Transition Metal & Coordination Chemistry
Your master tool to knowledges and calculations. related to isotopes.
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Coordination Structure & Nomenclature
This module introduces the structure of coordination complexes, including ligand types, denticity, coordination number, geometry, and systematic IUPAC naming.
Structures & IUPAC Nomenclature
The geometry of coordination complexes depends primarily on the coordination number. The most common geometries are summarized below.
| Coordination Number | Geometry | Example |
|---|---|---|
| 2 |
Linear
|
[Ag(NH₃)₂]⁺ |
| 4 |
Tetrahedral
|
[NiCl₄]²⁻ |
| 4 |
Square Planar
|
[PtCl₄]²⁻ |
| 5 |
Trigonal Bipyramidal
|
Fe(CO)₅ |
| 5 |
Square Pyramidal
|
[CuCl₅]³⁻ |
| 6 |
Octahedral
|
[Co(NH₃)₆]³⁺ |
Ligands differ in denticity, donor atoms, and ligand field strength. Explore common ligands used in coordination chemistry.
Common Ligands
Electronic Structure & Magnetism
This module explores the electronic structure of transition-metal complexes and uses Valence Bond Theory and Crystal Field Theory to predict hybridization, spin state, and magnetic behavior.
d-Electron Configuration Calculator
Determine the electron configuration of a transition metal and its cation, then find the resulting d-electron count and magnetic behavior.
Valence Bond Theory Tool
Predict hybridization, geometry, inner-orbital vs outer-orbital character, and magnetic behavior of coordination complexes using Valence Bond Theory.
Crystal Field Theory Tool
Explore d-orbital splitting, electron configuration, spin state, magnetic behavior, CFSE, and Jahn–Teller tendencies of coordination complexes using Crystal Field Theory.
Coordination Properties & Isomerism
This module explores how different ligand arrangements around a metal center produce geometric and optical isomers and influence observable properties such as color.
Generate common geometric isomers of coordination complexes, including cis/trans and fac/mer arrangements.
Detect common cases of optical activity in coordination compounds and visualize enantiomeric pairs.
Estimate crystal field splitting (Δ₀), predict absorbed wavelength, and determine the observed color of a coordination complex.
Results
Ligand field strength:
Crystal field splitting (Δ₀): cm⁻¹
Absorbed wavelength: nm
Absorbed color:
Observed color:
Calculation
Crystal field splitting energy is related to photon energy:
Δ₀ = hν
ν = c / λ
Therefore:
Δ₀ = hc / λ
Solving for wavelength:
λ = hc / Δ₀
Using spectroscopic units:
λ (nm) = 10⁷ / Δ₀ (cm⁻¹)