The asymmetric unit of the title compound, NH(4) (+)·CF(2)NO(4)S(2) (-), consists of two crystallographically independent ammonium cations and two 4,4-difluoro-1,3,2-dithia-zetin-2-ide 1,1,3,3-tetra-oxide anions all located in general positions. The S-C-S-N rings of both crystallographically independent anions are almost planar, with the N atom bent out of the plane by 9.82 (5) and 12.82 (4)°. ...

The asymmetric unit of the polymeric title compound, [Ni(C8H4O4)(C10H14N4)(H2O)] n , contains one Ni(2+) cation, one coordinating water mol-ecule, one 3,3',5,5'-tetra-methyl-4,4'-bi-pyrazole ligand and half each of two benzene-1,4-di-carboxyl-ate anions, the other halves being generated by inversion symmetry. The Ni(2+) cation exhibits an octa-hedral N2O4 coordination sphere defined by the O at...

The crystal structure of the title compound, [Cd(2)Cl(2)(C(2)H(8)N(2))(4)]Cl(2), consists of binuclear centrosymmetric [Cd(2)(C(2)H(8)N(2))(4)Cl(2)](2+) cations and discrete chloride anions. The Cd(II) cation is coordinated by four N atoms of two ethyl-enediamine ligands and two symmetry-related chloride anions within a distorted CdN(4)Cl(2) octa-hedron. Two Cd(II) cations are connected by two ...

A new magnetic-bottle time-of-flight photoelectron spectroscopy (PES) apparatus is constructed in our laboratory. The PES spectra of iron sulfide, hydrosulfide, and mixed sulfide/hydrosulfide [FeSm(SH)n-; m, n = 0-3, 0 < (m + n) ≤ 3] cluster anions, obtained at 2.331 eV (532 nm) and 3.492 eV (355 nm) photon energies, are reported. The electronic structure and bonding properties of these cluster...

Due to its symmetric structure and abundance of carboxyl groups, mellitic acid (MA-benzenehexacarboxylic acid) has an uncommon capacity to form highly ordered molecular networks. Dissolved in water, MA dissociates to yield various mellitate anions with pronounced tendencies to form complexes with cations including protonated amines. Deprotonation of MA at physiological pH produces anions with h...

The title compound, {[Co(3)(C(6)H(4)NO(2))(2)(C(8)H(3)NO(6))(2)(H(2)O)(2)]·4H(2)O}(n), exhibits a two-dimensional layer-like structure in which the Co(II) ions exhibit two kinds of coordination geometries. One nearly octa-hedral Co(II) ion with crystallographic inversion symmetry is coordinated to six carboxyl-ate O atoms from four bridging 5-nitro-isophthalate (NIPH) ligands and two isonicotin...