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|Section2= |Section3= |Section7= |Section8= }} 2,2'-Bipyridine (bipy or bpy (pronounced "bip-ee")) is an organic compound with the formula (C10H8N2). This colorless solid is an important isomer of the bipyridine family. It is a bidentate chelating ligand, forming complexes with many transition metals. Ruthenium complex and platinum complexes of bipy exhibit intense luminescence, which may have practical applications. ==Preparation and general properties== It is prepared by the dehydrogenation of pyridine using Raney nickel: :2C5H5N → (C5H4N)2 + H2 Although uncoordinated bipyridine is often drawn with its nitrogen atoms in ''cis'' conformation, the lowest energy conformation both in solid state and in solution is in fact coplanar, with nitrogen atoms in ''trans'' position. Protonated bipyridine adopts a cis conformation. Upon binding to metal ions the related N,N-heterocyclic ligand phenanthroline does not incur an enthalpic and entropic penalty, and thus its complexes tend to be more stable. Reflecting the popularity of this ligand design, many substituted variants of bipy have been described. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「2,2'-Bipyridine」の詳細全文を読む スポンサード リンク
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