High-priced coating devices limit producing electronic and circuit applications widely in laboratories. Simply In this study spin technique was used to create surface thin films. Also with method, an OLED(Organic Light Emitting Diode) device practically produced. OLED includes mainly HTL(hole transfer layer), fluorescent layer(light-emitting ETL(electron layer). Light-emitting layers experiment...

In the crystal structure of the title compound, C(12)H(26)N(2)O(4) (2+)·2(Br(0.085)Cl(0.915))(-)·4C(5)H(9)OH, the complete cation is generated by crystallographic twofold symmetry. Contamination of the chloride counter-anion with bromide occured during the preparation, due to the use of 1,2-dibromo-ethane. One of the solvent mol-ecules is disordered, with occupancies 0.53 (3):0.47 (3). The crys...

In the title compound, C(16)H(14)Br(2)S(2) [systematic name: 1(2),5(2)-dibromo-2,7-dithia-1,5(1,4)-dibenzenaocta-phane], the cen-troids of the two benzene rings are separated by 3.313 (5) Å. The crystal packing exhibits weak inter-molecular S⋯S contacts of 3.538 (2) Å.

Protection of ground water for present and future use requires monitoring and understanding of the mechanisms controlling long-term quality of ground water. In this study, spatial and temporal trends in concentrations of nitrate and pesticides in ground water in the eastern San Joaquin Valley, California, were evaluated to determine the long-term effects of agricultural and urban development on...

The objectives of this review are to summarize existing information on the occurrence of pesticides In groundwater and processes resulting in their detection; to identify existing technologies, and to describe missing information needed to make assessments arid predictions. Validated data on the occurrence of pesticides in groundwater are still limited. Pesticides can reach groundwater followin...

Three experiments on the control of nematodes in sugarcane fields are described and res+ults based on yield responses and nematode numbers are quoted. Meloidogyne practically disappeared when the grass, Erugrostis curvula was grown for three seasons, but increased when tomatoes and beans were groyn. Yield responses to nematocides in the absence of Meloidogyne show that this is not the only nema...

Do not rely on the widely accepted rule that vicinal, sp(3)-positioned protons in cyclopentene moieties should always have more positive (3) J NMR coupling constants for the cis than for the trans arrangement: Unrecognized exceptions might misguide one to wrong stereochemical assignments and thence to erroneous mechanistic conclusions. We show here that two structurally innocent-looking 2,3-dib...

In the title mol-ecule, C(19)H(18)Br(4)N(2)O(2), the dihedral angle between the benzene rings is 73.9 (2)°. Two intra-molecular N-H⋯O hydrogen bonds make S(6) ring motifs. In the crystal, mol-ecules are linked via C-H⋯O inter-actions, forming chains propagating along the a-axis directon. A short C⋯Br [3.401 (5) Å] contact is present in the crystal structure, which is further stabilized by a π-π...

Abstract The structures of the isomeric 2,5-dihydrothiophene 1,1-dioxide [orthorhombic, a = 11.340(2), b 7.0887(15), c 6.2811(13) Å, space group Pnma ] and 2,3-dihydrothiophene 6.3903(13), 7.2783(16), 11.075(2) have been determined show perfectly planar rings with expected bond lengths angles. In contrast, halogenated derivatives 3,3,4,4-tetrachlorotetrahydrothiophene [monoclinic, 11.8716(8), 6...