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.

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.

References in periodicals archive ?

The molar conductances of the coordination compounds were determined in DMSO with the help of a Toshniwal conductivity bridge (CL01-02A) and a dip type cell calibrated with KCl solutions.

Syntheses, characterization, and biological activities of metal complexes of N-(2-Carbamoylthienyl)-C-(3'-carboxy-2-hydroxyphenyl) Azetidin-2-one with some Di-, tetra-, and hexavalent metal ions

The organic skeleton of the respective coordination compounds were decomposed by the slow heating of ~0.1g of the latter, with conc.

Physicochemical, spectral, and biological studies of Mn(II), Cu(II), Cd(II), Zr[(OH).sub.2] (IV), and U[O.sub.2](VI) compounds with ligand containing thiazolidin-4-one moiety

Therefore, the effects of rhodium metal complexes towards this inflammatory mediator can be clearly attributed to the final structure (square planar and/or octahedral) of these coordination compounds.

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Factors such as nature of metallic ion and the force of reaction with the ligands in coordination compounds have effects on the temperature and pressure at which thermal decomposition takes place [17].

Metal Nanoparticles: Thermal Decomposition, Biomedicinal Applications to Cancer Treatment, and Future Perspectives

"Thermal Transformation of Coordination Compounds in Solid Phase", Leningrade, Leningrade Univ.

Thermal studies on mixed ligand oxo thiocyanato rhenium (V) complexes with 2-mercapto pyridine

Also, SciFinder's new version provides structure searches of the entire CAS substance collection or allows focus by substance classes, such as coordination compounds, mixtures, polymers, etc.

CAS releases its SciFinder 2004 Edition

In addition SciFinder 2004 provides structure searches of the entire CAS substance collection or allows focus by substance classes, such as coordination compounds, mixtures, polymers, etc.

CAS introduces SciFinder 2004

This ability allows these compounds to be used to make various polymerizable materials, including charge-transfer complexes and coordination compounds. Heterocyclic triaryl-diolefin ligands were synthesized using two major synthetic routes.

Triaryl diolefins as hosts for metals and organoiodies. (South Carolina Academy of Sciences Abstracts)

He further explores the use of palladium coordination compounds in asymmetric transformations.

Chemistry at the University of Calgary

Since it was recognized, the interest in the preparation of INH coordination compounds with transition metals and their screening against biological activities have been carried out [18-21].

Synthesis, Characterization and Anticancer Activity of Isonicotinylhydrazide Metal Complexes

Ag(I) coordination compounds with a variety of ligands having nitrogen, phosphorus, and/or sulfur donor atoms have large applications in medicinal and analytical chemistry [1, 2].

[beta]-Carboline Silver Compound Binding Studies with Human Serum Albumin: A Comprehensive Multispectroscopic Analysis and Molecular Modeling Study

Infrared and Raman Spectra of Inorganic and Coordination Compounds, sixth ed., John Wiley & Soons Inc.

Dimeric Self-assembling via Hydrogen Bonding and Emissive Behavior of a New Copper (I) Complex