Browsing Chemistry by Issue Date
Now showing items 1-20 of 235
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Deductions about the Structure of Phase-Iii from Thermodynamic Measurements on Solid Isotopic Methanes
(1979)No abstract available. -
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Phase-III of Cd4 - Reconciliation of Inelastic Neutron-Scattering and Heat-Capacity Measurements of Rotational Tunneling Levels
(1982)No abstract available. -
Energetics of Long Alkyl Chains Embedded in a Crystalline Matrix - (Normal-C18h37nh3)2cdcl4
(1984)No abstract available. -
Phase transitions in metal perchlorate hydrates: the supposed hydrate-to-pseudohydrate transformations.
(1984)A polemic. The hydrate-to-pseudohydrate transformations in metal perchlorate hydrates reported by M. B. Patel and H. D. Brist (ibid. 1983, 79, 4489) and Solid State Commun. (48, 139 (1983)) as well as the suggested ... -
Calorimetric, Spectroscopic, and Structural Studies of Anhydrous Zinc Bromide
(1984)No abstract available. -
Neutron-Scattering Spectra from the Hindered Rotation of Methane in Methane + Krypton Mixtures Adsorbed on Graphite
(1985)No abstract available. -
A study of phase transitions in cadmium perchlorate hexahydrate (Cd(ClO4)2.6H2O) by adiabatic calorimetry and infrared spectroscopy.
(1985)A calorimetric study of Cd(ClO4)2.6H2O from 20 to 345 K shows 3 phase transformations, at 124.8, 238.45, and 271.62 K. IR spectra indicate that the low-temp. structure (below 124.8 K) contains 1 type of [Cd(OH2)6]2+, of ... -
The nature of ammonium ion disorder in ammonium tetrafluoroaluminate, NH4AlF4.
(1985)To clarify previous conflicting reports concerning the existence of an order-disorder phase transition in NH4AlF4 at T ?150 K, the heat capacity of this compd. was measured from T = 15 to 305 K, by adiabatic calorimetry. ... -
A calorimetric investigation of the low-temperature phase transition in sodium hydroxide-d.
(1986)The heat capacity of NaOD from 20 to 350 K is reported. An anomaly centered at 153.2 ± 0.1 K (?H = 131.1 ± 0.7 J/mol, ?S = 0.864 ± 0.005 J/K.mol) corresponds to the onset of a low-temp. antiferroelec. phase. This ... -
Phase transitions in M(ClO4)2.6H2O (M = magnesium, zinc). Investigations by adiabatic calorimetry and infrared spectroscopy.
(1986)IR spectra of Mg(ClO4)2.6H2O at 10 K indicate a complex structure contg. at least 16 distinct types of H2O protons. At 107.9 K this structure transforms sharply to a much simpler disordered form (?Strans = 7.754 J K-1 ... -
Phase-Transitions in Mg(ClO4)2.6H20, Zn(ClO4)2.6H2O - Investigations by Adiabatic Calorimetry and Infrared-Spectroscopy
(1986-03)No abstract available. -
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Automated, small sample-size adiabatic calorimeter.
(1987)An automated adiabatic calorimeter is described with an internal vol. of 5 cm3, operable at 30-380 K. One of the main advantages of this calorimeter over others in use is the shorter down time during sample changes, due ... -
Thermodynamic Characterization of the Low-Temperature Phase-Transformations in Koh and Kod
(1988-10)No abstract available.