3-Amino-2-chloropyridinium dihydrogenphosphate

Abstract

The crystal structure of the title compound, C5H6ClN2+·H2PO4−, can be described as a stacking of 3‐amino‐2‐chloropyridinium cations and dihydrogenphosphate anions. As well as electrostatic van der Waals interactions, the component species interact by means of multiple hydrogen bonds. The H2PO4− units are linked into polymeric chains propagating along the c axis by way of O—H...O hydrogen bonds. The organic cations are anchored between planes parallel to ac, linking the chains into a three‐dimensional network.

Synthesis, structure, and magnetic properties of bis (3-amino-2-chloropyridinium)tetrahalocuprate(II) [halide = Cl or Br]

“…The asymmetric unit is shown in The bond lengths and angles for the 3-amino-2-chloropyridinium cations are comparable to those in Compound 1 and thus also to those in 3-amino-2-chloropyridinium dihydrogenphosphate. 22 The copper bromide bond lengths are normal, averaging 2.3873(5) Å, and are slightly longer than the corresponding Cu-Cl bond lengths as expected. The cations are nearly planar with mean deviations of 0.0044 Å and 0.0076 Å from the plane for the N1 and N11 rings, respectively.…”

“…The bond lengths and angles for the 3-amino-2-chloropyridinium ions are comparable to that of the related 3-amino-2-chloropyridinium complex --3-amino-2-chloropyridinium dihydrogenphosphate. 22 The copper chloride bond lengths are normal, averaging 2.2542(5) Å.…”

Self-Assembly of Hydrogensquarates: Crystal Structures and Properties

“…This phenomenon has been mentioned in refs , . The multicomponent IR band in this case is split according to the number of the molecules in the unit cell in the components with different intensities (see above and ref ), and these components have different polarization if the molecules are oriented in a different way. The elimination of the components of the band at 688 cm −1 at different dichroic ratio is observed.…”

“…The reported structure of 1 is the second crystallographically characterized salt of 2-chloro-3-aminopyridine. The first one is 3-amino-2-chloropyridinium dihydrogenphosphate (CCDC code PIFJAQ). It is interesting to note that in contrast to the last salt in the case of 1 , the primary NH 2 -group participates in an asymmetric intermolecular hydrogen bond, leading to the assumption that the symmetric stretching vibration ν s NH2 will be split into pairs of bands as a result of the FR effect.…”

Synthesis, growth, structure and nonlinear optical properties of a semiorganic 2-carboxy pyridinium dihydrogen phosphate single crystal

“…The hydrogen bond network in 2-carboxy pyridinium dihydrogen phosphate is mainly stabilized by the presence of strong NAHÁ Á ÁO and OAHÁ Á ÁO hydrogen bonds as observed in most of dihydrogen phosphate salts [21][22][23][24]. Also the presence of CAHÁ Á ÁO interaction contributes the formation of molecular binding in the crystalline solid.…”