Questions tagged [ligand-field-theory]
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How to explain oxidizing power from Molecular Orbital Theory
I am trying to explain the oxidizing property of $\ce{Fe^3+}$ in $\ce{H2O}$ and $\ce{CN^-}$ which is $\ce{[Fe(H2O)6]^3+}$ and $\ce{[Fe(CN)6]^3-}$.
The electrochemical reactions along with their ...
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Molecular orbital diagram for carbene-metal and carbodiphosphorane-metal interaction
I am interested in understanding how carbenes and carbodiphosphoranes interact differently with a transition metals. I would like to use qualitative molecular orbital theory arguments (with an ...
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Why CO is a stronger and more common ligand than N2?
Both $\ce{N2}$ and CO are considered sigma-donors and pi-acceptors.
Their molecular orbital diagrams are also similar, so why does CO generally bind more strongly and is a more common ligand?
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Why are ligand orbitals always lower in energy than the metal orbitals in the ligand field theory?
The below image has been used to represent the ligand field theory for transition metals:
(Source: https://chemed.chem.purdue.edu/genchem/topicreview/bp/ch12/ligand.php)
Also, other similar images ...
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Maximum absorption wavelength directly proportional to the donor number of the ligand for a copper(II) coordination complex
I am looking at a set of results showing a directly proportional relationship for an increasing maximum absorption wavelength (UV-Vis spectra) with increasing donor number of solvent ligands. The ...
user85551
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Strength of Pi Donor and Acceptors as Ligands
The spectrochemical series is usually known as the "strength" of the ligands. It makes sense on a basic level as the more willing a ligand is to donating its electrons (via a $\sigma$-bond), ...
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Tetrahedral complex and vibronic coupling or different rule for d-d transition?
I'm currently preparing a few slides for an upcoming talk in our group. I would like to mention some of the very basics regarding crystal field and ligand field theory as well, though this will not be ...
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Is Porphyrin Planar?
I have been looking at this diagram from quite some time, I know the 18 pi electron cycle that forms porphin(e) is definitely planar but what about the whole molecule?... The Nitrogen's act as a ...
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Why does the hexachlorocopper(II) ion not form?
I am not entirely sure if this question has been answered before, but I was wondering why when copper forms a complex ion with chlorine there are only 4 chlorine ligands. I asked my teacher and he ...
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Applying Ligand Field Theory, How Can The Color Of Transition Complex Ions Be Explained/Represented?
1.
To my understanding, Crystal Field Theory allows for an explanation for the colors of transition metal complex ions due to the d-d transitions which occur. This transition ∆o, is from the t2g ...
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Difference in properties of water as ligand vs 'in lattice'
I'm trying to understand the difference in properties between water in crystals in different positions in the lattice. In this wikipedia article It quotes:
Both notations can be combined as for ...
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Why does the nitrito ligand have a higher Δo than water in the spectrochemical series?
I collected some data to determine the value of $\Delta_\text{o}$ for a some transition metal complexes (attached) and I'm very confused as to why $\Delta_\text{o}$ for the $\ce{ONO-}$ ligand is ...
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When relaxing the strong field interaction, the (t2g)^2 configuration splits into 4 states. What is the symbolic configuration of the Eg state?
When relaxing the infinitely strong field, the electrons start to feel one another's presence. They will, therefore, give rise to sets of states such as T1g, T2g... for the (t2g)^2 initial ...
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How to find the ligand field splitting of d orbitals in a square planar complex?
I am working with a Iron square planar complex with $\ce{NH2-}$ and $\ce{OH-}$ ligands having cis and trans conformation. My question is how to theoretically/computationally calculate the ligand filed ...
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Can halide be a sigma donor?
When I took inorganic classes, I was told that halide is a pi donor. Assume I am using metal hexahalide why I can't put the $p_z$ orbital of the halides directing to the metal centre? With that halide ...
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Crystal Field Splitting Energy - Tetrachlorocuprate and Tetrachlorocobaltate
I'm a high schooler from India and it's my first time on this stack exchange. I was wondering why the crystal field splitting energy of tetrachlorocuprate differs so much from tetrachlorocobaltate.
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Finding the wavelength of maximum absorption and Crystal Field Splitting of [Ni(H2O)6]2+
(I haven't been here for a long time, so tell me if my formatting is fine)
Given
The $\ce{[Ni(H2O)6]^2+}$ complex appears green in solution from the transmitted light. Estimate the wavelength of ...
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