Английская Википедия:Dimethyl-2,2'-bipyridine

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Файл:4,4'Me2bipy.svg
Structure of 4,4'-dimethyl-2,2'-bipyridine.

Dimethyl-2,2'-bipyridine can refer to many isomers of 2,2'-bipyridine containing two methyl substituents. All have the formula Шаблон:Chem2, but the most common are symmetrical derivatives Шаблон:Chem2 listed below. These compounds are used as ligands in coordination chemistry and homogeneous catalysis. They are white or colorless. Most are solids except the 3,3' isomer which is a liquid.

Caption text
compound Registry number melting/boilingpoint (°C)
4,4'-dimethyl-2,2'-bipyridine 1134-35-6 171-172
5,5'-dimethyl-2,2'-bipyridine 1762-34-1 114.5-115
6,6'-dimethyl-2,2'-bipyridine 4411-80-7 89.5-90.5
3,3'-dimethyl-2,2'-bipyridine 1762-32-9 293-298[1]

References