2,6 Di­amino 4 chloro­pyrimidinium 4 carb­­oxy­butano­ate

In this crystal structure, the N4-amino group and protonated N3 atom of the 5FC + cation interact with atoms O3 and O9 of the picrate anion through three-centre N—H O hydrogen

In the crystal structure, the carboxylate group of the 3-hy- droxypicolinate anion (O3 and O4) interacts with the protonated N3 atom and the 4-amino group of the 5-fluoro-

amino N atom of one molecule forms a hydrogen bond to the 1-N atom of an adjacent pyrimidyl ring, generating a hydrogen-bonded dimer..

The cations are linked to adjacent anions by N—H O hydrogen bonds formed between the protonated amine group of the dicyclohexylaminium cation and both carboxylate atoms of the Boc-

We report here the structure of the perchlorate salt, (I), of the protonated compound. , 1967), the amine N atom is protonated, while the pyridyl N atoms are hydrogen bonded at

In the cation, the azomethine N atom is protonated and donates hydrogen bonds to the phenolate O atom and to the tertiary N atom of the piperazine ring.. In the crystal, two Schiff

The hydrogen atom The hydrogen atom bonded to the bonded to the protonated oxygen protonated oxygen atom, donates an atom, donates an electron pair to the electron pair to the

The crystal structure of 2A6MPHG is formed by 2-amino-6-methyl pyridinium cation and hydrogen glutarate anion connected by hydrogen bonds.. The ORTEP (Fig.2a) reveals that the