2-Aminopyrimidinium 4-hydroxypyridinium-2,6-dicarboxylate monohydrate

Abstract

In the crystal structure of the title compound, C4H6N3 +·C7H4NO5 −·H2O, inter­molecular N—H⋯N, N—H⋯O and O—H⋯O hydrogen bonds link the cations and anions into almost planar sheets parallel to (102). These hydrogen-bonded sheets are packed into the crystal with the formation of centrosymmetric voids of 68 Å3, which are filled by the water mol­ecules, each of which is disordered over four positions.

Neutral and Ionic Form of (Benzylthio)Acetic Acid in Novel Aminopyrimidine Based Multi-Component Crystalline Phases

“…The greatest structural diversity of 2-A-4,6-DMP -based supramolecular associations (Figure 2B) is demonstrated in relation to p-xylylene-bis(thioacetic) acid resulting in orthorhombic Cmca (CSD refcode: BOQNUS [21]) and monoclinic P21/c (CSD refcode: BOQNIG [21]) co-crystals, as well as monoclinic P21/c (CSD refcode: BOQNOM [21] The supramolecular conglomerates fabricated from 2-AP and carboxylic co-partners generate two-or three-component molecular crystals belonging to almost all defined subclasses of SOFs [10], except the salt co-crystal solvate (Figure 2B). The 2-AP generally forms supramolecular adducts without any solvent as evidenced by only six reported acid:base crystalline solids containing solvent residues in the form of water (CSD refcode: NAXSIQ [11], PUDGRUF [12]/PUDGRUF01 [13], SUYQAF [14], and VEVNEQ [15]), ethanol (CSD refcode: AJECIB [16]), or nitrobenzene (CSD refcode: KAH-MOV [17]). Interestingly, the supramolecular associations proceeding between 2-AP and benzoic acid resulted in the production of three co-crystal polymorphs described by Pnma (CSD refcode: NUKWEW [18] and NUKWEW01 [18]) and P2 1 /n (NUKWOG [18]) symmetry.…”

Syntheses, crystal, molecular structures, and solution studies of Cu(II), Co(II), and Zn(II) coordination compounds containing pyridine-2,6-dicarboxylic acid and 1,4-pyrazine-2,3-dicarboxylic acid: comparative computational studies of Cu(II) and Zn(II) complexes

“…Functional groups are widely employed to construct crystalline edifice [14,15]. In this work, a systematic study was employed for proton-transfer process from carboxylic acids to amines [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. PydcH 2 and pyzdcH 2 were used as ligands in designing coordination compounds with various dimensionalities and inducing selfassembly processes [30][31][32][33][34][35][36][37][38][39][40][41][42].…”

“…As valuable characters are: (a) heterocyclic acid with two carboxyl groups, (b) form hydrogen bonding and aromatic-aromatic stacking interactions, (c) contain N-or O-donor atoms, these leads to new structures with diverse dimensional. Previously, the syntheses and structural characterization of some coordination compounds via proton-transfer methodology were described [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Herein, the syntheses and potentiometric studies of three new Cu(II), Co(II), and Zn(II) coordination compounds involving abovementioned dicarboxylic acids as proton donors, and Acr and 2a-4mpy heterocyclic amines as proton acceptors are reported.…”

Synthesis and crystal structure of trans-[Ni(pyzdcH)M₂(H₂O) ₂] based on pyrazine-2,3-dicarboxylic acid

“…So, organic ligands and aromatic molecules have been studied extensively in the crystal structure to assemble supramolecular network organized by coordination bonds, hydrogen bonds and π-π stacking interaction [5]. As one of these ligands, the dicarboxylate ligand, pyzdcH 2 has drawn extensive attentions [6][7][8][9][10][11][12][13][14][15]. Metal pyrazine dicarboxylate complexes can construct versatile structural motifs, which generate various supramolecular architectures with interesting properties.…”

“…Metal pyrazine dicarboxylate complexes can construct versatile structural motifs, which generate various supramolecular architectures with interesting properties. After our previous works on synthesizing coordination compounds via proton transfer mechanism [10][11][12][13][14][15] including copper, manganese, cobalt and zinc atom herein, we planned the reaction between pyzdcH 2 , pipyrazine, and nickel(II) choloride in order to provide a new proton transfer compound.…”