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Isonicotinium hydrogen sulfate.

ABSTRACT: The crystal structure of the title compound, C(6)H(6)NO(2) (+)·HSO(4) (-), is stabilized by inter-molecular N-H?O and O-H?O hydrogen bonds.

SUBMITTER: Chen LZ

PROVIDER: S-EPMC2970240 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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Isonicotinium hydrogen sulfate.

Chen Li-Zhuang LZ

Acta crystallographica. Section E, Structure reports online 20090905 Pt 10

The crystal structure of the title compound, C(6)H(6)NO(2) (+)·HSO(4) (-), is stabilized by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds. ...[more]

PMID: 21577818

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Anilinium hydrogen sulfate.

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Nicotinium hydrogen sulfate.

Project description:The structure of title compound, C(6)H(6)NO(2) (+)·HSO(4) (-), comprises discrete ions which are inter-conected by N-H?O and O-H?O hydrogen bonds, leading to a neutral one-dimensional network along [001]. These hydrogen bonds appear to complement the Coulombic inter-action and help to stabilize the structure further.

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Tris(4-hydroxy-pyridinium) hydrogen sulfate-sulfate monohydrate.

Project description:In the crystal structure of the title salt, 3C(5)H(6)NO(+)·HSO(4) (-)·SO(4) (2-)·H(2)O, the hydrogen sulfate ion is linked to the sulfate ion by an O-H?O hydrogen bond. The hydrogen sulfate-sulfate anion is a hydrogen-bond acceptor for the three independent cations and the uncoordinated water mol-ecule, the hydrogen-bonding inter-actions giving rise to a three-dimensional hydrogen-bonded network. In the hydrogen sulfate-sulfate species, one of the sulfate groups is disordered in respect of its O atoms in a 2:1 ratio.

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Crystal structure of tris-(piperidinium) hydrogen sulfate sulfate.

Project description:In the title molecular salt, 3C5H12N(+)·HSO4 (-)·SO4 (2-), each cation adopts a chair conformation. In the crystal, the hydrogen sulfate ion is connected to the sulfate ion by a strong O-H?O hydrogen bond. The packing also features a number of N-H?O hydrogen bonds, which lead to a three-dimensional network structure. The hydrogen sulfate anion accepts four hydrogen bonds from two cations, whereas the sulfate ion, as an acceptor, binds to five separate piperidinium cations, forming seven hydrogen bonds.

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4-Cyano-pyridinium hydrogen sulfate.

Project description:All non-H atoms of the cation of the title salt, C(6)H(5)N(2) (+)·HSO(4) (-), are essentially coplanar [r.m.s. deviation = 0.005?(1)?Å] . In the crystal, N-H?O and O-H?O hydrogen bonds and weak C-H?O and C-H?N inter-actions link the mol-ecules into a two-dimensional network parallel to the (001) plane. Weak ?-? stacking inter-actions between the pyridine rings of neighbouring mol-ecules further stabilize the structure [centroid-centroid distance = 3.785?(1)?Å].

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4-Acetyl-pyridinium hydrogen sulfate.

Project description:The crystal structure of the title compound, C(7)H(8)NO(+)·HSO(4) (-), consists of O-H?Ohydrogen-bonded extended chains of hydrogen sulfate anions. Each hydrogen sulfate anion is furthermore connected to one 4-acetyl-pyridinium cation via a hydrogen bond of the N-H?O type.

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2-Amino-benzimidazolium hydrogen sulfate.

Project description:In the title salt, C(7)H(8)N(3) (+)·HSO(4) (-), the benzimdazole ring system is planar [mean deviation 0.0086?(1)?Å]. In the crystal, N-H?O and O-H?O hydrogen-bond inter-actions give rise to a layer motif.

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4-Hydroxy-pyridinium hydrogen sulfate.

Project description:The crystal structure of the title salt, C(5)H(6)NO(+)·HSO(4) (-), consists of planar(r.m.s. deviation = 0.001 Å) 4-hydroxy-pyridinium cations and hydrogen sulfate anions which are hydrogen bonded into a layer motif. In the anion, the S-O bond [1.551 (2) Å] involving the O atom bearing the acid H atom is longer than the other three S-O bonds, which range from 1.437 (1) to 1.454 (1) Å.

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2-Amino-pyrimidinium hydrogen sulfate.

Project description:In the crystal structure of the title compound, C(4)H(6)N(3) (+)·HSO(4) (-), hydrogen sulfate anions self-assemble through O-H?O hydrogen bonds, forming chains along the b axis, while the cations form centrosymmetric pairs via N-H?N hydrogen bonds. The 2-amino-pyrimidinium pairs are linked to the sulfate anions via N-H?O hydrogen bonds, forming a two-dimensional network parallel to (10[Formula: see text]). In addition, weak inter-molecular C-H?O contacts generate a three-dimensional network.

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Hydrogen vs Lactate as electron donor in Sulfate reduction

Project description:In order to obtain a global view of energy metabolism pathways of the sulfate-reducer Desulfovibrio vulgaris Hildenborough and the proteins involved therein whole-genome microarrays were used to compare the transcriptional response of cells grown with hydrogen/sulfate, pyruvate/sulfate, lactate/thiosulfate, and pyruvate with limiting sulfate, relative to growth in standard lactate/sulfate condition. Growth with hydrogen/sulfate showed the largest number of differently expressed genes and the largest changes in expression levels. The most up-regulated energy metabolism genes were those coding for the periplasmic [NiFeSe] hydrogenase, followed by the Ech hydrogenase, and the most down-regulated were genes coding for the Coo hydrogenase. The results point to the involvement of formate cycling and the ethanol pathway during growth on hydrogen, whereas there is evidence for CO cycling during growth on lactate and pyruvate, but not on H2. Growth with thiosulfate showed the hallmarks of a reduced energy status of the cells with down regulation of the ATP synthase and the Qmo and Dsr complexes., whereas growth with pyruvate showed the smallest differences but an increased role for the Ech hydrogenase.that in this case functions in reverse from the case of growth with H2. The multiple periplasmic hydrogenases and formate dehydrogenases, do not display the same regulation pattern showing that their metabolic roles are not totally interchangeable. This result together with the observation that several genes coding for proteins that have not been biochemically characterised were considerably affected in this study, reveals a more complex energy metabolism than previously considered and provides guidance for further studies. Keywords: Growth protocol

2008-05-31 | GSE8037 | GEO

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