Naslov
Crystal Structures of Three Bis(L- aminoacidato)Copper(II) Complexes: Polymeric Networks Based on Hydrogen Bonds and Intermolecular Cu...O Bonds

Autori
Judaš, Nenad

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts. Annual Meeting of the American Crystallographic Association, Orlando, 2005. / - Orlando (FL) : American Crystalographic Association, 2005

Skup
Annual Meeting of the American Crystallographic Association

Mjesto i datum
Orlando (FL), Sjedinjene Američke Države, 28.05.2005. - 02.06.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
amino acids ; copper(II) complexes

Sažetak
Crystal and molecular structures of trans- [Cu(Gly)2](H2O), trans-Cu(Val)2 and trans-Cu(Trp)2 complexes were determined. Two procedures were employed to obtain single crystals: crystallization from saturated solutions in the presence of excess solid ligand, and conversion of a bis(β -diketonate)copper(II) complex into a bis(L-aminoacidato)copper(II) complex via a difference in solubility and kinetic stability in whiskey medium. Crystal structures of all compounds are dominated by N-H...O hydrogen bonds and intermolecular Cu...O bonds. The structure of trans-[Cu(Gly)2](H2O) may be described in terms of polymeric layers of complex molecules. The interlinking of molecules in each layer can be rationalized to tetramers stabilized by intra- and intermolecular N-H...O hydrogen bonds. In case of trans-Cu(Val)2, the structure contains polymeric chains made up of complex dimers. Finally, trans- Cu(Trp)2 displays intermolecular hydrogen bonding of N-H...π type despite alternative hydrogen bond accepting sites in the crystal, anticipated to get more readily involved in hydrogen bonding.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA