Explain [Fe(CN)₆]³⁻ is an inner orbital complex whereas [FeF₆]³⁻ is an outer orbital complex. [Atomic number : Fe = 26]

Inner Orbital and Outer Orbital Complexes, Crystal Field Theory for Coordination Compounds | PadhAiPro

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TextInner Orbital and Outer Orbital ComplexesCrystal Field Theory for Coordination CompoundsCBSE PYQ

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Coordination compounds are widely present in the minerals, plant and animal worlds and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems and medicine. Alfred Werner's theory postulated the use of two types of linkages (primary and secondary), by a metal atom/ion in a coordination compound. He predicted the geometrical shapes of a large number of coordination entities using the property of isomerism. The Valence Bond Theory (VBT) explains the formation, magnetic behaviour and geometrical shapes of coordination compounds. It, however, fails to describe the optical properties of these compounds. The Crystal Field Theory (CFT) explains the effect of different crystal fields (provided by the ligands taken as point charges) on the degeneracy of d-orbital energies of the central metal atom/ion.

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TextCrystal Field Theory for Coordination Compounds

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TextCrystal Field Theory for Coordination CompoundsMagnetic Properties of Coordination Compounds