Outer Orbital Complex
| Also Known As | High-spin complex, weak-field complex, outer sphere complex (in VB theory) |
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What is Outer Orbital Complex?
An outer orbital complex (high-spin complex) is a coordination compound in which the ligand field splitting energy (Δ) is small compared to the electron pairing energy, so d-electrons fill outer orbitals (4d or 5p in outer sp³d² hybridization in older VB theory) rather than being paired in inner d-orbitals. In modern crystal field theory, these correspond to high-spin complexes with weak-field (outer) ligands. They have maximum unpaired electrons and are paramagnetic.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
An outer orbital complex (high-spin complex) is a coordination compound in which the ligand field splitting energy (Δ) is small compared to the electron pairing energy, so d-electrons fill outer orbitals (4d or 5p in outer sp³d² hybridization in older VB theory) rather than being paired in inner d-orbitals. In modern crystal field theory, these correspond to high-spin complexes with weak-field (outer) ligands. They have maximum unpaired electrons and are paramagnetic.
Understanding magnetic properties of transition metal complexes. Biological iron complexes (hemoglobin oxygen binding — spin state changes). Designing magnetic materials. Understanding catalytic mechanisms. MRI contrast agents (high-spin Gd³⁺). Analytical chemistry (color and paramagnetism for ident…
Depends on specific complex. Transition metal ions vary in toxicity. Handle transition metal solutions with appropriate precautions.