Dielectric Measurements at High Pressures and Low Ternperatures V. Dielectric and pVT data of <i>t</i>-Butylchloride

Wilmers, Jana; Briese, M.; Würflinger, A.

doi:10.1080/00268948408070442

Cited by 20 publications

(24 citation statements)

References 13 publications

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“…Values about unity for g discount specific correlations in TBN, in agreement with previous findings on other tertiary butyl compounds (TBC1 [26] and TBBr [27]), and on cyclohexanone [23]. P,V,T-data [5,17] enable us to distinguish between isochoric temperature changes and isothermal density changes, which is one of the principal advantages of high pressure studies [13].…”

Section: Dielectric Measurementssupporting

confidence: 86%

Differential Thermal Analysis and Dielectric Studies on 2-Methyl-2-Nitro-Propane under High Pressure

Büsing¹,

Jenau²,

Reuter³

et al. 1995

Zeitschrift Für Naturforschung A

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Differential thermal analysis and dielectric studies under pressures up to 300 MPa and temperatures of about 200 to 350 K have been performed on 2-methyl-2-nitro-propane (TBN). TBN displays an orientationally disordered phase (ODIC), solid I, and two non-plastic phases, solids II and III. The coexistence region of the plastic phase I increases with increasing pressure, whereas the low-temperature phase II apparently vanishes at a triple point I, II, III, above 300 MPa. The static permittivity increases on freezing, characterizing the solid I as an ODIC phase. In the frame of the Kirkwood-Onsager-Fröhlich theory the g-factor is about unity, discounting specific dielectric correlations. The dielectric behaviour of TBN is similar to previously studied related compounds, such as 2-chloro-2-methyl-propane or 2-brome- 2-methyl-propane

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Section: Dielectric Measurementssupporting

confidence: 86%

Differential Thermal Analysis and Dielectric Studies on 2-Methyl-2-Nitro-Propane under High Pressure

Büsing¹,

Jenau²,

Reuter³

et al. 1995

Zeitschrift Für Naturforschung A

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“…Such values match quite well with previously reported values [3,7,12,[18][19][20][21]. From DSC measurements the temperatures of the two-phase equilibria involving OD phases have also been obtained.…”

Section: Thermal Analysissupporting

confidence: 82%

“…3), v R (0.1 MPa, 215.2 K) = 92.22 ± 0.10 cm 3 mol À1 , the difference being smaller than 2.5% despite the difference in the temperatures at which they are obtained. Finally, it should be mentioned that the orientationally disordered character of the high-pressure R phase of CCl(CH 3 ) 3 was clearly evidenced throughout the high values of the static permittivity [21].…”

Section: Discussionmentioning

confidence: 97%

“…First, the previously reported topological phase diagram of CCl(CH 3 ) 3 reported a value of 208.7 K for the triple point [R + FCC + vapor], which corresponds to the normal pressure transition point from R to FCC. Second, Wilmers et al [21] determined some volume changes at the R (called phase IV in that work) to FCC transition as a function of pressure. By extrapolating such set of values at normal pressure (see Table III v FCC (0.1 MPa, 208 K) = 96.28 ± 0.05 cm 3 mol À1 .…”

Section: Discussionmentioning

confidence: 99%

“…1d, such a phase makes its real appearance at high-pressure [8,10]. Finally, CCl(CH 3 ) 3 seems to be the exception because until present no OD R phase has been reported [19][20][21]. On decreasing temperature, the OD FCC phase transforms to a tetragonal (P4/nmm) phase (hereinafter called T) which at lower temperature transforms to a monoclinic (P2 1 /m) phase [4,19].…”

Section: Introductionmentioning

confidence: 98%

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Connecting the normal pressure equilibria of the two-component system CCl(CH3)3+CBrCl3 to the pressure–temperature phase diagrams of pure components

Tamarit¹,

Céolin²,

Pardo³

et al. 2009

Chemical Physics

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Dielectric Measurements at High Pressures and Low Temperatures VIII: Dielectric and Thermodynamic Properties of Cycloheptanol

Poser

Schulte

Würflinger

1985

Ber Bunsenges Phys Chem

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The thermodynamic and dielectric behaviours of liquid and solid cycloheptanol have been investigated using differential thermal analysis and capacitance measurements up to 10 MHz. The phase behaviour has been studied between 80 and 340 K and pressures up to 300 MPa. The well‐known phase transformations at 1 atm have also been observed at elevated pressures that enables to calculate the associated volume changes. The static and complex permittivities have been determined in the temperature range 240–310 K and pressures up to 300 MPa. Activation parameters derived from the dielectric relaxation occurring in the two plastic phases are similar to previously reported data for cyclopentanol and cyclohexanol.

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Dielectric Measurements at High Pressures and Low Ternperatures V. Dielectric and pVT data of t-Butylchloride

Cited by 20 publications

References 13 publications

Differential Thermal Analysis and Dielectric Studies on 2-Methyl-2-Nitro-Propane under High Pressure

Differential Thermal Analysis and Dielectric Studies on 2-Methyl-2-Nitro-Propane under High Pressure

Connecting the normal pressure equilibria of the two-component system CCl(CH3)3+CBrCl3 to the pressure–temperature phase diagrams of pure components

Dielectric Measurements at High Pressures and Low Temperatures VIII: Dielectric and Thermodynamic Properties of Cycloheptanol

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