Naslov
Supramolecular Architectures via Halogen Bonds In Halopyridine Complexes of Cu(II)

Autori
Đaković, Marijana ; Popović, Zora

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

Izvornik
Categorizing Halogen Bonding and other Noncovalent Interactions Involving Halogen Atoms, Book of Abstracts / Metrangolo, Pierangelo ; Resnati, Giuseppe - , 2011, 56-56

Skup
Categorizing Halogen Bonding and other Noncovalent Interactions Involving Halogen Atoms, IUCr Satellite Workshop

Mjesto i datum
Sigüenza, Španjolska, 20.08.2011. - 21.08.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
halogen bonding; copper(II) complexes; crystal structure

Sažetak
Interactions between covalently bound halogen atoms (X) and Lewis bases (D) are know as halogen bonds (XB) [1]. The analogy with hydrogen bonding (HB) is withdrawn for several reasons. Both interactions are directional and essentially electrostatic in character, and in both of these hydrogen and halogen atoms are acceptors of electron density. But, while hydrogen bonds have been extensively studied so far, halogen bonding constitutes rapidly growing area. Furthermore, while in HBs hydrogen atoms perform only one role (functioning as Lewis acid), halogen atoms in XBs apart form only accepting the electron density could act as electron donor as well. The origin of this dual halogen function is in highly anisotropic electron density around the halogen nucleus known as 'polar flattening', which has its minimum along extended C—X bond axis and its maximum perpendicular to that bond [2]. The preferences for the two distinct geometries involving halogen atoms, namely the interaction in the line of D—X bond and the interaction perpendicular to that bond emerge consequently [3]. Having in mind similarities and differences between XB and HB, there arouse the question whether the graph-set notation accepted in describing HB synthons could be also used for describing halogen bonding motifs in supramolecular assemblies

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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