2-Amino-5-nitropyridinium hydrogen oxalate

In the title molecular salt, C6H9N2+·C8H6NO4−, the cation is protonated at its pyridine N atom. In the crystal, the anions are connected by a pair of C—H...O contacts into [100] chains, which generateR22(11) loops and these chains are linkedviaanother C—H...O contact which encloses anR24(10) loop. Adjacent anions and cations are connected through N—H... O hydrogen bonds, generating anR22(8) loop. Two pairs of anions and cations are linked by N—H...O hydrogen bonds, forming a tetramer with anR22(8) loop motif. The packing also features weak C—H...π and π–π [centroid-to-centroid distances = 3.8972 (11) and 3.9549 (10) Å] interactions, which result in a three-dimensional network.

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“…1). The bond lengths are comparable with reported similar structures (Babu et al, 2014;Rajkumar et al, 2014).…”

Section: Structure Descriptionsupporting

confidence: 90%

2-Amino-4-methylpyridinium 2-(4-nitrophenyl)acetate

et al. 2016

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“…The crystallographic data of 2A6MPS (13)°in unprotonated aminopyridine [9]. This type of protonation is observed in various aminopyridine acid complexes [10][11][12]. The 2-amino-6-methylpyridinium cation and salicylate anion are having a maximum deviation of 0.001 (2) , similar to those observed previously for the aminopyridinium cation.…”

Section: Resultssupporting

confidence: 62%

Synthesis, growth, structural, thermal, dielectric, linear and nonlinear optical studies of 2-amino 6-methylpyridinium salicylate single crystal

Venda

Peramaiyan

NizamMohideen

et al. 2016

J Opt

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Single crystal of 2-amino 6-methylpyridinium salicylate (2A6MPS) was grown for the first time by the slow evaporation method. Single crystal X-ray diffraction analysis was employed to estimate the cell parameters of the grown crystal. The third order nonlinear optical properties of 2A6MPS was studied by the Z-scan technique using 532 nm diode pumped CW Nd:YAG laser. Nonlinear refractive index, nonlinear absorption coefficient and nonlinear susceptibility of the grown crystal were found to be 10 -8 cm 2 /W, 10 -4 cm/W and 10 -6 esu, respectively. Thermal stability of 2A6MPS was studied by thermogravimetry (TG) and differential thermal analyses (DTA). The optical transmittance window and the lower cut-off wavelength of 2A6MPS were identified by UV-Vis-NIR studies. From the dielectric measurements, the relative dielectric permittivities e 11 and e 33 values were determined.

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“…For crystal structures of related pyridine derivatives and their applications, see: Babu et al (2014); Rajkumar et al (2014); Jin et al (2005). For unprotonated aminopyridine derivatives, see: Anderson et al (2005).…”

Section: Related Literaturementioning

confidence: 99%

“…Benzenesulfonic acid, is a particularly strong organic acid which is capable of protonating N-containing heterocycles and other Lewis bases (Wang & Wei, 2007). We have recently reported the crystal structures of 2-amino-6-methylpyridinium 2,2,2-trichloroacetate (Babu et al, 2014) and 2-Amino-5-nitropyridinium hydrogen oxalate (Rajkumar et al, 2014). In continuation of our studies of pyridinium derivatives, the crystal structure determination of the title compound has been undertaken.…”

Section: S1 Introductionmentioning

confidence: 99%

2-Amino-6-methylpyridinium 4-methylbenzenesulfonate

Babu¹,

Dhavamurthy²,

NizamMohideen³

et al. 2014

Acta Cryst E

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In the asymmetric unit of the title salt, C6H9N2 +·C7H7O3S−, there are two independent 2-amino-6-methylpyridinium cations and two independent 4-methylbenzenesulfonate anions. Both cations are protonated at their pyridine N atoms and their geometries reveal amine–imine tautomerism. In the 4-methylbenzenesulfonate anions, the carboxylate groups are twisted out of the benzene ring planes by 88.4 (1) and 86.2 (2)°. In the crystal, the sulfonate O atoms of an anion interact with the protonated N atoms and the 2-amino groups of a cation via a pair of N—H⋯O hydrogen bonds, forming an R 2 2(8) ring motif. These motifs are connected via N—H⋯O hydrogen bonds, forming chains running along the a-axis direction. Within the chains there are weak C—H⋯O hydrogen bonds present. In addition, aromatic π–π stacking interactions [centroid–centroid distances = 3.771 (2), 3.599 (2), 3.599 (2) and 3.497 (2) Å] involving neighbouring chains are also observed.

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2-Amino-5-nitropyridinium hydrogen oxalate

Cited by 10 publications

References 15 publications

2-Amino-4-methylpyridinium 2-(4-nitrophenyl)acetate

2-Amino-4-methylpyridinium 2-(4-nitrophenyl)acetate

Synthesis, growth, structural, thermal, dielectric, linear and nonlinear optical studies of 2-amino 6-methylpyridinium salicylate single crystal

2-Amino-6-methylpyridinium 4-methylbenzenesulfonate

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