Cis isomers are a type of stereoisomer where similar or identical ligands are positioned on the same side of a coordination compound's central metal atom. This arrangement can affect the compound's physical and chemical properties, including solubility, reactivity, and color. Understanding cis isomers is crucial for grasping the broader concepts of isomerism in coordination chemistry, as they represent one of the key ways in which complexes can differ structurally yet still share the same molecular formula.
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