نتایج جستجو برای: sextet pattern
تعداد نتایج: 348418 فیلتر نتایج به سال:
Photoionization efficiency curves were measured for gas-phase FeO and CuO using tunable vacuum-ultraviolet radiation at the Advanced Light Source. The molecules are prepared using laser ablation of a metal-oxide powder in a novel high-repetition-rate source and are thermally moderated in a supersonic expansion. These measurements provide the first directly measured ionization energy for CuO, IE...
Under oxic conditions, Tc exists as the soluble, weakly sorbing pertechnetate [TcO4-] anion. The reduced form of technetium, Tc(IV), is stable in anoxic environments and is sparingly soluble as TcO2 x nH2O(s). Here we investigate the heterogeneous reduction of Tc(VII) by Fe(II) adsorbed on Al (hydr)oxides [diaspore (alpha-AlOOH) and corundum (alpha-Al2O3)]. Experiments were performed to study t...
Eight new transition metal complexes of benzaldehyde-N(4)-phenylsemicarbazone have been synthesized and characterized by elemental analyses, molar conductance, electronic and infrared spectral studies. In all the complexes, the semicarbazone is coordinated as neutral bidentate ligand. (1)H NMR spectrum of [Zn(HL)(2)(OAc)(2)] shows that there is no enolisation of the ligand in the complex. The m...
The Fe Mössbauer spectroscopy on -iron II phthalocyanine FePc as a function of temperature 1.3 T 295 K and applied field 0 B 10 T has been used to study the peculiar magnetic properties of this ferromagnetic quasilinear chain type compound. One sextet with an internal hyperfine field Bint=66.2 T was observed at 1.3 K, a very large value for a bivalent iron with S=1 pointing to the existence of ...
R. J. Charity, L. G. Sobotka, K. Hagino, D. Bazin, J. Clifford, M. A. Famiano, A. Gade, S. Hudan, S. A. Komarov, Jenny Lee, S. P. Lobastov, S. M. Lukyanov, W. G. Lynch, C. Metelko, M. Mocko, A. M. Rogers, H. Sagawa, 7 A. Sanetullaev, M. B. Tsang, M. S. Wallace, M. J. van Goethem, and A. H. Wuosmaa Departments of Chemistry and Physics, Washington University, St. Louis, Missouri 63130. Department...
the southeastern part of turkey is quite rich, fertile and mature in terms of hydrocarbonseepages. while the use of the related sources meet the energy demand, it damages the environment and humanhealth. in this study, several geochemical methods were applied to analyze the hydrocarbon sepage samplesobtained from seven towns in the province of adiyaman where is very close to the oil production ...
We study the generation of neutrino masses in the SU(3)W electroweak unified theory in M4 × S1/(Z2 ×Z ′ 2) spacetime. By appropriate orbifolding, the bulk symmetry SU(3)W is broken into SU(2)L × U(1)Y at one of the fixed points, where the quarks reside. The leptons form SU(3)W triplets, localized at the other symmetric fixed point. The fermion masses arise from the bulk Higgs sector containing ...
Tropone and its derivatives have fascinated organic chemists for well over 50 years. Early theoretical work suggested that tropone may represent a new type of aromatic system, which would possess resonance stabilization due to fact that it has Huckel’s sextet electron system. Another significant reason for the interest in the ring systems of tropones is that they represent the key structural el...
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