Color of Coordination Complexes Simulator

Color of Coordination Complexes

Visualizing d-d Transitions and the Complementary Color Wheel.

1. Select Complex (Titanium III)

Change Ligand (Spectrochemical Series)

Absorbed Wavelength 500 nm (Green)

Observed Color Violet-Red

Color

2. d-d Transition (Δₒ Energy)

↑

⚡

Δₒ

3. Chemical Principles

d-d Transition: Transition metal ions have degenerate d-orbitals that split into two energy levels (t₂g and eₐ) in a ligand field.

Absorption: When white light passes through, an electron in the lower t₂g level absorbs a photon with energy exactly equal to the gap (E = hc/λ = Δₒ) and jumps to the higher eₐ level.

Complementary Color: The absorbed wavelength is subtracted from the white light. The light that is transmitted (or reflected) is a mixture of the remaining wavelengths, which our eyes perceive as the complementary color on the color wheel.

Left Click + Drag to Rotate • The background light represents transmitted color

📚 Also Read

Lecture Notes

Search This Blog