Coordination chemistry is a fundamental area of inorganic chemistry focusing on compounds formed between central metal atoms and surrounding ligands. Potassium tris(oxalato)ferrate(III) is a classic example of a coordination complex where iron acts as the central metal ion and the oxalate ion ($C_2O_4^2-$) acts as a bidentate ligand.

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Inorganic Experiments , edited by J. Derek Woollins, is a comprehensive laboratory manual featuring nearly 100 experiments spanning introductory to advanced levels. The Third Revised Edition emphasizes modern research techniques, green chemistry, and includes contributions from international experts. More information is available on the Wiley website. Inorganic Experiments, 3rd Revised Edition - Wiley