Coordination Compound
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coordination compound
[kō‚ȯrd·ən′ā·shən ‚käm‚pau̇nd] (chemistry)
A compound with a central atom or ion and a group of ions or molecules surrounding it. Also known as coordinated complex; Werner complex.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Coordination Compound
any of a group of compounds of complex composition. In these compounds, molecules of water, ammonium, acids, and salts are added to the complex ion. Examples of coordination compounds are crystal hydrates of the [Co(NH3)6]2(SO4)3·5H2O, type, various ammoniates, such as Cu[PtCl6]·18NH3, and various salts, such as (NH4)3[RuCl6]NH4NO3. Possessing an electrostatic field, the complex ion attracts dipolar molecules, forming in solution a second or even a third coordination sphere. The formation of coordination compounds can involve oxidation-reduction reactions, Van der Waals forces, and hydrogen bonds. Coordinated molecules or ions, for example, SCN– in the compound [(NH3)2PtSCNSCNAg]NO3, can serve as secondary centers of addition.
REFERENCES
Grinberg, A. A. Vvedenie v khimiiu kompleksnykh soedinenii, 2nd ed. Moscow-Leningrad, 1951.Khimiia koordinatsionnykh soedinenii. Edited by J. Bailar and D. Busch. Moscow, 1960. (Translated from English.)
Nekrasov, B. V. Osnovy obshchei khimii, vol. 3. Moscow, 1970.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.