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An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
High performing planar-type perovskite solar cells and mini-modules are fabricated by incorporating passivated tin oxide based on non-colloidal acetylacetonate precursors.
The asymmetric unit of the diamine compound, C(18)H(14)F(3)N(2)O(2)S(2), consists of two mol-ecules; the C=C double bond has a Z configuration in the C(4)H(3)S-C=C-C(=O)-C segment. The -NH-CH(2)-CH(2)-NH chain adopts a twisted U-shape. The amino group is an intra-molecular hydrogen-bond donor to the carbonyl group; the intra-molecular hydrogen bond generates a six-membered ring. In both mol-ecules, the thienyl rings are disordered over two positions; the occupancies of the major components are 0.817 (4) and 0.778 (4) in one mol-ecule and 0.960 (4) and 0.665 (4) in the other. One of the trifluoro-methyl groups is disordered over two positions with the major component having 0.637 (8) occupancy.
In the mol-ecule of the title compound, C(21)H(16)N(2)O(2), the tetra-hydro-benzo[h]quinoline fused-ring system is buckled owing to the ethyl-ene -CH(2)CH(2)- fragment, the benzene ring and the pyridine ring being twisted by 19.7 (1)°. The 4-substituted aromatic ring is bent away from the pyridine ring by 50.3 (1)° in order to avoid crowding the cyanide substituent. In the crystal, two mol-ecules are linked by a pair of N-H⋯O hydrogen bonds to form a centrosymmetric dimer.
A closely interconnected network of MoP nanoparticles (MoP-CA2) with rich nano-pores, large specific surface area, and high conductivity can function as a highly active non-noble metal catalyst for electrochemically generating hydrogen from acidic water. The network exhibits nearly 100% Faradaic efficiency and needs overpotentials of 125 and 200 mV to attain current densities of 10 and 100 mA cm(-2) , respectively. The catalytic activity is maintained for at least 24 h.
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
1,3-Diethyl-2-thio-barbituric acid reacts with 2,5-dimethoxy-benzaldehyde to form the title Knoevenagel product, C(19)H(22)N(2)O(4)S. In the compound, the two six-membered rings at either end of the three-membered -CHCHCH- chain are nearly coplanar with this fragment (r.m.s. deviation of the two six-membered rings and the three chain atoms = 0.08 Å).
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
The development of high-efficiency non-noble-metal hydrogen evolution reaction (HER) electrocatalysts operating at all pH values is highly desired but still remains a challenge. In this letter, we report on developing tungsten phosphide submicroparticles as a high-efficiency HER catalyst with high durability for electrochemical hydrogen generation in acidic water. This catalyst shows a low onset overpotential of 54 mV, a Tafel slope of 57 mV/dec, an exchange current density of 0.017 mA/cm2, and nearly 100% Faradaic efficiency. It needs overpotentials of 115 and 161 mV to afford current densities of 2 and 10 mA/cm2, respectively. Moreover, this catalyst is also good in activity and durability under neutral and basic conditions.
The exocyclic C=C double-bond in the title compound, C(11)H(12)OS, has an E configuration. The methyl-bearing C atom in the cyclo-pentane ring is disordered over two positions with a site-occupation factor of 0.899 (8) for the major occupied site.
For the first time we demonstrate the topotactic synthesis of a three-dimensional (3D) interconnected network of nanoporous CoP nanowires directly on a Ti substrate (np-CoP NWs/Ti) via low-temperature phosphidation of a Co2(OH)2(CO3)2/Ti precursor and its further use as a highly efficient hydrogen evolution cathode.
A simple and sensitive spectrophotometric method has been proposed for the determination of flutamide (FLD). The method is based on its complexation and oxidation of FLD by Fe3+ and 1,10-phenanthroline. Two sets of condition were established. In the first set only FLD reacted with Fe3+ ion, while in the second one FLD was oxidized by Fe3+ in the presence of 1,10-phenanthroline. The complexation and oxidation methods were monitored spectrophotometrically. All variables affecting the development of the color were investigated and the conditions obeying Beer’s law were optimized. Plots of absorbance against concentration in both methods were rectilinear over the ranges 0.5–10 and 0.5–1.5 μg mL−1, with mean recoveries of 99.51 and 99.83 for methods A and B respectively. The limits of detection for procedures 1 and 2 are 0.332 and 0.726 μg mL−1 1, respectively. Both the methods were successfully applied for the determination of the FLD in its dosage form.
The nine-membered fused-ring system of the title pyridazine derivative, C(7)H(7)N(3)OS, is almost planar (r.m.s. deviation 0.012 Å). In the crystal, the amino H atom forms a hydrogen bond to the ketonic O atom of a neighboring mol-ecule to generate a centrosymmetric dimer.
