Metal-free catalysts composed of heavy main group element(s) have been limited. Herein, a theoretical study unveils that pincer-type phosphorus compound bearing boryl-pendant is good catalyst for H2 generation from ammonia borane through phosphorus-boryl (P−B) cooperation function. Pincer-type without not active this reaction, indicating the important role P−B

Nitrification is essential to biological processes designed to remove ammonia and/or total nitrogen. It removes excess nitrogenous compound in wastewater which could be very toxic to the aquatic fauna or cause serious imbalance of such aquatic ecosystem. Efficient nitrification is linked to an in-depth knowledge of the structure and dynamics of the nitrifying community structure within the wast...

Abstract The new compounds with the sum formulae [Cs([18]crown‐6)] 2 [Zn(C H) 4 ] ⋅ 8NH 3 , Rb [Rb([18]crown‐6)(NH )][Cd(C {[18]crown‐6 2NH } NH and [Cs([2.2.2]crypt)][In(C 6 H 5 ) (C H)] were synthesized in liquid ammonia. anionic units show tetrahedrally coordinated central atoms four hydrogenacetylide ligands or one C − three ligands. Solid state starting materials for these either A ( =Rb, ...

Urease has attracted much attention, as it is directly involved in the formation of infection stones and contributes to the pathogenesis of urolithiasis, pyelonephritis, ammonia and hepatic encephalopathy, hepatic coma and urinary catheter encrustation. Moreover, urease is the major cause of pathologies induced by H. pylori, such as gastritis and peptic ulcer. In the present work, the new natur...

Beryllium difluoride BeF2 reacts with liquid ammonia forming discrete diammine difluoro beryllium(II) [BeF2(NH3)2] molecules. The colorless compound crystallizes in the monoclinic space group P21/c with a = 4.8815(2), b = 6.8528(3), c = 10.3690(5) Å, β = 92.01(1)◦ , V = 346.65(3) Å3 at 123 K with Z = 4. [BeF2(NH3)2] is the first structurally characterized example of a berylliumammonia complex. ...

The synthesis of a phosphorus(III) compound bearing a N,N-bis(3,5-di-tert-butyl-2-phenoxy)amide ligand is reported. This species has been found to react with ammonia and water, activating the E-H bonds in both substrates by formal oxidative addition to afford the corresponding phosphorus(V) compounds. In the case of water, both O-H bonds can be activated, splitting the molecule into its constit...

Sodium amide (NaNH2) in its α form is a common compound that has recently seen renewed interest, mainly for potential use as solid-state hydrogen storage material. In this work, we present synergic theoretical and experimental characterization of the compound, including novel measured simulated vibrational spectra (IR Raman) X-ray diffraction patterns. We put forward hypothesis low-temperature ...

By treating a suitable Wittig reagent under acid conditions, the phosphonate ester 1,4-bimethylenebenzene phosphonate ethyl ester (H2[BBPE], 1) was obtained. As a building block, compound 1 has been reacted with the Lewis-base N,N-dimethylpiperazine, ammonia and NaOH yielded compounds 2-4. The crystal structures show that a 1D chain forming a tubular channel is constructed through hydrogen bond...

A non-protein sulfhydryl substance occurs in edible asparagus. Fresh press-juice gives a test for both sulfhydryl and disulfide groups, so that an equilibrium apparently exists in the plant between the sulfhydryl and the disulfide (oxidized) form. However, when press-juice is exposed to atmospheric oxygen, the sulfhydryl form goes over completely to the oxidized form. Attempts to identify this ...

This is a review paper on the effects of aluminum sulfate (alum) on ammonia volatilization and P runoff from poultry litter. Initially, laboratory studies were conducted that showed P solubility could be reduced in poultry litter with Al, Ca, and Fe amendments, indicating that these amendments may reduce P runoff. These results were confirmed in small plot studies in which alum applications to ...