The gas-phase structures of alkali-metal cationized glutamine are investigated by using both infrared multiple photon dissociation (IRMPD) action spectroscopy, utilizing light generated by a free electron laser, and theory. The IRMPD spectra contain many similarities that are most consistent with glutamine adopting nonzwitterionic forms in all ions, but differences in the spectra indicate that ...

Single crystals of glycine zinc sulfate penta-hydrate [systematic name: hexa-aqua-zinc tetra-aquadiglycinezinc bis-(sulfate)], [Zn(H2O)6][Zn(C2H5NO2)2(H2O)4](SO4)2, have been grown by isothermal evaporation from aqueous solution at room temperature and characterized by single-crystal neutron diffraction. The unit cell contains two unique ZnO6 octa-hedra on sites of symmetry -1 and two SO4 tetra...

Molecular beam electric deflection measurements have been used to determine electric susceptibilities for small unsolvated alanine-based peptides. The electric susceptibility provides information about the charge distribution within the peptide and can be used to distinguish between zwitterionic and canonical forms. Measured electric susceptibilities for WAn peptides (n = 1-5) are similar to th...

Azolium-2-thiocarboxylate zwitterion ligands have emerged as a promising class of compounds in the field coordination chemistry due to their unique structural features and versatile applications. These are characterized by positively charged azolium ring negatively thiocarboxylate moiety, making them capable forming stable complexes with various metal ions. One key aspects that make these attra...

In the title hydrated zwitterion, C11H13NO3S2·H2O, the N-C-C-C and C-C-C-S torsion angles in the side-chain are 171.06 (14) and 173.73 (12)°, respectively. In the crystal, inversion-related mol-ecules are π-stacked with an inter-planar separation of 3.3847 (2) Å. O-H⋯O hydrogen bonds link inversion-related mol-ecules with a pair of water mol-ecules to form R 4 (2)(8) rings. The closest S⋯S cont...