Matrix IR spectra of the products from F[sub 2], ClF, and Cl[sub 2] reactions with pulsed-laser evaporated uranium atoms

Journal Article · Wed Jan 19 00:00:00 EST 1994 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00080a031· OSTI ID:5040878

Hunt, R D ^[1]; Thompson, C; Hassanzadeh, P; Andrews, L ^[2]

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1. ORNL, Oak Ridge, TN (United States)
2. Univ. of Virginia, Charlottesville, VA (United States)

Pulsed Nd:YAG laser ablated uranium atoms were codeposited with F[sub 2] and excess Ar onto a CsI window at 12 K. Infrared spectra revealed the presence of several uranium fluorides including the previously characterized UF[sub 4], UF[sub 5], and UF[sub 6]. Lower laser energy favored new absorptions at 400, 446, 496, and 561 cm[sup [minus]1]. These product absorptions increased stepwise during annealings which permitted diffusion and reaction of the fluorine. Similar studies with ClF produced the above absorptions plus a new band at 554 cm[sup [minus]1] which is tentatively assigned to ClF[sub 2][sup [minus]]. The first bands appearing at 400 and 446 cm[sup [minus]1] are assigned to UF and UF[sub 2], respectively. The 496- and 561-cm[sup [minus]1] bands are tentatively assigned to UF[sub 3] and F[sub 3][sup [minus]], respectively. Finally, uranium atoms were reacted with Cl[sub 2]. In addition to several absorptions due to UCl[sub 4], a new doublet at 312 and 308 cm[sup [minus]1] is assigned to UCl[sub 2].

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5040878
• Journal Information: Inorganic Chemistry; (United States), Vol. 33:2; ISSN 0020-1669
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
CHLORINE
CHEMICAL REACTIONS
FLUORINE
URANIUM CHLORIDES
URANIUM FLUORIDES
ABSORPTION SPECTROSCOPY
MATRIX ISOLATION
VIBRATIONAL STATES
ACTINIDE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
NONMETALS
SPECTROSCOPY
URANIUM COMPOUNDS
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials