The crystal structure of 3-carboxy-5-methylpyridin-1-ium-2-carboxylate, C8H7NO4
نویسندگان
چکیده
منابع مشابه
Crystal structure of (Z)-4-methylbenzyl 3-[1-(5-methylpyridin-2-yl)ethylidene]dithiocarbazate1
In the title dithiocarbazate compound, C17H19N3S2, the central CN2S2 residue is essentially planar (r.m.s. deviation = 0.0288 Å) and forms dihedral angles of 9.77 (8) and 77.47 (7) with the substituted-pyridyl and p-tolyl rings, respectively, indicating a highly twisted molecule; the dihedral angle between the rings is 85.56 (8) . The configuration about the C N bond is Z, which allows for the ...
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The title mol-ecule, C17H15ClN2O2, is L-shaped with the 4-chloro-benzyl-idene ring almost coplanar with the planar pyrazolidine ring (r.m.s. deviation = 0.020 Å), making a dihedral angle of 4.83 (17)°. The 4-meth-oxy-phenyl ring is almost normal to the mean plane of the pyrazolidine ring and the 4-chloro-benzyl-idene ring, with dihedral angles of 87.36 (17) and 89.23 (16)°, respectively. The py...
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The title compound, C20H27ClN2O3, was obtained via an original synthesis method. The central heterocyclic ring adopts a shallow envelope conformation, with the N atom bearing the cyclo-pentane ring as the flap [deviation from the other atoms = 0.442 (2) Å]. The cyclo-pentane ring adopts a twisted conformation about one of the CN-C bonds: the exocyclic C-N bond adopts an equatorial orientation. ...
متن کاملCrystal structure of 1-(3-chlorophenyl)piperazin-1-ium picrate–picric acid (2/1)
The title salt {systematic name: bis-[1-(3-chloro-phen-yl)piperazinium 2,4,6-tri-nitro-phenolate]-picric acid (2/1)}, 2C10H14ClN2 (+)·2C6H5N3O7 (-)·C6H6N3O7, crystallized with two independent 1-(3-chloro-phen-yl)piperazinium cations, two picrate anions and a picric acid mol-ecule in the asymmetric unit. The six-membered piperazine ring in each cation adopts a slightly distorted chair conformati...
متن کاملCrystal structure of 4-amino-5-fluoro-2-oxo-2,3-dihydropyrimidin-1-ium 3-hydroxypyridine-2-carboxylate
The asymmetric unit of the title salt, C4H5FN3O(+)·C6H4NO3 (-), contains one 4-amino-5-fluoro-2-oxo-2,3-di-hydro-pyrimidin-1-ium (5-fluoro-cytosinium, 5FC) cation and a 3-hy-droxy-picolinate (3HAP) anion. The 4-amino-5-fluoro-2-oxo-2,3-di-hydro-pyrimidine mol-ecule is protonated at one of the pyrimidine N atoms. The typical intra-molecular N-H⋯F and O-H⋯O S(5) and S(6) hydrogen-bond ring motifs...
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ژورنال
عنوان ژورنال: Zeitschrift für Kristallographie - New Crystal Structures
سال: 2020
ISSN: 2197-4578,1433-7266
DOI: 10.1515/ncrs-2019-0722