Inner-orbital or low-spin or spin-paired complexes: Complexes that use inner d-orbitals in hybridisation; for example, [Co(NH3)6]3+. The hybridisation scheme is shown in the following diagram.
Outer-orbital or high-spin or spin-free complexes: Complexes that use outer d-orbitals in hybridisation; for example, [CoF6]3−. The hybridisation scheme is shown in the following diagram.
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An inner orbital complex is the one in which the central metal atom is attached to strong field ligands like NH3+ or CN- which pushes the outermost electrons into 3d subshll thus pairing up the unpaired electronsand the hybridisation will be d2sp3 hybridisation. While outer orbital complexes are the complexes which are attached to weak field ligands like Cl- etc and the outermost electrons are are pushed to 4d orbital
thus forming a sp3d2 hybridisation of the resultant complex
thus forming a sp3d2 hybridisation of the resultant complex
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If the ligands are same say NH3 than we see no. Of 3d orbitals which are half filled .
As ammonia is a strong field agent than it will bound all the unpaired electrons into paired electrons hence empty orbitls will be formed in which NH3 releases its electrons hence it will act as a inner orbita complex
As ammonia is a strong field agent than it will bound all the unpaired electrons into paired electrons hence empty orbitls will be formed in which NH3 releases its electrons hence it will act as a inner orbita complex
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1. The ligands (having less electronegetivity) which have the tendency to push away the orbital electrons of the central metal ion towards the inner orbitals, and go for hybridisation with these newly vacant orbitals, are able to form 'Inner' orbital complexes.
2. These ligands then are called 'Strong Field Ligands'.
3. They form low spin complexes.
4. Examples- CN- , CO, NH3
1. Similarly, ligands (having greater electronegetivty) which do not have the tendency to push away the electrons into inner orbitals due to electron withdrawing tendency form 'Outer' orbital complexes
2. These are called ' Weak Field Ligands ' .
3. They form 'High spin complexes'.
4. Examples- F- , Cl- , Br- , H2O.
Hope this helps you,
Cheers!!!
2. These ligands then are called 'Strong Field Ligands'.
3. They form low spin complexes.
4. Examples- CN- , CO, NH3
1. Similarly, ligands (having greater electronegetivty) which do not have the tendency to push away the electrons into inner orbitals due to electron withdrawing tendency form 'Outer' orbital complexes
2. These are called ' Weak Field Ligands ' .
3. They form 'High spin complexes'.
4. Examples- F- , Cl- , Br- , H2O.
Hope this helps you,
Cheers!!!
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Inner and outer orbital complexes basically refers to the difference in their preference to fill the D-Orbital.
The inner and outer orbital complexes are basically the other term used for high and low spin complexes.
Inner Orbital Complexes :- These are the compounds that first of all prefers to fill the D-Orbital that is the ligands at first fills up the D-Orbital and then the s and p orbitals.
The hybradization of such compounds therefore is d2sp3 (D-Orbital filled at first).
They are known as low spin complexes.
Outer Orbital Complexes :- These are the compounds that prefers to fill the D-Orbital at last (after s and p orbital) that is the ligands at first fills up the 's' and 'p' Orbital and then the D-Orbitals.
The hybradization of such compounds therefore is sp3d2 (D-Orbital filled at last).
They are known as high spin complexes.
The inner and outer orbital complexes are basically the other term used for high and low spin complexes.
Inner Orbital Complexes :- These are the compounds that first of all prefers to fill the D-Orbital that is the ligands at first fills up the D-Orbital and then the s and p orbitals.
The hybradization of such compounds therefore is d2sp3 (D-Orbital filled at first).
They are known as low spin complexes.
Outer Orbital Complexes :- These are the compounds that prefers to fill the D-Orbital at last (after s and p orbital) that is the ligands at first fills up the 's' and 'p' Orbital and then the D-Orbitals.
The hybradization of such compounds therefore is sp3d2 (D-Orbital filled at last).
They are known as high spin complexes.
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The complexes formed, if have inner d orbitals are called low spin complexes or inner orbital complexes and if having outer d orbitals are called high spin or outer orbital complex. The inner d orbitals are diamagnetic or less paramagnetic in nature hence, they are called low spin complexes.
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The main difference between
Inner and outer orbital complexes is that the hybridisation of the atomic orbitals of the central metal atom of inner orbital complexes involves inner sell d orbital whereas the hybridisation of the atomic orbitals of the central metal atom of outer orbital complexes involves outermost sell d...
Inner and outer orbital complexes is that the hybridisation of the atomic orbitals of the central metal atom of inner orbital complexes involves inner sell d orbital whereas the hybridisation of the atomic orbitals of the central metal atom of outer orbital complexes involves outermost sell d...
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Inner orbital complexes:
When the (n-1)d orbitals participate in the bonding , this is usually formed by the octahedral complexes having strong field ligand.
Outer orbital complexes:
The (n-1)d orbitals does not participate in the bonding , occurs in octahedral complexes having weak field ligand.
When the (n-1)d orbitals participate in the bonding , this is usually formed by the octahedral complexes having strong field ligand.
Outer orbital complexes:
The (n-1)d orbitals does not participate in the bonding , occurs in octahedral complexes having weak field ligand.
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