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5-Amino-3-carb-oxy-1H-1,2,4-triazol-4-ium nitrate monohydrate.

ABSTRACT: The two-dimensional crystal packing of the title compound, C(3)H(5)N(4)O(2) (+)·NO(2) (-)·H(2)O, results from the stacking of well separated layers (i.e. with nothing between the layers) parallel to the (-113) plane in which adjacent cations adopt a head-to-head arrangement such that two -COOH groups are linked via two water mol-ecules (the water O atom behaves simultaneously as donor and acceptor of hydrogen bonds) and two -NH(2) groups are linked through two nitrate anions. This arrangement leads to alternating hydro-philic and hydro-phobic zones in which O-H?O and N-H?O hydrogen bonds, respectively, are observed.

SUBMITTER: Berrah F

PROVIDER: S-EPMC3344063 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature

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5-Amino-3-carb-oxy-1H-1,2,4-triazol-4-ium nitrate monohydrate.

Berrah Fadila F Bouchene Rafika R Bouacida Sofiane S Roisnel Thierry T

Acta crystallographica. Section E, Structure reports online 20120321 Pt 4

The two-dimensional crystal packing of the title compound, C(3)H(5)N(4)O(2) (+)·NO(2) (-)·H(2)O, results from the stacking of well separated layers (i.e. with nothing between the layers) parallel to the (-113) plane in which adjacent cations adopt a head-to-head arrangement such that two -COOH groups are linked via two water mol-ecules (the water O atom behaves simultaneously as donor and acceptor of hydrogen bonds) and two -NH(2) groups are linked through two nitrate anions. This arrangement le ...[more]

PMID: 22589972

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Bis(5-amino-3-carb-oxy-1H-1,2,4-triazol-4-ium) dihydrogenphosphate nitrate 5-amino-1H-1,2,4-triazol-4-ium-3-carboxyl-ate.

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Project description:The crystal structure of the title compound, 2C(3)H(5)N(4)O(2) (+)·SO(4) (2-)·2H(2)O, displays a three-dimensional framework in which mixed infinite chains [oriented parallel to (510) and ([Formula: see text]10)] inter-fere, forming tunnels extending parallel to the c axis. Inter-molecular 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.

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Project description:The non-centrosymmetric crystal structure of the novel semi-organic title compound, C(2)H(5)N(4) (+)·NO(3) (-), is based on alternating layers of 4-amino-1H-1,2,4-triazolinium cations (formed by parallel chains of cations mediated by weak C-H?N hydrogen bonds) and nitrate anions inter-connected via linear and bifurcated N-H?O hydrogen bonds and weak C-H?O hydrogen bonds. N-H?N hydrogen bonds link the anions and cations.

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Project description:In crystal structure of the title compound, C(5)H(6)N(3)O(2) (+)·NO(3) (-)·H(2)O, inter-molecular N-H?O, O-H?N and O-H?O hydrogen bonds link the cations, anions and water mol-ecules into ribbons extending in [10]. Weak inter-molecular C-H?O hydrogen bonds further link these ribbons into sheets parallel to (3).

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Project description:In the 4-nitro-benzene sulfonate anion of the title compound, C(2)H(4)N(3) (+)·C(6)H(4)NO(5)S(-)·H(2)O, the nitro group is slightly twisted from the plane of the benzene ring [dihedral angle = 2.8?(3)°]. In the crystal, the three components are linked via N-H?O, O-H?N, O-H?O and C-H?O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. A short inter-molecular O?N contact of 2.872?(3)?Å is also observed between the nitro and sulfonate groups.

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5-Amino-1H-1,2,4-triazol-4-ium hydrogen oxalate.

Project description:In the title salt, C2H5N4 (+)·C2HO4 (-), the hydrogen oxalate anions form corrugated chains parallel to the c axis, linked by inter-molecular O-H?O hydrogen bonds. The 5-amino-1H-1,2,4-triazol-4-ium cations are connected into centrosymmetric clusters via weak C-H?N hydrogen bonds forming nine-membered rings with an R 3 (3)(9) motif. These clusters are inter-connected via anions through N-H?O hydrogen bonds, building a three-dimensional network.

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5-Amino-1H-1,2,4-triazol-4-ium-3-carboxyl-ate hemihydrate.

Project description:The asymmetric unit of the title compound, C(3)H(4)N(4)O(2)·0.5H(2)O, comprises two whole mol-ecules of 5-amino-1H-1,2,4-triazole-3-carb-oxy-lic acid in its zwitterionic form (proton transfer occurs from the carb-oxy-lic acid group to the N hetero-atom at position 1), plus one water mol-ecule of crystallization. The organic moieties are disposed into supra-molecular layers linked by N-H?O and N-H?N hydrogen bonds parallel to the bc plane. Additional O-H?O and N-H?O hydrogen bonds involving the water mol-ecules and the organic mol-ecules lead to the formation of double-deck supra-molecular arrangements which are inter-connected along the a axis via ?-? stacking [centroid-centroid distance = 3.507?(3)?Å].

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Project description:The neutral carb-oxy-lic acid mol-ecule and the carboxyl-ate anion in the title compound, C(18)H(18)N(6) (2+)·2C(8)H(4)IO(4) (-)·2C(8)H(5)IO(4)·2H(2)O, are both nearly planar (r.m.s. deviations = 0.034 and 0.045?Å, respectively). In the cation, the mid-point of the C-C bond linking the two benzene rings lies on a center of inversion, and the triazole ring is approximately perpendicular to the adjacent benzene ring [dihedral angle = 83.2?(3)°]. In the crystal, the cations, anions, carb-oxy-lic acid and lattice water mol-ecules are linked by N-H?O, O-H?N and O-H?O hydrogen bonds, generating a ribbon running along [1-10]. The crystal studied was a non-merohedral twin with the components in a 51.2?(1):48.8?(1) ratio.

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Project description:In the cation of the title compound, C(7)H(8)N(5) (+)·Cl(-)·H(2)O, the mean planes of the pyridine and 1,2,4-triazole rings form a dihedral angle of 2.3?(1)°. The N atom of the amino group adopts a trigonal-pyramidal configuration. The N atom of the pyridine ring is protonated, forming a chloride salt. In the crystal, inter-molecular N-H?O, N-H?N, N-H?Cl and O-H?Cl hydrogen bonds link the cations, anions and water mol-ecules into layers parallel to the (1, 0, ) plane.

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3-Meth-oxy-4-methyl-1H-1,2,4-triazol-5(4H)-one monohydrate.

Project description:In the title hydrate, C(4)H(7)N(3)O(2)·H(2)O, all the non-H atoms lie on a crystallographic mirror plane. The H atoms of both methyl groups are disordered over two sets of sites. In the crystal, N-H?O(w) and O(w)-H?O(k) (w = water and k = ketone) hydrogen bonds link the components into (010) sheets.

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