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Sevil İrişli Selmin Yanar Orhan Büyükgüngör 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2036-2044
The PPh2P(S)NHP(S)PPh2 (dppaS2) ligand reacts with the starting complexes PtCl2(L-L) (L-L = Ph2PCH2PPh2), (dppm), Ph2PCH2CH2PPh2 (dppe), Ph2PCH2CH2CH2PPh2 (dppp), and NaClO4·H2O. Final products are monomeric complexes, and their formulas are [Pt(L-L)(dppaS2-H)] [(L-L = dppm(1), dppe(2), dppp(3)]. All of these have been characterized by 1H, 13C,31{P1H} NMR, FTIR, and elemental analysis. These complexes were also examined by TGA, DTA, and DSC analysis. Complexes 2 and 3 were crystallographically characterized. 相似文献
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Creation of fermionic particles by a time-dependent electric field and a space-dependent magnetic field is studied with the Bogoulibov transformation method. Exact analytic solutions of the Dirac equation are obtained in terms of the Whittaker functions and the particle creation number density depending on the electric and magnetic fields is determined. 相似文献
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The reactions of PdCI2(L-L) [L-L = Ph2PCH2PPh2(dppm), Ph2PCH2CH2PPh2(dppe) and Ph2PCH2CH2CH2PPh2(dppp)] with equivalent amount of (Ph2P(S)NHP(S)Ph2)(dppaS2) gave the complexes [Pd(L-L)(dppaS2-H)]ClO4 [L-L = dppm (1), dppe (2), dppp (3)]. The different synthetic route was used for complex 2 by using of Pd(dppe)Cl2 and K[N(PSPh2)2] as starting materials (2a). All of these complexes have been characterized 31P{1H} NMR, IR and elemental analyses. The complexes 2, 2a and 3 were crystallographically characterized. The coordination geometry around the Pd atoms in these complexes distorted square planar. Six membered dppaS2-H rings are twist boat conformations in three complexes. 相似文献
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Laouar Soufiane Yanar Nihat Litvintsova Yu. E. Kuzmenkov D. M. Delov M. I. Kutsenko K. V. 《Physics of Atomic Nuclei》2021,84(9):1531-1535
Physics of Atomic Nuclei - In this paper, we experimentally and theoretically study the effect of external induced convection on heat transfer from horizontal heaters under conditions of pool... 相似文献
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Bound and scattering states for a hyperbolic‐type potential in view of a new developed approximation
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A new developed approximation is used to obtain the arbitrary l‐wave bound and scattering state solutions of Schrödinger equation for a particle in a hyperbolic‐type potential. For bound state, the energy eigenvalue equation and unnormalized wave functions in terms of Jacobi polynomials are achieved using the Nikiforov–Uvarov (NU) method. Besides, energy eigenvalues are calculated numerically for some states and compared with those given in the literature to check accuracy of our results. For scattering state, the wave function is found in terms of hypergeometric functions. Furthermore, scattering amplitude and phase shifts are achieved using scattering solutions. Also it is shown that the energy eigenvalue equation obtained from analytic property of scattering amplitude is same with one obtained using NU method. © 2015 Wiley Periodicals, Inc. 相似文献
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Sonay Yanar Ata Sevim B. Boyacioglu Mesude Saglam Soma Mukhopadhyaya Ashok Chatterjee 《Superlattices and Microstructures》2008
The problem of an electron interacting with longitudinal-optical (LO) phonons is investigated in an N-dimensional quantum dot with symmetric Gaussian confinement in all directions using the Rayleigh–Schrödinger perturbation theory, a variant of the canonical transformation method of Lee–Low–Pines, and the sophisticated apparatus of the Feynman–Haken path-integral technique for the entire range of the coupling parameters and the results for N=2 and N=3 are obtained as special cases. It is shown that the polaronic effects are quite significant for small dots with deep confining potential well and the parabolic potential is only a poor approximation of the Gaussian confinement. The Feynman–Haken path-integral technique in general gives a good upper bound to the ground state energy for all values of the system parameters and therefore is used as a benchmark for comparison between different methods. It is shown that the perturbation theory yields for the ground state polaron self-energy a simple closed-form analytic expression containing only Gamma functions and in the weak-coupling regime it provides the lowest energy because of an efficient partitioning of the Gaussian potential and the subsequent use of a mean-field kind of treatment. The polarization potential, the polaron radius and the number of virtual phonons in the polaron cloud are obtained using the Lee–Low–Pines–Huybrechts method and their variations with respect to different parameters of the system are discussed. 相似文献
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