We used a scanning tunneling microscope to image the surface of SrFe(2)As(2) single crystals at 4.2 K. We found, besides the commonly reported row structures and some disordered areas, also maze-like regions. Atomically resolved images of the maze show that the atoms on the surface sit on As bridge positions of the underlying Fe(2)As(2) layer. Examination of the corner positions within the maze...

In the title compound, [CoCl(2)(C(13)H(20)N(4))]·H(2)O, the Co(II) atom lies on a mirror plane and is four-coordinated by two N atoms of the imidazole ligand and two Cl atoms in a distorted tetra-hedral arrangement. The water mol-ecule participates in the formation of hydrogen bonds, resulting in a three dimensional network involving the Cl atoms and the NH groups. The terminal C atom of the et...

In the title compound, [Al(C(7)H(9)O(2))(3)], the Al(III) cation is coordinated by six O atoms from three 2-acetyl-cyclo-penta-nonate ligands in a slightly distorted octa-hedral environment, with Al-O bond lengths in the range 1.882 (2)-1.896 (2) Å. In the crystal, mol-ecules are linked together via C-H⋯O inter-actions. One of the C atoms in one ring has a large thermal motion compared to the o...

In the title compound, [Cd(NO(3))(2)(C(12)H(12)N(6))(2)](n), the Cd(II) cation is located on an inversion center and is six-coordinated by four N atoms from four 1,3-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]benzene (L) ligands and two O atoms from two nitrate anions in a slightly distorted octa-hedral geometry. The ligands link different Cd(II) ions into a ribbon-like structure along [001]. Two O at...

The title salt, C4H6N3O(+)·C4H3O4 (-)·C4H5N3O, has been redetermined from the data published by Benali-Cherif, Falek & Direm [Acta Cryst. (2009), E65, o3058-o3059]. The improvement of the present redetermination consists in the discovery of the splitting of one of the H atoms into two disordered positions, the occupancies of which are equal to 0.55 (2) and 0.45 (2). These H atoms are involved i...

In the title complex, {[Cu(C11H16N4)2(H2O)2](C10H6O6S2)} n , the Cu(II) atom, lying on an inversion center, is six-coordinated by two water mol-ecules and four N atoms from four 1,5-bis-(1H-imidazol-1-yl)pentane (biim-5) ligands in a distorted octa-hedral geometry. Adjacent Cu(II) atoms are linked by two biim-5 ligands, forming a chain along [111]. Two atoms of the pentane group are disordered ...

In the title heteronuclear complex, [CuTb(C(19)H(20)N(2)O(4))(NO(3))(3)(CH(3)COCH(3))], the Cu(II) ion is five-coordinated by two O and two N atoms from the 6,6'-dimeth-oxy-2,2'-[propane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolate ligand (L) and an O atom from the acetone mol-ecule in a square-pyramidal geometry. The Tb(III) ion is ten-coordinated by six O atoms from three chelating nitrate l...

In the complex cation of the binuclear solvated title salt, [Pt2F(SbF6)2(C8H12)2]SbF6 0.75HF, an F atom bridges the two platinum(II) atoms with a bond angle of 123.3 (2) . The corresponding Pt—F bond lengths are in the range of other fluorine-bridged binuclear platinum(II) complexes. Two of the three SbF6 anions each coordinate with one F atom to one platinum(II) atom. Including the -bound cycl...

The asymmetric unit of the title compound, C(20)H(18)F(2)N(2)O(2)S, contains four independent mol-ecules, two of which are paired into a dimer by way of two N-H⋯S hydrogen bonds. The other two independent mol-ecules are paired into two centrosymmetric dimers via pairs of inter-molecular N-H⋯S hydrogen bonds. In one mol-ecule, the carboxyl-ate O atoms, methyl-ene and methyl groups attached to th...

In the title compound, [Ni(C(6)H(6)NO(3)S)(2)(C(3)H(7)NO)(2)(H(2)O)(2)]·2H(2)O, the Ni(II) ion (site symmetry ) is coordinated by two -NH(2) groups from two 4-amino-benzene-sulfonate anions, two O atoms from two dimethyl-formamide mol-ecules and two water mol-ecules, forming a slightly distorted trans-NiN(2)O(4) octa-hedral geometry. In the crystal structure, inter-molecular O-H⋯O, O-H⋯(O,O) an...