858512-05-7Relevant articles and documents
In situ synthesis of an imidazolate-4-amide-5-imidate ligand and formation of a microporous zinc-organic framework with H2-and CO 2-Storage Ability
Debatin, Franziska,Thomas, Arne,Kelling, Alexandra,Hedin, Niklas,Bacsik, Zoltan,Senkovska, Irena,Kaskel, Stefan,Junginger, Matthias,Mueller, Holger,Schilde, Uwe,Jaeger, Christian,Friedrich, Alwin,Holdt, Hans-Juergen
, p. 1258 - 1262 (2010)
"(Figure Presented)" Narrow channels with polar walls are the structural and functional features responsible for the high capacity of a zinc-organic framework based on an imidazolate-amide-imidate ligand for the uptake of H2 and CO2 (see structure: orange Zn, blue N, red O, dark gray C, light gray H). The rigid and stable chelating ligand was synthesized in situ by partial hydrolysis of a dicyanoimidazole compound.
Novel 2H-1,2,3-Triazole sodium complex from N-[2-amino-1,2-dicyanovinyl]alkanamides
AL-Azmi, Amal,George, Paulson,El-Dusouqui, Osman M.E.
, p. 2183 - 2201 (2008/09/17)
Diazotization at 0 °C of N-[2-amino-1,2-dicyanovinyl]ethanamide 2a or propanamide 2b prepared from diaminomaleonitrile (DAMN) 1 using aqueous acetic acid and NaNO2 solution furnished sodium complex 3. The X-ray structure of the complex 3 showed that it is a 1:1 mixture of the neutral 2H-triazole heterocycle 4ii and its anion deprotonated at the central (N) atom of the ring, together with a sodium counter ion and two coordinated water molecules. However, when the diazotization reaction was carried out in the presence of aqueous HCl, the product was 5-cyano-2H-[1,2,3]triazole-4-carboxylic acid amide monohydrate 4ii. Diazotization of DAMN 1 using aqueous HCl furnished 1H-1,2,3-triazole-4,5-dicarbonitrile 5, whereas with acetic acid there was no reaction, and hence no route analogous to that leading to complex 3. The structure of both complex 3 and the triazole monohydrate 4ii were solved using X-ray crystallography, and the compounds under study were fully characterized using spectroscopic techniques.
