Naslov
Impact of metal coordination on amide synthons in picolinamide complexes

Autori
Đaković, Marijana ; Popović, Zora

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

Izvornik
XXII Congress and General Assembly of the International Union of Crystallography, Madrid, August 22-30, 2011, Spain, Book of Abstracts, Acta Crystallographica A67 / Gutierrez-Puebla, Enrique ; Martinez-Ripoll ; Martin - Madrid : IUCr, 2011, C317-C318

Skup
XXII Congress and General Assembly of the International Union of Crystallography

Mjesto i datum
Madrid, Španjolska, 22.08.2011. - 30.08.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
hydrogen bonding ; amide supramolecular synthons ; crystal engineering

Sažetak
Due to the abundance of the amide functionality in biological systems, the structural chemistry of the amide moieties has received considerable attention. The supramolecular behaviour of the amide functionally in organic systems is well characterized. It has become clear that it is robust and reliable supramolecular connector. It links discrete organic molecules through supramolecular R22(8) synthons at high supramolecular synthetic yield. However, relatively little work has been done in constructing predictable architectures of coordination compounds. Picolinamide, having a carboxamide moiety in ortho position, distinctly to the other two of its isomers acts as chelating ligand, mostly through N, O donor set of atoms, thus imposing some restrictions on accessibility of the amide group for participation in hydrogen bonding. The search of the CSD, confined to octahedral chelating-N, O dipicolinamide complexes, revealed that tetrameric motif [R24(8)] is more commonly found than the dimeric one [R22(8)]. Particularly, the dimer is observed in only one, while tetrameric motifs involving different accepting atoms, mostly halogens, are observed in seven of seventeen structures. Therefore, it would be of interest to determine the main factors influencing the outcome of supramolecular synthesis.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA