Naslov
Low-temperature NMR investigation of aliphatic C- nitroso compounds

Autori
Bibulić, Petar ; Biljan, Ivana ; Vančik, Hrvoj

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

Skup
European-Winter School on Physical Organic Chemistry

Mjesto i datum
Bressanone, Italija, 31.01.2016. - 05.02.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
NMR spectroscopy; nitroso; dimerization; low-temperature; equilibrium

Sažetak
C-nitroso compounds are known for having three different forms. While monomers are predominant in solution, dimers are present in the solid-state, or solutions at low temperatures.1 There are two possible dimer forms: Z- and E-, the latter being more stable in the majority of cases. Aliphatic nitroso compounds which have a hydrogen at the -C atom can also undergo fast hydrogen shift to yield a more stable oxime in an irreversible reaction.2 This process is accelerated in both basic and acidic media as well as protic solvents. Recently, the topochemical influence on dimer formation for aromatic nitroso compounds in solid-state was ilustrated.3 In this report, we investigate how molecular packing affects the monomer/dimer equilibrium in solution. Molecular packing can be changed by varying chain length of non-branched aliphatic nitroso compounds (n = 6 – 16) or by introducing a different degree of branching into the aliphatic chain. Aliphatic nitroso compounds of appropriate chain length could possibly be used in micellar solutions, forming a weak topochemical environment in condensed phase.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA