Crystal Structure of Rutherfordine, UO
            <sub>2</sub>
            CO
            <sub>3</sub>

Christ, C. L.; Clark, Joan R.; Evans, Howard T.

doi:10.1126/science.121.3144.472

Cited by 69 publications

(51 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, no structural relation between rutherfordine, blatonite and joliotite was observed. Christ et al [9] showed that the structure consists of sheets of (CO 3 ) 2− groups lying parallel in a plane perpendicular to the b axis, with linear (UO 2 ) 2+ groups inserted into hexagonal holes normal to the sheets. A stacking disorder is present, involving the choice of parallel or antiparallel orientation of (CO 3 ) 2− groups in adjacent sheets.…”

Section: Introductionmentioning

confidence: 99%

“…A stacking disorder is present, involving the choice of parallel or antiparallel orientation of (CO 3 ) 2− groups in adjacent sheets. [9] Finch et al [5] refined the structure of rutherfordine. They showed that (CO 3 ) 2− groups in alternate layers have the same orientation, not opposite orientations as originally reported by Christ et al [9,10] Topology of uranyl layers arrangement in rutherfordine was discussed by Burns.…”

Section: Introductionmentioning

confidence: 99%

“…[9] Finch et al [5] refined the structure of rutherfordine. They showed that (CO 3 ) 2− groups in alternate layers have the same orientation, not opposite orientations as originally reported by Christ et al [9,10] Topology of uranyl layers arrangement in rutherfordine was discussed by Burns. [4,11] The infrared spectra of rutherfordine and its synthetic analogues has been published.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Raman spectroscopic study of the uranyl mineral rutherfordine—revisited

Frost

Čejka

2009

J Raman Spectroscopy

View full text Add to dashboard Cite

The molecular structure of the uranyl mineral rutherfordine has been investigated by the measurement of the near-infrared (NIR) and Raman spectra and complemented with infrared spectra including their interpretation. The spectra of rutherfordine show the presence of both water and hydroxyl units in the structure as evidenced by IR bands at 3562 and 3465 cm −1 (OH) and 3343, 3185 and 2980 cm −1 (H 2 O). Raman spectra show the presence of four sharp bands at 3511, 3460, 3329 and 3151 cm −1 . Corresponding molecular water bending vibrations were only observed in both Raman and infrared spectra of one of two studied rutherfordine samples. The second rutherfordine sample studied contained only hydroxyl ions in the equatorial uranyl plane and did not contain any molecular water. The infrared spectra of the (CO 3 ) 2− units in the antisymmetric stretching region show complexity with three sets of carbonate bands observed. This combined with the observation of multiple bands in the (CO 3 ) 2− bending region in both the Raman and IR spectra suggests that both monodentate and bidentate (CO 3 ) 2− units may be present in the structure. This cannot be exactly proved and inferred from the spectra; however, it is in accordance with the X-ray crystallographic studies. Complexity is also observed in the IR spectra of (UO 2 ) 2+ antisymmetric stretching region and is attributed to non-identical UO bonds. U-O bond lengths were calculated using wavenumbers of the ν 3 and ν 1 (UO 2 ) 2+ and compared with data from X-ray single crystal structure analysis of rutherfordine. Existence of solid solution having a general formula (UO 2 )(CO 3 ) 1−x (OH) 2x .yH 2 O (x, y ≥0) is supported in the crystal structure of rutherfordine samples studied. Copyright

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Raman spectroscopic study of the uranyl mineral rutherfordine—revisited

Frost

Čejka

2009

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…Tb.e data obtained from the ·pattern are given in table 2, together with the ;!-spacings and Miller indices calculated from the results obtained in the previous single crystal study (Christ et al, 1955 Christ et al", 1955-) …”

Section: Powder Diffraction Datamentioning

confidence: 99%

“…In general it is found :Eor biaxial crystals trre.t two higher indices, close in value, correspond to vibration directions parallel to the layers, while a lower index occurs for the vibration direction normal to the layers~ Such crystals con ... sequently are biaxial negative with moderate to large birefringence~ Examples are aragonite with a-= 1,.530, t3 = 1~681, 7 = 1 .. 686, and KN0 3 with a = 1.335, fi3 = 1.506, and 7 = 1.506 (Bunn, 1946, p. two bonds normal to the plane with U-0 11 (Cromer and Harper, 1955b The values of the six U-0 bond lengths were not determined directly (Christ et al, 1955) but wer:e based on the assumption of an eq,uilateral triangular carbonate ion with C-0 bond lengths of 1.25 A (Brown, Peiser, and Turner-.Jones, 1949). Confirmation of the validity of this assumption follows from the work of Cromer and Harper ( 1955b).…”

Section: Refractive Indices Al\i'"d Crystal S~~ucturementioning

confidence: 99%