Linked Questions
15 questions linked to/from Colour intensity of transition metal complexes
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Why copper(I) is unstable in aqueous medium?
I am expecting that $\ce{Cu+}$ attains a $\mathrm d^{10}$ configuration by losing one electron from s-subshell. Since it has fully filled d-orbital, it should be stable. But it is found that it is ...
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Why do octahedral metal ligand complexes have greater splitting than tetrahedral complexes?
Octahedral complexes have greater splitting in the d orbitals. Is it because octahedral complexes have more atoms and thus more interactions?
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3
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Can any atom donate more than 1 lone pair as a coordinate bond to the same metal?
This would mean the formation of a σ and one or two π bonds, all coordinate. I haven't heard of this happening, like a fluorine anion or water with two lone pairs on oxygen will donate ...
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Why do copper (II) complexes contain so many valence electrons?
Consider tetraaminecopper (II) ion. $\ce{[Cu(NH3)4]^2+}$ or $\ce{[Cu(NH3)4(H2O)2]^2+}$.
The copper(II) ion has the electron configuration $\mathrm{[Ar]\ 3d^9}$. How do the 4 electron pairs from the ...
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Why doesn't the bidentate ligand form dative bonding three times?
I was looking at this question where it asked you to work out the final complex formed when an excess of 1,2-diaminoethane is added to and aqueous solution of copper (II) sulphate.
So the equation I ...
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1
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Why is hexafluoridonickelate(IV) diamagnetic?
As fluoride is a weak-field ligand, it should not pair up the electrons. So why is $\ce{[NiF6]^2-}$ diamagnetic?
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5
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1
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Is the neutral di-µ-oxo-bridged manganese dimer with eight ammonia ligands a reasonable structure?
In its guide to model antiferromagnetic couplig, Gaussian uses $\ce{Mn2O2(NH3)8}$ as a model compound.[1] It argues that manganese is in II oxidation high spin state; in other words, in both manganese ...
- 44k
4
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2
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Understanding the Jahn–Teller elongation and compression for octahedral complexes (stabilisation/destabilisation of d orbitals)
I am currently learning about Jahn–Teller effect. For elongation I wondered why the d orbitals with $z$ component are stabilised when the metal–ligand bonds are getting longer? I thought a longer bond ...
user85551
3
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1
answer
385
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Spectrochemical series of TMs: why does the field-splitting parameter NOT steadily increase along a period?
Why doesn't the field splitting parameter increase steadily along the period for 3rd-row transition metals, as one would expect due to a better energy match between ligands and the metal as $Z_\mathrm{...
- 1,696
3
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1
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Why does the nature and oxidation state of a central metal affect field split?
I know the following factors affect the value of field splitting in a coordination compound:
No. of ligands surrounding the central atom.
Strength of the ligand (as per spectrochemical series)
Nature ...
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1
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3
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Which would have a more intense transition: a low spin d6 complex or a high spin d5 complex?
I have an assignment question for second year inorganic which asks to rank the intensity of d-d transitions for a number of complexes. Two are $\ce{[Fe(OH2)6]^3+}$ and $\ce{[Fe(CN)6]^4-}.$ Both will ...
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1
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About Fe(III) and Fe(II) coordination complexes
Why does Fe(III) form octahedral coordination complexes if it has 5 electrons in its d-orbitals? I understand that Fe(II) has 6 electrons in its d-orbitals and 6 lone pairs from 6 ligands as the 12 ...
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1
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1
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How can we predict the colour of transition metal complexes?
I am facing problems in indentifying colour of complex compunds just by seeing the their molecular formula. Is there any method or concept to predict the colour of complex compunds?
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What exactly is the d-orbital splitting and how does this affect the colors for transition metal compounds?
How does d-orbital splitting form colors for transition metals?
Why can't the electrons in the d-orbital split for the element Zinc?
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1
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Coordination dilemma, change of energy related to ligand distance
In octahedral field, the baricenter remains conserved and there is lowering of energy of $\mathrm{t_{2g}}$ orbitals.
What is a baricenter and why must it be conserved?
Why is there lowering of energy ...
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