Coordination compounds linkage

Figure 16.18 summarizes the types of isomerism found in coordination complexes. The two major classes of isomers are structural isomers, in which the atoms are connected to different partners, and stereoisomers, in which the atoms have the same partners but are arranged differently in space. Structural isomers of coordination compounds are subdivided into ionization, hydrate, linkage, and coordination isomers. 

COORDINATION COMPOUNDS. One of a number of types of complex compounds, usually derived by addition from simpler inorganic substances. Coordination compounds are essentially compounds to which atoms or groups have been added beyond the number possible on the basis of electrovalent linkages, or the usual covalent linkages, to which each of the two atoms linked donates one electron (o Form the duplet. The coordinate groups are linked to the atoms of the compound usually by coordinate valences, in which both the electrons in the bond are furnished by the linked atom of the coordinated group. The amines and complex cyanides are representative of coordination compounds. 

The metal-cycles, analogous by their linkage, exist in the coordination compound 616, obtained (3.53) on the basis of thiosemicarbazone of thiophene aldehyde [63] ... 

Different approaches have been developed for binding a metal or organo-metallic moiety to these dendrimer frameworks. In numerous coordination compounds, the dendrimer and the metal are linked through a dative metal-heteroatom bond [32], while in organometallic compounds the linkage between the metal and the dendritic framework is realized via a or n metal-carbon bonding [11]. 

It should be noted that there are organometallic compounds involving polyhapto ligands that contain linkages such as Sc— Te that are not found in coordination compounds. In addition, a number of recent reviews on the organometallic chemistry of the lanthanides include reference to scandium compounds. ... 

Two or more coordination compounds in which the donor atom of at least one of the ligands is different. Linkage isomers have different physical and chemical properties. Ligands that can form these isomers are CN-, SCN-, and N02-. 

Structural (constitutional) isomers (Applied to coordination compounds.) Isomers whose differences involve more than a single coordination sphere or else different donor atoms they include ionization isomers, hydrate isomers, coordination isomers, and linkage isomers. 

Selenium, bis(diethyldithiocarbamato)-stereochemistry, 60 Selenium, bis(dithiofurancarbamato)-stereochemistry, 60 Selenium(II) complexes bis(dithiochelate), 60 Selenocyanate complexes linkage isomers, 186 Selenonium ions, trifluoro-stereochemistry, 37 Self-exchange reactions, 333 electron transfer rate constants, 347-353, 366 rate constants calculation, 348 rate constants, 362 Semicarbazide, 1,4-diphenylthio-ruthenium determination, 546 Semi-glycinecresol red metallochromic indicator, 557 Semi-xylenol orange metallochromic indicator, 557 Seven-coordinate compounds stereochemistry, 69-83 Sidgwick, Nevil Vincent, 16 Silicon, tris(acetylacetone)-configuration, 195... 

Compound V/P/O Framework Structure Vanadium Coordination and Linkages Cell Parameters Space Group References... 

Linkage isomers Linkage isomers occur when a ligand species can attach to the metal atom in different orientations. For example, when thiocyanate (SCN ) bonds to a metal, in one isomer the metal can be linked through the nitrogen atom whereas in the other isomer it s linked though the sulfur atom. (The orientation of these links affects the name of the coordination compound, which we describe in the next section.)... 

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