-spin” since filling an orbital matches electrons and reduces the total electron spin.

Which of the following is a low spin complex?

What are low spin complexes give example?

The usual Hund’s rule and Aufbau Principle apply. Examples of low-spin d6 complexes are [Cr(CN)6]3− and Cr(CO)6 , and examples of high-spin d6 complexes are [CrCl6]3− and Cr(H2O)6 .

Which is a high spin complex?

Only complex [Cr(gly)3] is a high spin complex because it contains a weak field ligand and these type of ligands can not pair up the unpaired electrons while in other options there are atleast one strong field ligand.

Which are weak field ligands?

Weak field ligands are ones that produce small splittings between the d orbitals and form high spin complexes. Examples of weak field ligands include the halogens, OH- and H2O. From a ligand field perspective these ions or molecules all have filled orbitals which can π bond with the metal d orbitals.

What is high spin complex?

Hint:A high spin complex refers to the complex in which the d-orbitals of the central metal atom is having greater number of unpaired electrons and it is called so, as each electrons possess a spin and each electron can be considered as a spin.

Is CN a strong field ligand?

CN is a strong field ligand.

What is high spin or low spin?

i. High-spin complexes: When crystal field splitting energy is greater than electron pairing energy, the complexes formed are high-spin complexes. ii. Low-spin complexes: When crystal field splitting energy is smaller than electron pairing energy, the complexes formed are low-spin complexes.

What is Strong field ligand?

Is water high spin or low spin ligand?

Water is a weak ligand and the energy gap between d to d* level is small. Hence the d electrons will ignore the small energy difference and be filled in the same way as in gaseous Fe3+ cation, where electrons will occupy orbitals singly and with parallel spins.