The combination of six Cu(II) centres with four cyclotricatechylene (ctc(6-)) ligands generates large (Cu(6)ctc(4))(12-) cages with the topology of the tetrahedron. The anionic tetrahedral cages are cemented together, triangular face to triangular face, by Na(+) cations together with water molecules to generate a highly symmetric diamond-like assembly (space group Fd-3m, the same as that of dia...

In the title compound, [PtI(2)(C(5)H(5)NO)(2)]·2(CH(3))(2)SO, the Pt(II) ion lies on an inversion center and is coordinated in a slightly distorted square-planar environment by two trans iodide ligands and two pyridine N atoms. In the crystal, complex mol-ecules and solvent dimethyl sulfoxide mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds.

Halide ions could be visualized via fluorescence quenching in microcolumn ion chromatography. The fluorescence of quinine sulfate, which was contained in an acidic eluent, was quenched by halide ions. The observed fluorescence quenching values increased in this order: iodide, bromide, and chloride. The present detection system was relatively sensitive to halide ions except for fluoride: other a...

In the mononuclear title complex, [CuI(CH3CN)(C18H15P)2], the Cu(I) ion is in a distorted tetra-hedral geometry, coordinated by two P atoms of two tri-phenyl-phosphane ligands, one N atom of an aceto-nitrile ligand and one iodide anion. The aceto-nitrile ligand is disordered over two sets of sites in a 0.629 (15): 0.371 (15) ratio. In the crystal, weak C-H⋯I hydrogen bonds link the mol-ecules, ...

The mixed lithium tin iodide LiSn3I7 was prepared by reacting LiI and SnI2 at 300 °C. Single-crystal X-ray diffraction revealed a crystal structure related to that of SnI2, with nearly identical coordination environments atoms. ion in the shares one crystallographic position atom octahedral voids (LiSn)Sn2I7, as confirmed solid-state 7Li, 119Sn 127I MAS NMR spectra. DFT band calculations show b...

The asymmetric unit of the title complex, [PdI(2)(C(10)H(8)N(2))], contains one half of the formula unit. The Pd(2+) ion is located on a twofold rotation axis and is four-coordinated in a slightly distorted square-planar environment by two N atoms of the chelating 2,2'-bipyridine ligand and two iodide ions. The compound displays inter-molecular π-π inter-actions between the pyridine rings of th...

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In the title dinuclear complex, [Zn(2)I(4)(C(6)H(8)N(6))(2)], two Zn(II )atoms are bridged by two 1,2-bis-(1,2,4-triazol-4-yl)ethane (btre) ligands, forming a centrosymmetric metallacycle. The coordination geometry of the Zn(II) ion is distorted tetra-hedral with the coordination sphere formed by two N atoms from the triazole rings of two symmetry-related btre ligands and two iodide ligands.

Methylammonium lead iodide perovskite (CH3NH3PbI3) plays an important role in light absorption and carrier transport in efficient organic-inorganic perovskite solar cells. In this Letter, we report the first theoretical estimation of effective masses of photocarriers in CH3NH3PbI3. Effective masses of photogenerated electrons and holes were estimated to be me* = 0.23m0 and mh* = 0.29m0, respect...

A total of 24 patients with a mean age of 45.8 +/- 20.8 were included in the study. The patients were grouped as Control (C), Degenerative Syndromes (DS), Degeneration Associated with External Factors (DEF), Degeneration Associated with Focal Neurologic Lesion (DFN) and Demyelinating Disease (DM). Imaging started 15 minutes for early and 4 hours for delayed scans after i.v. infusion of I-123 IM...