Ammonia

Ammonia-water cation and ammonia dimer cation.

We have investigated the structure, interaction energy, electronic properties, and IR spectra of the ammonia-water cation (NH(3)H(2)O)(+) using density functional theory (DFT) and high-level ab initio theory. The ammonia-water cation has three minimum-energy structures of (a) H(2)NH(+)...OH(2), (b) H(3)N(+)...OH(2), and (c) H(3)NH(+)...OH. The lowest-energy structure is (a), followed by (c) and...

Advanced Ammonia Casale Technologies for Ammonia Plants

Ammonia tepida

Introduction Conclusions References Tables Figures

Ammonia–triphenyl­borane

The asymmetric unit of the title compound, C(18)H(18)BN or (C(6)H(5))(3)B·NH(3), comprises two crystallographically independent but virtually identical mol-ecules. Mol-ecules of one type are linked with each other by N-H⋯π inter-actions, generating an infinite column aligned along the b-axis direction. The columns of different types of mol-ecules are inter-connected by C-H⋯π inter-actions, prod...

Ammonia and brain glutamine: inhibition of glutamine degradation by ammonia.

(the concentration used for radioautography), the uptake was mainly into the inner retina. However, as the exogenous taurine concentration was decreased to > 1 p~ the percentage of label accumulated by the photoreceptor layer increased with respect to the total uptake (Table 1). Further studies were carried out with the use of lOmin incubations and exposing the retinas to exogenous taurine conc...