A transimpedance circuit for use with selenium photoelectric cells

Quantum chemical calculations of77Se and125Te nuclear magnetic resonance spectral parameters and their structural applications

“…Lounila et al [156] performed a work of such type. Comparative theoretical and experimental studies of 13 C and 77 Se nuclear magnetic shielding constants and their rovibrational corrections in the carbon diselenide CSe 2 , a challenging molecule, were carried out at different levels of nonrelativistic theory such as the CHF, the multiconfiguration self-consistent field (MCSCF), and DFT. The DFT calculations were performed using both the local density approximation LDA [197] and two gradient corrected exchange-correlation functionals, BLYP [169,187] and BPW91.…”

“…This method scales as N 5 , like the original SOPPA method, but, in general, performs better than SOPPA. That was established in the paper [300] on the example of SSCCs involving 1 H, 13 C, 15 N, 17 O, 19 F nuclei in a wide series of compounds with different hybridizations and chemical environments for the nuclei of interest. Overall, SOPPA and its modifications have been extensively used in the nonrelativistic calculations of selenium SSCCs by a great number of explorers.…”

“…[322] Selanyl sulfides represent an important class of organic compounds that exhibit high biological activities including anticancer properties. A stereochemical structure investigation of nine synthesized earlier unknown Z-2-(vinylsulfanyl)ethenylselanyl sulfides 34-42 (Chart 5) has been performed by Rusakov et al [328] by means of experimental measurements and SOPPA calculations of their 1 H-1 H, 13 C-1 H, and 77 Se-1 H SSCCs.…”

“…The QC calculations of selenium SSCCs at the fourcomponent level of relativistic theory A systematic theoretical study of the relativistic effects on selenium SSCCs started from the series of works by Rusakov et al, [368,369] where the manifestation of relativistic effects was investigated on the example of 77 Se- 13 C SSCCs. In a previous work, [368] one-bond 77 Se- 13 The 1 J(Se,C) SSCCs in the series of compounds 19, 20, 23, 25, and 51-59 were calculated at the SOPPA(CC2) level using aug-cc-pVTZ-J basis set on selenium and the coupled carbon, and Dunning's cc-pVDZ basis set on the rest of atoms. The authors found that, in average, the SOPPA(CC2) method underestimates the values by as much as 30% against the experiment.…”

“…[2][3][4][5][6][7][8][9][10] Biochemical applications of tellurium compounds have received less attention than that of selenium compounds, in particular, due to their acute and chronic toxicity at low concentrations. [11,12] Selenium and tellurium compounds have also found their applications in many industrial fields, such as photoelectronics, [13][14][15] solar cells technology, [16] semiconductors industry, [17] nanotechnology, [18,19] and many others. [20] Chemistry of selenium and tellurium becomes more and more important in contemporary material science, synthesizing an increasing number of seleniumand tellurium-containing compounds.…”