摘要:

Prompted by the work of Kim & co. on electrons interacting with water hexamer clusters of different geometries [Phys. Rev. Lett.,76, 956 (1996)], we have analyzed data for electron binding by water and ammonia clusters of various sizes [Haberland & co. 1991, Jortner & co. 1988]. Three regimes of cluster sizes are delineated. I: large clusters containingn≳ 300 molecules, which join the cluster regimes to the liquid phase, and which completely encompass the wave function of the excess electron. II: intermediate clusters with 300 <n≳ 20, which internally contain most but not all of the wave function of the excess electron. III: small clusters withnmax⩾n⩾nmin, on which the excess electron is bound to polar hydrogens that project from the surface of the cluster and for which the electron binding energy is very sensitive to the molecular arrangement in the cluster.

ISSN:0031-9104    

DOI:10.1080/00319109608039814

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The high electric field saturation drift velocityvsatof electrons in liquid xenon near the triple point is 3 × 103m/s. This value is recovered if (Vsatd) κsatτsat=D. HereDis the self-diffusion coefficient of liquid xenon, τsatis the lower limit of phonon oscillation periods, and κsatis an electron energy-loss probability characteristic of scattering of field-driven electrons by the atoms of the liquid medium.

ISSN:0031-9104    

DOI:10.1080/00319109608039815

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The1H-NMR spectra of liquid binary mixtures of dimethyl sulfoxide (DMSO) and 1-propanol (PrOH), were recorded at 298 K over almost the whole range of the mixed solvent compositions. From these data were found the values of the spectral parameter, Δδ(DMSO-PrOH). The densities (d12) and viscosities (η12) of the mixed solvent were measured at 298.15 K, as well as the relative permittivities (ε12) at 293.15 K, 298.15 K and 303.15 K. From all these data, the molar volumes (V12) and their deviations from ideality were calculated. Additionally, the temperature coefficients of relative permittivity, α12, were found. These structural parameters of functions of concentration suggest the formation of stable DMSO-PrOH, DMSO-2PrOH and DMSO-3PrOH type complexes.

ISSN:0031-9104    

DOI:10.1080/00319109608039816

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The1H-NMR spectra of liquid binary mixtures of glycerol (PT-1,2,3) and formamide (F) were recorded at 298 K over almost the whole range of the mixed solvent compositions. From these data were found the values of the spectral parameter, Δδ(F-PT-1, 2,3). The densities (d12), viscosities (η12) and relative permittivities (ε12) were measured at 288.15K, 293.15K, 298.15K and 303.15K. From all these data, the molar volumes (V12) and their deviations from ideality were calculated. Additionally, the temperature coefficients of relative permittivity, α12= (1/ε12).[dε12/d(1/T)], were found. These structural parameters of functions of concentration suggest the formation of stable F-PT-1,2,3 and F-2PT-1,2,3 type complexes.

ISSN:0031-9104    

DOI:10.1080/00319109608039817

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Molar refraction of pure liquids has been calculated for well over a thousand substances, from an evaluated set of atomic and structural contributions. On an overall basis, the calculated values are in agreement with the experimental data, showing an average absolute deviation of 0.6%, and an average of maximum deviations of 2.1%. The effect of temperature on molar refraction has also been studied and found to show an average absolute deviation of 0.8%.

ISSN:0031-9104    

DOI:10.1080/00319109608039818

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Experimental solubilities are reported at 25.0 °C for benzil dissolved in twenty three different organic nonelectrolyte solvents containing ester–, ether–, chloro–, hydroxy– and methyl–functional groups. Results of these measurements combined with our previously published benzil solubility data in benzene, toluene, dibutyl ether, carbon tetrachloride and saturated hydrocarbons, are used to test the applications and limitations of expressions derived from Mobile Order theory. For the 30 solvents for which predictions could be made computations show that Mobile Order theory does provide fairly reasonable (although by no means perfect) estimates of the saturation mole fraction solubilities. Average absolute deviation between predicted and observed values is circa 31%. In comparison, the average absolute deviation increases significantly to 1500% when ideal solution behavior is assumed.

ISSN:0031-9104    

DOI:10.1080/00319109608039819

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The cross-over from hydrodynamic to fast sound in water at 5 C has recently been mapped experimentally by means of inelastic X-ray scattering. We show that a viscoelastic model gives a good account of both the longitudinal-current autocorrelation function and the dynamic structure factor in the region of the cross-over. Evidence is also given for a weakly dispersing excitation observed in these experiments being a liquid state remnant of an oxygen-related optic mode in ice.

ISSN:0031-9104    

DOI:10.1080/00319109608039820

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0031-9104    

DOI:10.1080/00319109608039813

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor