low-spin complex

A consequence of this is that low-spin complexes are much more common.

A complex in which all d electrons are paired is called a low-spin complex.

Strong ligand fields lead to low-spin complexes which cause some exceptions to 18-electron rule.

Note that low-spin complexes of Fe and Co are diamagnetic.

If the splitting is large enough to overcome the energy needed to place electrons in the same orbital, with opposite spin, a low-spin complex will result.

PS3 (thermophilic bacterium) cytochrome caa3 reacts slowly with cyanide which forms a low-spin complex with the CuBa3 centre.

The rule usefully predicts the formulae for low-spin complexes of the Cr, Mn, Fe, and Co triads.

It is now known that the iron(II) in hemoglobin is a low-spin complex, whereas in oxyhemoglobin it is a high-spin complex.

Whereas in deoxy-hemoglobin the iron atom lies above the plane of the heme, in the low-spin complex the effective ionic radius is reduced and the iron atom lies in the heme plane.