Inorganic Chemistry

Inorganic chemistry covers the chemistry of all elements except carbon in its primary organic forms, although it includes organometallic compounds that bridge the two disciplines. The field is particularly concerned with the chemistry of transition metals, the structures and bonding of coordination compounds, and the properties of solid-state materials.

Key Concepts

Transition metal chemistry is characterised by the formation of coordination compounds, in which a central metal ion is surrounded by ligands donating electron pairs. Crystal field theory explains the colour and magnetic properties of these compounds by considering how ligand electric fields split the $d$-orbital energy levels. The magnitude of this splitting ($\Delta$) determines whether a complex is high-spin or low-spin.

Worked Example: Coordination Number and Geometry

A cobalt(III) complex with six ammonia ligands, $[\text{Co(NH}_3)_6]^{3+}$, adopts an octahedral geometry with coordination number six. Each $\text{NH}_3$ ligand donates a lone pair to the metal centre. The crystal field splitting energy for this complex is sufficiently large that all six $d$-electrons of $\text{Co}^{3+}$ ($d^6$) occupy the lower $t_{2g}$ orbitals, making it a low-spin diamagnetic complex.

Overview

University-level inorganic chemistry notes covering coordination chemistry, organometallics, and materials science.

Topics Covered

• Coordination Chemistry: Ligands, geometry, crystal field theory, spectrochemical series
• Organometallic Chemistry: Metal-carbon bonds, catalysis, carbonyl complexes
• Materials Science: Solid-state structures, semiconductors, superconductors
• Bioinorganic Chemistry: Metalloenzymes, metal-based drugs

Prerequisites

• General chemistry (first-year university level)
• Physical chemistry (thermodynamics, quantum mechanics)
• Basic spectroscopy principles

How to Use These Notes

Start with the introductory sections to build foundational knowledge, then progress to more advanced topics. Each section includes worked examples and practice problems.

Navigation

Use the sidebar to browse topics, or start with the introductory pages linked from the sidebar.

Additional Resources

Each section includes:

• Detailed explanations of key concepts
• Worked examples with step-by-step solutions
• Practice problems with answers
• Common pitfalls and how to avoid them
• Connections to other areas of inorganic chemistry

Study Tips

1. Build a strong foundation: Ensure you understand the basic concepts before moving to advanced topics
2. Practice regularly: Inorganic chemistry requires active practice, not just reading
3. Use visual models: Molecular models help understand coordination geometry
4. Learn the spectrochemical series: Essential for predicting colour and magnetism
5. Connect theory to application: Relate concepts to catalysis and materials science