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Carbonyl group
Encyclopedia entry from: The Gale Encyclopedia of Science
Carbonyl group A carbonyl group in chemistry is a group of atoms that consists of a carbon...to two other atoms. The simplest type of molecule that contains a carbonyl group is a ketone. Other types of molecules that contain carbonyl...
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carbonyl group
Book article from: The Columbia Encyclopedia, Sixth Edition
carbonyl group , in chemistry, functional group...single bonds or one double bond. If the carbonyl group is joined only to alkyl groups or...electron-rich; the carbon atom of the carbonyl group thus becomes electron-deficient...
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Aldehydes
Encyclopedia entry from: The Gale Encyclopedia of Science
...organic chemical compounds that contain a carbonyl group (in which a carbon atom is double...carbon (the central carbon atom in the carbonyl group). Aldehydes are similar to ketones, which also contain a carbonyl group. In the aldehydes, however...
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Ludwig Mond
Book article from: The Columbia Encyclopedia, Sixth Edition
...outstanding discovery of his was nickel carbonyl, a gas formed from carbon monoxide and...extracting nickel from its ores by use of this carbonyl. In the process, carbon monoxide passing...containing nickel produces the volatile nickel carbonyl; this is decomposed to yield metallic...
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Ester
Encyclopedia entry from: The Gale Encyclopedia of Science
...central carbon atom that has two bonds to an oxygen atom (the carbonyl group), C=O, a single bond to another carbon atom represented...central carbon atom that has two bonds to an oxygen atom (the carbonyl group), C=O, a bond to a carbon atom connected to three...
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Carboxyl group
Encyclopedia entry from: The Gale Encyclopedia of Science
...oxygen atoms). The name carboxyl is actually a combination of the words carbonyl and hydroxyl, since the carboxyl group itself can be considered as a combination of carbonyl (CO) and hydroxyl (OH) groups. Carboxyl groups are reactive. They...
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ketone
Book article from: The Columbia Encyclopedia, Sixth Edition
ketone , any of a class of organic compounds that contain the carbonyl group , C[symbol]O, and in which the carbonyl group is bonded only to carbon atoms. The general formula for a ketone is RCOR&prime...
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carboxyl group
Book article from: The Columbia Encyclopedia, Sixth Edition
...group. A fourth type involves the loss of carbon dioxide (decarboxylation). The second and third types are similar to reactions of the carbonyl group ; the carboxyl group may be thought of as a carbonyl group joined to a hydroxyl group.
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aldehyde
Book article from: The Columbia Encyclopedia, Sixth Edition
...New Lat. dehydrogenatus =dehydrogenated], any of a class of organic compounds that contain the carbonyl group , and in which the carbonyl group is bonded to at least one hydrogen; the general formula for an aldehyde is RCHO, where R is...
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Emil Fischer
Encyclopedia entry from: Encyclopedia of World Biography
...and isolating sugars. Through the use of phenyl hydrazine and its derivatives, he discovered the presence in sugars of the carbonyl group (=CO). By 1884 he was able to produce crystalline derivatives with various sugars; hitherto, these derivatives...
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