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2,2′-Bipyridine
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<p>2,2′-Bipyridine (bipy or bpy, pronounced /ˈbɪpiː/) is an <a href="/facts/Organic_compound/gqCNaN45">organic compound</a> with the formula (<a href="/facts/Carbon/ukrgQexo">C</a>5<a href="/facts/Hydrogen/BoYHjl0J">H</a>4<a href="/facts/Nitrogen/Nf1QpGDz">N</a>)2. This colorless solid is an important <a href="/facts/Isomer/PXlvDVdg">isomer</a> of the <a href="/facts/Bipyridine/C2pcpnlb">bipyridine</a> family. It is a <a href="/facts/Bidentate/hJF1lAJz">bidentate</a> <a href="/facts/Chelation/4G79sXBB">chelating</a> <a href="/facts/Ligand/6etB3qeW">ligand</a>, forming complexes with many <a href="/facts/Transition_metal/0slGWoLQ">transition metals</a>. <a href="/facts/Ruthenium/uzCm4ufn">Ruthenium</a> and <a href="/facts/Platinum/qJC6lQf7">platinum</a> complexes of bipy exhibit intense <a href="/facts/Luminescence/1QkIWyUj">luminescence</a>. </p>