ChemInform Abstract: ORGANOSILBER‐CHEMIE

Abstract

Der Artikel gibt einen Überblick über Alkyl‐, Aryl‐, Alkenyl‐, Alkinylsilber= Verbindungen, n‐Koordinationskomplexe von Silberionen rpit ungesättigten Kohlenwasserstoffen (Alken‐, Alkin‐ und Aren‐Silber‐Koordinationskomplexe) und w‐Koordinationskomplexe von Silberionen mit ungesättigten, Heteroatome enthaltenden Systemen.

Interlamellar Metal Complexes in Layer Silicates III Silver(I)—Arene Complexes in Smectites

“…Benzene forms complexes with silver salts in proportions of I : 1, 3 : 2, or 2 : 1 depending upon the nature of the anion (Beverwijk et al, 1970). The 2:1 proportion found in the Ag(I)-montmorillonite thus falls within this group of silver salts.…”

“…This obviously points to a 2:1 proportion of benzene to Ag(I). A number of benzene-Ag(I) complexes of that ratio have been reported in the literature (Beverwijk et al, 1970).…”

Effect of Fixed Charge Groups and Counter Ions on the Transport Phenomena of Paraffin and Olefin across Anhydrous Negatively Charged Membranes

“…In 1938, Winstein et al published the first paper on the bonding of an olefin-Ag ϩ complex (40). Since then, many experiments have been carried out to investigate the interaction between olefin and transition metal ions.…”

“…The interaction between olefins and alkali metal ions, such as Na ϩ , comes from the coulombic interaction (43). The interaction between an olefin and a transition metal ion, such as Ag ϩ , comes from the orbital interaction, consisting of electron migration from the occupied -orbital of the olefin to the unoccupied s-orbital of the transition metal and electron migration from the occupied d-orbital of the transition metal to unoccupied *-orbital of the olefin (40,42). Therefore, the affinity between the olefin and the transition metal is generally strong.…”

Hydrodynamic Surface Flow and the Swelling Effect of C2and C4Alkenes through Anhydrous Ag+-Doped Perfluorocarbon Type Ion-Exchange Membranes

“…These phenomena were always mainly ascribed to the enhanced solubility or facilitated transport of alkenes because Ag ϩ ions existed in the membrane. The research on the affinity between silver ion and alkenes can be traced back to 1938, when Winstein and his coworkers published their first paper on an alkene-silver coordination complex (11). Now it is commonly understood that the interaction between the alkene and the silver ion can be described in the following way: a -type bond, as a result of the donation of -electrons from the occupied 2p bonding orbital of the olefinic system into the vacant 5s orbital of the silver ion, and a -type bond, as a result of back-donation of d-electrons from occupied 4d orbitals of the silver ion into the unoccupied * Ϫ 2p antibonding orbitals of the olefinic system (11,12).…”