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Questions and Answers
Which type of hybridization is typically associated with inner orbital complexes?
Which type of hybridization is typically associated with inner orbital complexes?
- sp²d
- d²sp³ (correct)
- dsp²
- sp³d²
The complex ion $[Fe(CN)_6]^{4-}$ is described as a low spin complex with a d²sp³ hybridization. What does this indicate about the cyanide ligands (CN⁻)?
The complex ion $[Fe(CN)_6]^{4-}$ is described as a low spin complex with a d²sp³ hybridization. What does this indicate about the cyanide ligands (CN⁻)?
- They are strong field ligands that cause electron pairing. (correct)
- They have no impact on the spin state of the metal ion.
- They are weak field ligands that do not cause electron pairing.
- They are outer orbital ligands only.
Which statement accurately contrasts inner and outer orbital complexes?
Which statement accurately contrasts inner and outer orbital complexes?
- Inner orbital complexes are generally high spin, while outer orbital complexes are generally low spin.
- Inner orbital complexes use outer *d* orbitals for bonding, while outer orbital complexes use inner *d* orbitals.
- Inner orbital complexes are formed with weak field ligands and outer orbital complex are formed with strong field ligands.
- Inner orbital complexes involve *dsp²* or *d²sp³* hybridization, while outer orbital complexes involve *sp³d²* hybridization. (correct)
The complex $[Mn(CN)_6]^{3-}$ is paramagnetic with one unpaired electron. Considering its octahedral geometry and low spin nature, what can be concluded about the electronic configuration of $Mn^{3+}$ in this complex?
The complex $[Mn(CN)_6]^{3-}$ is paramagnetic with one unpaired electron. Considering its octahedral geometry and low spin nature, what can be concluded about the electronic configuration of $Mn^{3+}$ in this complex?
How does the spectrochemical series relate to the formation of inner and outer orbital complexes?
How does the spectrochemical series relate to the formation of inner and outer orbital complexes?
Determine the number of unpaired electrons and the magnetic character of $[Fe(CN)_6]^{4−}$?
Determine the number of unpaired electrons and the magnetic character of $[Fe(CN)_6]^{4−}$?
A metal ion has a $d^4$ electronic configuration. In an octahedral field, which scenario favors the formation of a low-spin complex?
A metal ion has a $d^4$ electronic configuration. In an octahedral field, which scenario favors the formation of a low-spin complex?
Which of the following statements correctly describes the relationship between ligand strength and the type of complex formed?
Which of the following statements correctly describes the relationship between ligand strength and the type of complex formed?
Which of the following complexes is most likely to be diamagnetic?
Which of the following complexes is most likely to be diamagnetic?
What is the hybridization of the central metal ion in $[Mn(CN)_6]^{3-}$ if it adopts a low-spin configuration?
What is the hybridization of the central metal ion in $[Mn(CN)_6]^{3-}$ if it adopts a low-spin configuration?
Flashcards
Inner Orbital Complex
Inner Orbital Complex
Inner orbital complexes where the hybridization involved is d²sp³ and electrons are spin-paired.
Outer Orbital Complex
Outer Orbital Complex
Outer orbital complexes where the hybridization involved is sp³d² and electrons are spin-free or high spin.
Valence Bond Theory
Valence Bond Theory
The theory explains the bonding in coordination compounds by considering the overlap of hybrid orbitals.
[Mn(CN)₆]³⁻
[Mn(CN)₆]³⁻
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[Fe(CN)₆]⁴⁻
[Fe(CN)₆]⁴⁻
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Octahedral Geometry
Octahedral Geometry
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Paramagnetic
Paramagnetic
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Hybridization
Hybridization
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Low spin complex
Low spin complex
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Study Notes
- For inner orbital complexes, inner (n-1) d orbitals and the outer ns and np orbitals hybridize
- Example: K4[Fe(CN)6], where the hybridization involved is d2sp3.
- Inner orbital complexes are also called spin-paired or low-spin or strong-field or covalent complexes.
- In an outer orbital complex, outer ns, np, and (n+1)d orbitals hybridize.
- Examples: [CoF6]3- ion, [Co(H2O)6]3+, [NiCl4]2-, [Ni(NH3)6]2+
- The hybridization involved is sp3d2.
- Outer orbital complexes are also called spin-free or high-spin or weak-field or ionic complexes.
Valence Bond Theory for Some Complexes
- Complex/ion: [Mn(CN)6]3-
- Electronic configuration and hybridization of Mn3+:
- Geometry: Octahedral
- Hybridization: d2sp3
- Low spin complex.
- Number of unpaired electrons/magnetic character: 1, Paramagnetic.
- Complex/ion: [Fe(CN)6]4-
- Electronic configuration and hybridization of Fe2+:
- Geometry: Octahedral
- Hybridization: d2sp3
- Low spin complex
- Number of unpaired electrons/magnetic character: 1. Paramagnetic
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