Naslov
The Effect of C– H… N Interactions on Crystal Structure and Thermal Properties of Two Novel Diamine Schiff Bases Derived from Terephthaldialdehyde

Autori
Stilinović, Vladimir ; Cinčić, Dominik ; Kaitner, Branko

Izvornik
Acta Chimica Slovenica (1318-0207) 55 (2008), 4; 874-879

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Schiff base; terephthaldialdehyde; C– H… N interaction; X-ray structure analysis; thermal analysis

Sažetak
Two novel potential bridging ligands derived from terephtaldialdehyde, namely 1, 4-bis((pyridine-3-ylimino)methyl)benzene (1) and 1, 4-bis-((1-benzylpiperidin-4-ylimino)methyl)benzene (2), were prepared by the Schiff base condensation. They were characterised by means of IR spectroscopy, thermal analysis and also by powder and single crystal X-ray diffraction. The molecules of 1 form 1D chains by intermolecular C– H… N interactions. The molecular conformation of 2, governed by intramolecular C– H… N interactions, does not permit formation of intermolecular interactions analogous to those in 1. As a consequence, 2 has a markedly lower melting point and fusion enthalpy than 1, although its molecular weight is almost double that of 1.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA