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Reference.org
Bis(diphenylphosphino)methane
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<p>1,1-Bis(diphenylphosphino)methane (dppm), is an <a href="/facts/Organophosphorus_compound/kNgIF93U">organophosphorus compound</a> with the formula CH2(PPh2)2. Dppm, a white, crystalline powder, is used in inorganic and organometallic chemistry as a ligand. It is more specifically a <a href="/facts/Chelating_ligand/4G79sXBB">chelating ligand</a> because it is a ligand that can bond to metals with two phosphorus donor atoms. The natural <a href="/facts/Bite_angle/tEFLuAJv">bite angle</a> is 73°. </p>