In the centrosymmetric binuclear title molecule, [Co(2)(SO(4))(2)(C(8)H(7)N(3))(4)], the Co(II) ion is coordinated by two N,N'-bidentate 3-(2-pyrid-yl)pyrazole ligands and two sulfate ions, generating a distorted cis-CoO(2)N(4) octa-hedral geometry for the metal atom. The dihedral angles between the pyridine and pyrazole rings in the two ligands are 10.5 (2) and 7.38 (19)°. The bridging sulfate...

The title salt, C(8)H(11)N(2)O(+)·HSO(4) (-), has been synthesized by the reaction between 4-meth-oxy-benzamidine and sulfuric acid. The asymmetric unit comprises a nonplanar 4-meth-oxy-benzamidinium cation and one hydrogen sulfate anion. In the cation, the amidinium group has two identical C-N bonds [1.306 (2) and 1.308 (2) Å], and its plane forms a dihedral angle of 6.49 (8)° with the mean pl...

In this research, we have developed cheap recyclable and task-specific acidic ionic liquids (AILs) 1-hydrogen-3-methylimidazolium hydrogen sulfate [Hmim]HSO4, 1-hydrogen-3-methylimidazolium chloride [Hmim]Cl, 2-pyrrolidonium hydrogensulfate [Hnhp]HSO4 and applied them in acid catalyzed synthesis of quinoxaline derivatives from 1,2-phenylendiamines and 1,2-dicarbonyl compounds. The products coul...

The asymmetric unit of the title compound, 2C(5)H(7)N(2) (+)·SO(4) (2-)·H(2)O, contains two 4-amino-pyridinium cations (A and B), a sulfate dianion and a water mol-ecule. One of the 4-amino-pyridinium cations (B) is disordered over two orientations with refined site occupancies of 0.568 (4) and 0.432 (4). The non-H atoms of the 4-amino-pyridinium cations are essentially coplanar, with a maximum...

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.

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.

The title complex, [Cu(SO(4))(C(6)H(8)N(2))(2)]·H(2)O, was obtained under hydro-thermal conditions. The Cu(II) ion is five-coordinated in a distorted square-pyramidal manner by four N atoms from two benzene-1,2-diamine ligands at the base and one O atom from a monodentate sulfate anion at the apex of the coordination polyhedron. N-H⋯O hydrogen bonding between the amino functions and the sulfate...

Desulfovitio d&dfUTiCam is an obligately anaerobic organism that can bc grown heterotrophically with sulfate and an organic electron donor or autotrophically with sulfate, hydrogen, and CO* (1). The presence of sulfate is obligatory for growth both with hydrogen and organic electron donors, except in the case of pyruvate (2). During growth, large amounts of sulfide are produced from the sulfate...

The asymmetric unit of the title compound, [Fe(C(3)H(4)N(2))(6)]SO(4)·2C(3)H(4)N(2), contains two complex cations, two sulfate anions and four imidazole mol-ecules. In both cations, the Fe(II) atom is coordinated by six monodentate imidazole ligands and exhibits a slightly distorted octa-hedral coordination geometry. The Fe-N distances [2.184 (4)-2.218 (4) Å] point to a high-spin state of the F...