Dipole moment

The microdynamic mechanism of the phenomenon, which the static permittivity of sodium chloride aqueous solution with concentration of 2.8 mol/L holds constant with the change of temperature, is clarified. The equilibrium compensation between the decrement of the permittivity part due to the water molecular polarization and the increase of that originated from the ionic polarization as increasing temperature is responsible for this phenomenon. The dipole moment reduction of water molecules as rising temperature is also confirmed by the model.

6p dianmotminh02 03-05-2024 2 1   Download

Part 1 book "Quantum physics" by author Robert Eisberg includes content: Thermal radiation and Planck's postulate; photons — particlelike properties of radiation; de Broglie's postulate — wavelike properties of particles; Bohr's model of the atom; Schrödinger's theory of quantum mechanics; solutions of time independent Schrödinger equations; one electron atoms; magnetic dipole moments, spin, and transition rates; multielectron atoms — ground states and x-ray excitations.

364p muasambanhan10 06-04-2024 1 0   Download

Part 1 book "Quantum physics of atoms, molecules, solids, nuclei, and particles" includes content: Thermal radiation and Planck's postulate; photons — particlelike properties of radiation; de Broglie's postulate — wavelike properties of particles; Bohr's model of the atom; Schrödinger's theory of quantum mechanics; solutions of time independent Schrödinger equations; one electron atoms; magnetic dipole moments, spin, and transition rates; multielectron atoms — ground states and x-ray excitations.

364p muasambanhan07 18-02-2024 11 1   Download

The photophysical properties of new sulfonamides synthesized recently were investigated in different solvents. Shifts in the absorption and fluorescence spectra of both compounds (S10 and S11) occurred depending on the solvents used. Ground and excited state dipole moments of the molecules were calculated using the spectral shifts of the compounds in different solvents and polarity function of solvents, respectively. They were 1.32 and 1.46 D for S10 and 1.71 and 4.89 D for S11.

12p langthannam 29-12-2021 4 0   Download

Lecture Physical chemistry: Physical properties of drug molecules provide students with knowledge about dielectric constant, induced polarization, dipole moment, refractive index, molar refraction, optical rotatory dispersion,...

39p bachnhuocdong 23-12-2021 16 0   Download

Quantitative structure–activity relationship (QSAR) analysis of 28 quinoline-arylamidine (CQArA) hybrids against two leukemia cells, K562 and Raji, was performed. Multiple linear regression (MLR) models were obtained by genetic algorithm. The best models involved the following descriptors: radial distribution function (RDF) descriptors, GETAWAY (GEometry, Topology, and Atom-Weights AssemblY) descriptor, bond information content index, and dipole moment. The best MLR models for K562 and Raji cells demonstrated satisfactory stability in internal and external validation.

16p tudichquannguyet 29-11-2021 7 1   Download

The (E)-2-(2-hydroxystyryl)quinolin-8-ol (abbreviated as HSQ) molecule was synthesized and characterized. The ESIPT, solvatochromism properties, electronic structure, and ground and excited electric dipole moments of this molecule were measured using absorption and fluorescence spectra recorded in 13 different solvents. Its electronic structure via electronic transitions was investigated to find the quantitative values of solvatochromism properties by LSER calculations. The ESIPT mechanism was clarified; ground and excited dipole moments were determined using solvatochromic shift methods.

19p tudichquannguyet 29-11-2021 6 1   Download

Lecture Basic chemistry: A Foundation - Chapter 11. After studying this section will help you understand: chemical bonding, structure determines properties, ionic bonds, covalent bonds, bond polarity, electronegativity, dipole moment,...

28p diepchilang 26-08-2021 4 1   Download

Lecture General Chemistry 1 - Chapter 9: Molecular Geometries and Bonding Theories. After studying this section will help you understand: predict the three-dimensional shapes of molecules using the VSEPR model; determine whether a molecule is polar or nonpolar based on its geometry and the individual bond dipole moments,...

28p diepchilang 26-08-2021 13 1   Download

This paper show that the recent experimental value of the anomalous magnetic moment (AMM) of the charged lepton µ, denoted as aµ ≡ (g−2)µ /2, can be explained successfully in a 3-3-1 model with right handed neutrinos adding new heavy SU(3)L neutrino singlets. Allowed regions satisfying the recent AMM data are illustrated numerically.

10p nguyenxuankha_bevandan 14-08-2020 9 1   Download

We have investigated the thermodynamic properties of the cubic zirconia ZrO2 using the statistical moment method in the statistical physics. The free energy, thermal lattice expansion coefficient, specific heats at the constant volume and those at the constant pressure, CV and CP , are derived in closed analytic forms in terms of the power moments of the atomic displacements.

16p 12120609 01-06-2020 7 0   Download

Experimental aspect of the corrosion inhibition potential of adenine (AD), guanine (GU) and, hypoxanthine (HYP) was carried out using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods while the theoretical aspect of the work was carried out by calculations of semi-empirical parameters (for AM1, MNDO, CNDO, PM3 and RM1 Hamiltonians), Fukui functions and inhibitor–metal interaction energies.

15p trinhthamhodang1 16-11-2019 18 0   Download

Trong vật chất luôn luôn có sẵn các dipole từ, đó là các dòng điện trong nguyên tử. Thông thường các nguyên tử chuyển động nhiệt hỗn loạn nên các dipole từ này cũng định hướng hỗn loạn và không tạo ra một hiệu ứng từ nào. Tuy nhiên khi đặt vật chất trong một từ trường ngoài thì các dipole này có xu hướng định hướng trật tự theo từ trường, tạo nên một moment dipole từ trung bình khác không, đó là sự từ hoá của vật chất (Hình 1)....

4p phongvan50 13-10-2012 77 7   Download

Orbis Scientiae 1999 constitutes the 28th conference on High Energy Physics and Cosmology that were begun in 1964. It has now become an institution by itself under the aegis of which the physicists convene annually in South Florida. It created a Belle Époque in Coral Gables. The series of Orbis Scientiae started with the participants of highest distinction in physics of the 20th Century. After its first two decades the conferences have been placed in the hands of younger and promising physicists....

253p kinhdo0908 11-10-2012 46 5   Download

Although the infinite array techniques of Chapter 7 are excellent for system trades and preliminary design, final design requires a finite array simulation. Direct impedance (admittance) matrix methods were described in Section 7.3.2. These were developed by Oliner and Malech, 1966a; Galindo, 1972; Bailey, 1974; Bailey and Bostian, 1974; Cha and Hsiao, 1974; Steyskal, 1974; Bird, 1979; Luzwick and Harrington, 1982; Clarricoats et al., 1984; Pozar, 1985, 1986; Fukao et al., 1986; Deshpande and Bailey, 1989; Silvestro, 1989; Usoff and Munk, 1994; and others.

31p huggoo 23-08-2010 77 10   Download