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2,2'-Biquinoline
2,2′-Biquinoline is an organic compound with the formula (C9H6N)2. It is one of several biquinolines. It is prepared by reductive coupling of 2-chloroquinoline. It is a colorimetric indicator for organolithium compounds. Ligand properties 2,2′-Biquinoline is a bidentate ligand. Unlike the related complexes of 2,2′-bipyridine 2,2′-Bipyridine (bipy or bpy, pronounced ) is an organic compound with the formula . This colorless solid is an important isomer of the bipyridine family. It is a bidentate chelation, chelating ligand, forming complexes with many transition meta ..., the metal does not typically occupy the plane of the biquinoline. References {{DEFAULTSORT:Biquinoline, 2, 2'- Quinolines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,2′-Bipyridine
2,2′-Bipyridine (bipy or bpy, pronounced ) is an organic compound with the formula . This colorless solid is an important isomer of the bipyridine family. It is a bidentate chelation, chelating ligand, forming complexes with many transition metals. Ruthenium and platinum complexes of bipy exhibit intense luminescence. Preparation, structure, and general properties 2,2'-Bipyridine was first prepared by decarboxylation of divalent metal derivatives of Pyridine-2-carboxylic acid, pyridine-2-carboxylate: It is prepared by the dehydrogenation of pyridine using Raney nickel: Substituted 2,2'-bipyridines Unsymmetrically substituted 2,2'-bipyridines can be prepared by cross coupling reaction of 2-pyridyl and substituted pyridyl reagents. Structure Although 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. Monoprotonated bipyrid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-Chloroquinoline
2-Chloroquinoline is an organic compound with the formula ClC9H6N. It is one of several isomeric chloro derivatives of the bicyclic heterocycle called quinoline. A white solid, 2-chloroquinoline can be prepared from vinylaniline and phosgene. It is a precursor to 2,2'-biquinoline 2,2′-Biquinoline is an organic compound with the formula (C9H6N)2. It is one of several biquinolines. It is prepared by reductive coupling of 2-chloroquinoline. It is a colorimetric indicator for organolithium compounds. Ligand properties .... References {{DEFAULTSORT:Chloroquinoline, 2- Quinolines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-containing compounds such as alkanes (e.g. methane ) and its derivatives are universally considered organic, but many others are sometimes considered inorganic, such as certain compounds of carbon with nitrogen and oxygen (e.g. cyanide ion , hydrogen cyanide , chloroformic acid , carbon dioxide , and carbonate ion ). Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, and even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quinoline
Quinoline is a heterocyclic aromatic organic compound with the chemical formula C9H7N. It is a colorless hygroscopic liquid with a strong odor. Aged samples, especially if exposed to light, become yellow and later brown. Quinoline is only slightly soluble in cold water but dissolves readily in hot water and most organic solvents. Quinoline itself has few applications, but many of its derivatives are useful in diverse applications. A prominent example is quinine, an alkaloid found in plants. Over 200 biologically active quinoline and quinazoline alkaloids are identified. 4-Hydroxy-2-alkylquinolines (HAQs) are involved in antibiotic resistance. Occurrence and isolation Quinoline was first extracted from coal tar in 1834 by German chemist Friedlieb Ferdinand Runge; he called quinoline ''leukol'' ("white oil" in Greek). Coal tar remains the principal source of commercial quinoline. In 1842, French chemist Charles Gerhardt obtained a compound by dry distilling quinine, st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organolithium Compound
In organometallic chemistry, organolithium reagents are chemical compounds that contain carbon–lithium (C–Li) bonds. These reagents are important in organic synthesis, and are frequently used to transfer the organic group or the lithium atom to the substrates in synthetic steps, through nucleophilic addition or simple deprotonation. Organolithium reagents are used in industry as an initiator for anionic polymerization, which leads to the production of various elastomers. They have also been applied in asymmetric synthesis in the pharmaceutical industry. Due to the large difference in electronegativity between the carbon atom and the lithium atom, the C−Li bond is highly ionic. Owing to the polar nature of the C−Li bond, organolithium reagents are good nucleophiles and strong bases. For laboratory organic synthesis, many organolithium reagents are commercially available in solution form. These reagents are highly reactive, and are sometimes pyrophoric. History and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bidentate Ligand
In coordination chemistry, a ligand is an ion or molecule with a functional group that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's electron pairs, often through Lewis bases. The nature of metal–ligand bonding can range from covalent to ionic. Furthermore, the metal–ligand bond order can range from one to three. Ligands are viewed as Lewis bases, although rare cases are known to involve Lewis acidic "ligands". Metals and metalloids are bound to ligands in almost all circumstances, although gaseous "naked" metal ions can be generated in a high vacuum. Ligands in a complex dictate the reactivity of the central atom, including ligand substitution rates, the reactivity of the ligands themselves, and redox. Ligand selection requires critical consideration in many practical areas, including bioinorganic and medicinal chemistry, homogeneous catalysis, and environmental ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
