Natural dyes can be poorly water-soluble, and improving their solubility with accurately designed solvents benefit application in most domains. Ionic liquids deep eutectic solvents, systems complex diverse intermolecular interactions, are capable of dissolving compounds different nature polarity. A remarkable increase three natural dyes, indigo, alizarin curcumin, is observed the ionic liquid 1...

The crystal structure of the title salt, C12H9N2 (+)·HSO4 (-)·H2O, comprises inversion-related pairs of phenazinium ions linked by C-H⋯N hydrogen bonds. The phenazinium N-H atoms are hydrogen bonded to the bis-ulfate anions. The bis-ulfate anions and water mol-ecules are linked by O-H⋯O hydrogen-bonding inter-actions into a structural ladder motif parallel to the a axis.

CRYSTALS OF THE HYDROGEN SULFATE SALT OF CHLORDIAZEPOXIDE (SYSTEMATIC NAME: 7-chloro-N-methyl-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-2-iminium 4-oxide hydrogen sulfate), C(16)H(15)ClN(3)O(+)·HSO(4) (-), were obtained from a solution of chlordiazepoxide and sulfuric acid in methanol. The structure features chlordiazepoxide mol-ecules that are protonated at the imine N atom. The seven-membered...

The microbial consortia from produced water at two different oil fields in Alaska (Kuparuk) and the North Sea (Ninian) were investigated for sulfate-reducing and methanogenic activity over a range of temperatures and for a variety of substrates. The consortia were sampled on site, and samples were either incubated on site at 60(deg)C with various substrates or frozen for later incubation and an...

Hydrogen gas (H2) may be produced by the anoxic corrosion of steel components in underground structures, such as geological repositories for radioactive waste. In such environments, hydrogen was shown to serve as an electron donor for autotrophic bacteria. High gas overpressures are to be avoided in radioactive waste repositories and, thus, microbial consumption of H2 is generally viewed as ben...

In the title compound, C(10)H(16)N(2) (2+)·2HSO(4) (-), the S atoms adopt slightly distorted tetra-hedral geometry and the diprotonated piperazine ring adopts a chair conformation. In the crystal, the 1-phenyl-piperazine-1,4-diium cations are anchored between chains formed by the sulfate entities via inter-molecular bifurcated N-H⋯(O,O) and weak C-H⋯O hydrogen bonds. These hydrogen bonds contri...

In the cation of the title compound, C(7)H(9)BrN(+)·HSO(4) (-), the amino N atom is protonated. In the crystal, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds generate an infinite two-dimensional network parallel to (001).

Acetate is a major product of fermentation processes and an important substrate for sulfate reducing bacteria and methanogenic archaea. Most studies on acetate catabolism by sulfate reducers and methanogens have used pure cultures. Less is known about acetate conversion by mixed pure cultures and the interactions between both groups. We tested interspecies hydrogen transfer and coexistence betw...

a highly efficient and environmentally friendly synthesis of various 1,5-diaryl-3-(arylamino)-1h-pyrrol-2(5h)-ones catalyzed by 1-methylpiperidinium hydrogen sulfate via one-pot cyclo-condensation reaction ofaldehydes, amines and ethyl 2-oxopropanoate under ambient conditions has been explored. the presentmethodology offers several advantages such as good yields, simple procedure, shorter react...