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<p>So called "weak field ligands" give rise to small ?<sub>o</sub> and <a href="page.php?w=Absorbance">absorb</a> light at longer <a href="page.php?w=wavelength">wavelength</a>s.</p>

<p><big> Reactions </big></p>
<p>Given that a virtually uncountable variety of octahedral complexes exist, it is not surprising that a wide variety of reactions have been described. These reactions can be classified as follows:</p>

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* Ligand substitution reactions (via a variety of mechanisms)<br/>
* Ligand addition reactions, including among many, protonation<br/>
* <a href="page.php?w=Redox_reactions">Redox reactions</a></p><p>
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