Coordination Compounds
Maharashtra Board · Class 12 · Chemistry
Summary of Coordination Compounds for Maharashtra Board Class 12 Chemistry. Key concepts, important points, and chapter overview.
Overview
Coordination compounds are fascinating chemical species where a central metal atom or ion is surrounded by molecules or ions called ligands. These compounds play crucial roles in biological systems, industrial processes, and medical applications. Understanding their structure, bonding, nomenclature,
Key Concepts
The coordination sphere consists of
The coordination sphere consists of the central metal ion and directly bonded ligands, enclosed in square brackets. For example, in K₄[Fe(CN)₆], the c
Ligands are electron
Ligands are electron-pair donors that coordinate to the central metal ion. Monodentate ligands (Cl⁻, NH₃, H₂O) have one donor atom, while polydentate
Coordination number equals the number
Coordination number equals the number of ligand donor atoms directly attached to the central metal ion. For [Co(NH₃)₄Cl₂]⁺, C.N. = 6. Oxidation state
Werner proposed that metals have primary
Werner proposed that metals have primary valencies (satisfied by anions, ionizable) and secondary valencies (satisfied by ligands, non-ionizable). For
Key rules
Key rules: (1) Ligands before metal, (2) Anionic ligands end in '-o' (Cl⁻ → chloro) or '-ato' (SO₄²⁻ → sulfato), (3) Use prefixes di-, tri-, tetra- fo
Learning Objectives
- Understand the basic concepts of coordination compounds and their components
- Learn IUPAC nomenclature rules for coordination compounds
- Classify ligands based on their donor atoms and denticity
- Apply Werner's theory to explain the structure of coordination compounds
- Identify different types of isomerism in coordination compounds
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