172 research outputs found
4-(Carboxymethyl)anilinium chloride
In the crystal of the title compound, C8H10NO2
+·Cl−, alternating layers of hydrophobic and hydrophilic zones stack along the c axis. The chloride anions are sandwiched between the 4-(carboxymethyl)anilinium layers, forming intermolecular O—H⋯Cl and N—H⋯Cl hydrogen bonds with the ammonium and carboxyl groups of the cations. In addition, intermolecular N—H⋯O and weak C—H⋯O and C—H⋯Cl hydrogen bonds help stabilize the crystal structure
2-Amino-3-carboxypyridinium nitrate
In the crystal structure of the title compound, C6H7N2O2
+·NO3
−, the cations are linked via C—H⋯O hydrogen bonds, forming infinite chains running along the b axis. These chains are further linked through N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds to the nitrate anions, forming well-separated infinite planar layers parallel to (001)
Bis(3-hydroxymethylanilinium) hexachloridostannate(IV)
In the title compound, (C7H10NO)2[SnCl6], the SnIV atom, located on an inversion center, exists in an octahedral coordination environment. The crystal structure exhibits alternating organic and inorganic layers parallel to (01). The cations and anions are linked via intermolecular N—H⋯O, N—H⋯Cl and O—H⋯Cl hydrogen bonds. Additional stabilization is provided by π–π stacking interactions between the benzene rings of the cations [centroid–centroid distances = 3.6962 (15) and 3.9340 (15) Å]
Tris(2-{[2-(4-methoxyphenyl)ethyl]iminomethyl}phenolato-κ2 N,O 1)cobalt(III)
In the title compound, [Co(C16H16NO2)3], the CoIII atom is six-coordinated in an irregular octahedral geometry by three N,O-chelating 2-{[2-(4-methoxyphenyl)ethyl]iminomethyl}phenolate groups. One of the three methoxy group is disordered over two sets of sites with an occupancy ratio of 0.768 (5):0.232 (5). The crystal packing can be described by alternating zigzag layers of organic ligands and CoN3O3 octahedra along the c axis. There are no classical hydrogen bonds in the structure, but C—H⋯π interactions occur
2-Amino-3-carboxypyrazin-1-ium perchlorate bis(2-aminopyrazin-1-ium-3-carboxylate) monohydrate
The asymmetric unit of the title compound, C5H6N3O2
+·ClO4
−·2C5H5N3O2·H2O, comprises two symmetry-independent zwitterions, one cation, one perchlorate anion and one water molecule. In the crystal, the three different types of organic entities are linked by N—H⋯O and N—H⋯N hydrogen bonds, forming undulating sheets parallel to (1-10). These sheets are in turn connected by O—H⋯N and O—H⋯O hydrogen bonds involving perchlorate anions and water molecules, forming a three-dimensional network. Intramolecular N—H⋯O and weak intermolecular C—H⋯O hydrogen bonds are also present
2-Amino-3-carboxypyrazin-1-ium nitrate monohydrate
In crystal structure of the title compound, C5H6N3O2
+·NO3
−·H2O, intermolecular N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds link the cations, anions and water molecules into ribbons extending in [10]. Weak intermolecular C—H⋯O hydrogen bonds further link these ribbons into sheets parallel to (
3)
Tris(piperazine-1,4-diium) bis[hexachloridoindate(III)] tetrahydrate
The asymmetric unit of the title compound, (C4H12N2)3[InCl6]2·4H2O, consists of one and half independent piperazinium cations, an hexachloridoindate anion and two molecules of water. The InIII ion is six-coordinated and forms a quasi-regular octahedral arrangement. In the crystal, alternating layers of cations and anions are arranged parallel to (10) and are linked with the water molecules via intra- and intermolecular N—H⋯O, O—H⋯Cl, C—H⋯O and N—H⋯Cl hydrogen bonds, forming a complex three-dimensional network. Additional stabilization within the layers is provided by weak intermolecular C—H⋯Cl interactions
Bis(cytosinium) aquapentachloridoindate(III)
The asymmetric unit of the title compound, (C4H6N3O)2[InCl5(H2O)], comprises two independent cytosinium cations and an aquapentachloridoindate anion. The InIII ion is in a slightly distorted octahedral coordination geometry. In the crystal, alternating layers of cations and anions are arranged along [010] and are linked via intermolecular N—H⋯O, O—H⋯Cl and N—H⋯Cl hydrogen bonds, forming sheets parallel to (001). Additional stabilization within these sheeets is provided by weak intermolecular C—H⋯O interactions
Bis(5-amino-3-carboxy-1H-1,2,4-triazol-4-ium) sulfate dihydrate
The crystal structure of the title compound, 2C3H5N4O2
+·SO4
2−·2H2O, displays a three-dimensional framework in which mixed infinite chains [oriented parallel to (510) and (10)] interfere, forming tunnels extending parallel to the c axis. Intermolecular O—H⋯O, N—H⋯O and O—H⋯N hydrogen bonds ensure the unity of the structure and generate centrosymmetric R
4
4(14) and R
4
2(8) rings. The S atom lies on a twofold axis
2-[({2-[(2-Hydroxy-5-methoxybenzylidene)amino]ethyl}imino)methyl]-4-methoxyphenol
The asymmetric unit of the title compound, C18H20N2O4, contains one-half molecule with an inversion center located at the centroid of the molecule. In the crystal, molecules are linked by C—H⋯π interactions, forming layers parallel to (101). An intramolecular O—H⋯N hydrogen bond also occurs
- …