Search results
Results from the WOW.Com Content Network
Bipyridines are a family of organic compounds with the formula (C 5 H 4 N) 2, consisting of two pyridyl (C 5 H 4 N) rings. Pyridine is an aromatic nitrogen-containing heterocycle. The bipyridines are all colourless solids, which are soluble in organic solvents and slightly soluble in water. Bipyridines, especially the 4,4' isomer, are mainly of ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
Bahasa Indonesia; Italiano; Magyar ... Unsymmetrically substituted 2,2'-bipyridines can be prepared by cross coupling reaction of 2 ... Wikipedia® is a registered ...
Desk; c. 1765; mahogany, chestnut and tulip poplar; 87.3 x 92.7 x 52.1 cm; Metropolitan Museum of Art (New York City) A desk or bureau is a piece of furniture with a flat table-style work surface used in a school, office, home or the like for academic, professional or domestic activities such as reading, writing, or using equipment such as a computer.
4,4′-Bipyridine was first obtained in 1868 by the Scottish chemist Thomas Anderson via heating pyridine with sodium metal. [1] However, Anderson's empirical formula for 4,4′-bipyridine was incorrect. [2]
The bis-triazinyl bipyridines (BTBPs) are a class of chemical compounds which are tetradentate ligands similar in shape to quaterpyridine. The BTBPs are made by the reaction of hydrazine and a 1,2-diketone (such as hexane-3,4-dione ) with 6,6'-di cyano -2,2'-bipyridine.
العربية; تۆرکجه; Беларуская; Български; Català; Čeština; Deutsch; Ελληνικά; Español; Esperanto; Euskara; فارسی; Gaeilge
Many ring-substituted variants of bipy have been described, especially dimethyl-2,2'-bipyridines. [6] [7] Alkyl substituents enhance the solubility of the complexes in organic solvents. 6,6'-Substituents tend to protect the metal center. [8] The related N,N-heterocyclic ligand phenanthroline forms similar complexes.