Dichlorobis(ethylenediamine)nickel(II)

<p>Dichlorobis(ethylenediamine)nickel(II) is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula NiCl2(en)2, where en = <a href="/facts/Ethylenediamine/VDX8VfFv">ethylenediamine</a>. The formula is deceptive: the compound is the chloride salt of the coordination complex [Ni2Cl2(en)4]2+. This blue solid is soluble in water and some polar organic solvents.  It is prepared by <a href="/facts/Ligand/6etB3qeW">ligand</a> <a href="/facts/Redistribution_reaction/pdbYLmRB">redistribution</a> from [Ni(en)3]Cl2 · 2 <a href="/facts/Water_of_crystallization/sbaKJNJX">H2O</a> and hydrated <a href="/facts/Nickel_chloride/KWLuUr0V">nickel chloride</a>:
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2 [Ni(en)3]Cl2  +  NiCl2   →   3 NiCl2(en)2
<p>The rapid ligand redistribution is characteristic of the kinetic lability of octahedral nickel(II) complexes.  In contrast with the lability of [Ni(en)3]Cl2+ is the inertness of the isostructural <a href="/facts/Tris(ethylenediamine)cobalt(III)_chloride/CfN8EvnK">tris(ethylenediamine)cobalt(III) cation</a>.
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Dichlorobis(ethylenediamine)nickel(II) open-in-new

Dichlorobis(ethylenediamine)nickel(II)