Units dipole moment, Debye

Oxadiazole Dipole moment (Debye units) Method... 

Dipole Moments (Debye Units) in Purine Tautomers... 

The magnitude fi of a dipole moment is usually quoted in Debye units. Dipole moments are products of charges and their separations so that, for charges of —q and +q separated by a distance r,... 

Displacements in units of a. Positive values indicate movements in direction of outward normal. Direction and magnitude of dipole moments (debye units) indicated by arrows. For negative ions length of arrow corresponds to one tenth of dipole moment... 

Table VI - Computed dipole moments debye units) and energy balances for different forming reactions for HCS and HSC. ...

Pyrazine forms an azeotrope with water [60% pyrazine-40% water, b.p. 95.5° (uncorr.) (760mmHg) /ip 1.4510] (578). A method of assay for pyrazine and some common impurities has been developed (579). The dipole moment (Debye units) of pyrazine has been determined in dioxane, cyclohexane, and benzene as zero (580, cf. 581) and it has also been calculated as zero (133, 582). The e.s.r. spectrum (583) and the polarized single-crystal absorption spectra of pyrazine (and tetramethylpyrazine) (584) have been recorded. The photoelectron spectra of pyrazine and tetramethylpyrazine have been determined and suggest a different behavior towards electrophilic attack in the two cases (585). 

Dipole Moments (Debye Units) of 2-SuBsmvrBD Derivatives of Furan, Thiophene, Sblenophene, and Tellurophbne in Benzene... 

Table 10 MM3 calculated and experimental dipole moments (Debye units). ...

The distance the charges are separated from each other is the dipole moment which is measured in units of debyes (D). In a molecule like water, H2O, the oxygen holds the electrons more tightly causing a polar separation and the dipolar moment is 1.94 D. In SI units, dipole moments are measured in coulomb meters (Cm),... 

Table 3 Comparison of Predicted Root-Mean-Square, dipole moments (debye units) and Corresponding Reduced Limiting Dichroisms, i with Experimental Results Obtained from Electrooptical Relaxation Data and Dielectric Relaxation for a-Chymotrypsin and Sperm Whale Oxymyoglobin ...

Dipole moments (Debye) and Mulliken atomic charges (units of electron) for water, methanol, formic acid and formamide in the gas phase (gas) and in aqueous solution (sol)... 

In stead, the electrostatic con tribn tion conies from definin g a set of bond dipole moments associated woth polar bonds. These bond moments are defined in the m m psir.LxL(dbf) file along with the bond stretching parameters and are given in units of Debyes. The cen ter of th e dipole Is defined to be th e m Idpoint of the bond an d two dipoles p. and pj. separated by Rjj. as shown beltnv ... 

Debye unit (D) (Section 1 5) Unit customanly used for mea sunng dipole moments... 

Dipole moment (Section 1 5) Product of the attractive force between two opposite charges and the distance between them Dipole moment has the symbol p- and is measured in Debye units (D)... 

Figure 4 shows the measured angle of 105° between the hydrogens and the direction of the dipole moment. The measured dipole moment of water is 1.844 debye (a debye unit is 3.336 x 10 ° C m). The dipole moment of water is responsible for its distinctive properties in the Hquid state. The O—H bond length within the H2O molecule is 0.96 x 10 ° m. Dipole—dipole interaction between two water molecules forms a hydrogen bond, which is electrostatic in nature. The lower part of Figure 4 (not to the same scale) shows the measured H-bond distance of 2.76 x 10 ° m or 0.276 nm. 

The dipole moment in Eq. (2-73) is in debyes, while P is in atm and is in K. Units must be watched carefully. For hydrogen-bonding molecules, Eq. (2-71) can be used with a value of Bo calculated by Eq. 

The dipole moment p. is a molecular property defined as the product of charge (usually just a fraction of the electronic change, of course) and distance between the centers of positive and negative charge in the molecule. The dipole moment is usually expressed in debyes (D), where 1 D = 1(T esu in SI units 1 D = 3.3356 X 10 ° C-m. so, for example, the dipole moment of water is 1.84 D or 6.14 in units of 10 C-m. Again a rough correspondence is seen between this property of a molecule and its polarity, though e and p. are not precisely correlated. 

The symbols 5+ and 5- indicate polarity of the two ends or poles of the electrically neutral molecule. Such a polar molecule constitutes a permanent dipole, i.e., two equal and opposite charges (e) separated by a distance (d) in space. A quantitative measure of the polarity of a molecule is the dipole moment (p in Debye units), which is defined as the product of the charge (e in electrostatic units) and the distance (d in cm). 

Dipole Moment. In vapor phase 3.54 debye units (Ref 9)... 

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