ABSTRACT: The title compound, C(4)H(10)N(+)·Cl(-), was obtained as a decomposition product from 2,6-bis-(pyrrolidin-yl)pyridine. The anion lies on the same cristallographic mirror plane as the N atom of the cation, the complete cation being generated by mirror symmetry. The anions and cations are connected by N(+)-H?Cl(-) hydrogen bonds into chains along . The pyrrolidinium cation is puckered in an envelope conformation E(N1).
Project description:The aymmetric unit of the title compound, C(8)H(18)N(+)·Cl(-), consists of one crystallographically independent 1-methyl-1-propyl-pyrrolidinium cation and one chloride anion, both of which lie in general positions. Minor hydrogen-bonded C-H?Cl inter-actions occur. However, no classical hydrogen bonding is observed.
Project description:The asymmetric unit of the title salt, C5H8N3 (+)·Cl(-), comprises one half of the 2,6-di-amino-pyridinium cation (the other half being completed by the application of mirror symmetry) and one Cl(-) counter-anion, also located on the mirror plane. The amino N atom shows a significant pyramidalization, with a dihedral angle of 30.4?(14)° between the least-squares planes of the amino group and the non-H atoms of the 2,6-di-amino-pyridinium moiety. In the crystal, the cationic mol-ecules and Cl(-) counter-anions are arranged in sheets parallel to (001) consisting of alternating polar and non-polar parts associated with the the Cl(-) anions, pyridinium and amino moieties, and the pyridine rings, respectively. N-H?Cl inter-actions within the polar part, as well as slipped ?-? inter-actions in the non-polar part, help to establish the three-dimensional network.
Project description:In the title mol-ecular salt, C14H22NO(+)·Cl(-), the pyrrolidinium ring adopts a twisted conformation about one of the N-C bonds. It is oriented at a dihedral angle of 42.0?(1)° with respect to the benzene ring. The torsion angle for the central N-C-C-Car (ar = aromatic) linkage is 163.74?(15)°. In the crystal, the components are linked via N-H?Cl and O-H?Cl hydrogen bonds, forming zigzig chains along the b-axis direction. These chains are connected along the c axis by very weak C-H?? inter-actions, forming a two-dimensional supra-molecular network.
Project description:In the title compound, C(22)H(28)F(2)NO(2) (+)·CHO(2) (-), there are three independent pyrrolidinium formate salt mol-ecules. In each cation, the central pyrrolidinium ring is not planar and the 2,5-disubstituted phenyl-ethyl groups are in equatorial positions. In the crystal, the ions are linked into a pair of chains parallel to the c axis by N-H?O hydrogen bonds between the NH group of the pyrrolidinium ring and the formate O atoms.
Project description:The crystal structure of the title compound, C(9)H(20)NO(+)·Cl(-)·0.33(H(3)O(+)·Cl(-)), is composed of 4-hydr-oxy-2,2,6,6-tetra-methyl-piperidinium cations, hydroxonium cations and chloride anions, which are connected via O-H?O, O-H?Cl and N-H?Cl hydrogen bonding. The 4-hydr-oxy-2,2,6,6-tetra-methyl-piperidinium cation and one of the two crystallographically independent chloride anions are located on a mirror plane. The hydroxonium cation is located on a threefold axis and the second crystallographically independent chloride anion is located on a sixfold rotoinversion axis. Due to symmetry, the hydroxonium cation is disordered over two positions.
Project description:In the title mol-ecular salt, C(5)H(13)N(2)O(2)S(+)·Cl(-), the complete cation is generated by crystallographic mirror symmetry, with both N atoms, the S atom and one C atom lying on the reflecting plane. The chloride ion also lies on the mirror plane. The piperazinium ring adopts a chair conformation and the N-S bond adopts an equatorial orientation. In the crystal structure, the component ions are linked into a three-dimensional framework by inter-molecular N-H?Cl and C-H?Cl hydrogen bonds.
Project description:In the title mol-ecular salt, C6H10N2 (2+)·NO3 (-)·Cl(-), the complete cation is generated by a crystallographic mirror plane. The complete nitrate ion is also generated by reflection, with the N atom and one O atom lying on the mirror plane; the chloride ion also lies on the reflection plane. In the crystal, the components are linked by N-H?Cl and N-H?(N,O) hydrogen bonds, forming (001) layers with the benzene rings projecting into the inter-layer regions. The layers are linked by weak C-H?O hydrogen bonds, generating a three-dimensional network.
Project description:In the title salt, C(14)H(16)N(+)·Cl(-), the complete cation and complete anion are generated by the application of mirror symmetry. The mol-ecule is nonplanar, as seen in the dihedral angle between the terminal phenyl rings [70.92?(5)°]. In the crystal, N-H?Cl hydrogen bonds involving both aza-nium H atoms link the ions into a zigzag supra-molecular chain along .
Project description:The title compound, K(2)[SnCl(3)]Cl·H(2)O, is the prototype of some isostructural compounds of composition M(2)[SnX(3)]X·H(2)O (M = large monovalent cation; X = halogen). In comparison with a previous study based on photographic data [Kamenar & Grdeni? (1962 ?). J. Inorg. Nucl. Chem.24, 1039-1045], its crystal structure has now been redetermined using CCD-based data in order to gain more accurate values for bond lengths and angles within the [SnCl(3)](-) anion and to locate the H atoms. The [SnCl(3)](-) anion has a trigonal-pyramidal shape and exhibits crystallographic mirror symmetry. With the exception of the K(+) ion which is located on a general position, all other atoms are situated on crystallographic mirror planes. The coordination polyhedron of the cation may be described by means of nine atoms in the form of a monocapped square anti-prism with seven typical K-Cl/O distances and two additional atoms at considerably longer distances. The positions of the H atoms of the water mol-ecule (also lying on a crystallographic mirror plane) could be determined and confirm the existence of a bifurcated O-H?Cl hydrogen bond to neighbouring Cl atoms.