X-ray diffraction study of liquid n -butane at 140 and 267 K

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.456810· OSTI ID:5373481

Habenschuss, A; Narten, A H ^[1]

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1. Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (US)

X-ray diffraction data for liquid {ital n}-butane near the triple and boiling points are presented. The data are analyzed using scattering factors for {minus}CH{sub 3} and {minus}CH{sub 2} groups which permits extraction of structure and distribution functions for carbon sites. An intramolecular carbon--carbon distance at approximately 3.1 A is assigned to a short end-to-end distance in a near-{ital gauche} conformation, which is in agreement with the electron diffraction results for gaseous {ital n}-butane. The intermolecular pair distribution functions show a large difference in the liquid structure for the low and high temperature states, similar to that found in liquid propane.

• DOE Contract Number: AC05-84OR21400; AC05-76OR00033
• OSTI ID: 5373481
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 91:7; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
BOILING POINTS
BUTANE
COHERENT SCATTERING
DIFFRACTION
DISTRIBUTION FUNCTIONS
FLUIDS
FUNCTIONS
HYDROCARBONS
LIQUIDS
LOW TEMPERATURE
MEDIUM TEMPERATURE
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
STRUCTURE FACTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TRIPLE POINT
X-RAY DIFFRACTION