Structure of the basic uranyl salts and polyuranates

Spitsyn, V.I.; Ковба, Л.М.; Tabachenko, V. V.; Tabachenko, N.V.; Mikhaǐlov, Yu. N.

doi:10.1007/bf00950004

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…The correct space-group is C2/m, the structures have a pseudo c-glide, and each crystal studied is twinned. This finding is consistent with the results for a synthetic Zn-dominant zippeite-like phase provided by Spitsyn et al (1982).…”

Section: Solution and Refinement Of The Structuressupporting

confidence: 92%

“…Frondel et al (1976) did not provide any crystal-structure information for these minerals owing to the lack of suitable single crystals. Spitsyn et al (1982) reported the structure of a synthetic material that contains zippeitetype uranyl sulfate sheets with Zn cations in the interlayer, and this may correspond to zinc-zippeite. Vochten et al (1995) gave a structure for synthetic zippeite.…”

Section: (Traduit Par La Rédaction)mentioning

confidence: 99%

“…invariably results in crystals that are too small for singlecrystal X-ray-diffraction studies. Spitsyn et al (1982) synthesized a zippeite-like material containing Zn, but they did not give the method of synthesis. Vochten et al (1995) synthesized zippeite by hydrothermal reaction, and obtained crystals large enough for single-crystal studies.…”

Section: Introductionmentioning

confidence: 99%

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The Crystal Chemistry of the Zippeite Group

Burns¹,

Deely²,

Hayden³

2003

The Canadian Mineralogist

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Single crystals of eight zippeite-group compounds have obtained using mild hydrothermal synthesis techniques. The structure of each has been determined with single-crystal diffraction data collected using MoK␣ X-radiation and an APEX CCD-based detector, and refined on the basis of F 2 for all unique data. The structure of zippeite, K 3 (H 2 O) 3 [(UO 2) 4 (SO 4) 2 O 3 (OH)], is monoclinic, C2, a 8.7524(4), b 13.9197(7), c 17.6972(8) Å, ␤ 104.178(1)°, V 2090.39(17) Å 3 , R1 3.30%, D c 4.794 g/cm 3. The structure of sodium-zippeite, Na 5 (H 2 O) 12 [(UO 2) 8 (SO 4) 4 O 5 (OH) 3 ], is monoclinic, P2 1 /n, a 17.6425(11), b 14.6272(9), c 17.6922(11) Å, ␤ 104.461(1)°, V 4421.0(5) Å 3 , R1 6.88%, D c 4.517 g/cm 3. The structure of magnesium-zippeite, Mg(H 2 O) 3.5 [(UO 2) 2 (SO 4)O 2 ], is monoclinic, C2/m, a 8.6514(4), b 14.1938(7), c 17.7211(9) Å, ␤ 104.131(1)°, V 2110.24(18) Å 3 , R1 2.39%, D c 4.756 g/cm 3. The structure of zinc-zippeite, Zn(H 2 O) 3.5 [(UO 2) 2 (SO 4)O 2 ], is monoclinic, C2/m, a 8.6437(10), b 14.1664(17), c 17.701(2) Å, ␤ 104.041(3)°, V 2102.7(4) Å 3 , R1 4.57%, D c 5.032 g/cm 3. The structure of cobalt-zippeite, Co(H 2 O) 3.5 [(UO 2) 2 (SO 4)O 2 ], is monoclinic, C2/m, a 8.650(4), b 14.252(9), c 17.742(10) Å, ␤ 104.092(19)°, V 2122(2) Å 3 , R1 5.55%, D c 4.948 g/cm 3. The structure of (NH 4) 4 (H 2 O)[(UO 2) 2 (SO 4)O 2 ] 2 is monoclinic, C2/m, a 8.6987(15), b 14.166(2), c 17.847(3) Å, ␤ 104.117(4)°, V 2132.9(3) Å 3 , R1 4.31%, D c 4.442 g/cm 3. The structure of (NH 4) 2 [(UO 2) 2 (SO 4)O 2 ] is orthorhombic, Cmca, a 14.2520(9), b 8.7748(5), c 17.1863(10) Å, V 2149.3(2) Å 3 , R1 5.11%, D c 4.353 g/cm 3. The structure of Mg 2 (H 2 O) 11 [(UO 2) 2 (SO 4)O 2 ] 2 is monoclinic, P2 1 /c, a 8.6457(4), b 17.2004(8), c 18.4642(9) Å, ␤ 102.119(1)°, V 2684.6(2) Å 3 , R1 4.73%, D c 3.917 g/cm 3. Each structure contains the zippeite-type sheet consisting of chains of edge-sharing uranyl pentagonal bipyramids that are cross-linked by vertex sharing with sulfate tetrahedra, although the compositional details of the sheet are varied. The interlayer configurations are diverse, and are related to the bonding requirements of the sheets.

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Section: Solution and Refinement Of The Structuressupporting

confidence: 92%

Section: (Traduit Par La Rédaction)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Crystal Chemistry of the Zippeite Group

Burns¹,

Deely²,

Hayden³

2003

The Canadian Mineralogist

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“…Our recent structure determination of this compound [22] confirmed the formula and the crystallographic parameters given above. Spitsyn et al [23] reported a series of phases with general formula M(UO 2 ) 2 SeO 4 (OH) 4 ·1.5H 2 O (M = Ni, Mg, Co, Mn, Cd). The U:Se ratio of 2:1 and their crystallographic parameters suggest that these phases are probably selenate analogs of uranyl sulfates of the zippeite group [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and crystal structure of Zn2[(UO2)3(SeO4)5](H2O)17

Krivovichev

Kahlenberg

2005

Journal of Alloys and Compounds

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“…However, the X-ray single crystal structure of marecottite, Mg 3 (H 2 O) 18 [9] and the partial structure of pseudojohannite, Cu 6.5 [(UO 2 ) 4 O 4 (SO 4 ) 2 ] 2 ·25H 2 O [10] have been published. Spitsyn et al [11] first presented X-ray single crystal structure of synthetic Zn-zippeite, Zn 3 [(UO 2 ) 6 (SO 4 ) 3 (OH) 12 ]·4.5H 2 O, which may be also written as Zn[(UO 2 ) 2 (SO 4 )(OH) 4 ]·1.5H 2 O.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopic study of the uranyl mineral pseudojohannite Cu_6.5[(UO₂)₄O₄(SO₄)₂]₂(OH)₅·25H₂O

Frost

Plášil

Čejka

et al. 2009

J Raman Spectroscopy

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Raman spectra of pseudojohannite were studied and related to the structure of the mineral. Observed bands were assigned to the stretching and bending vibrations of (UO 2 ) 2+ and (SO 4 ) 2− units and of water molecules. The published formula of pseudojohannite is Cu 6.5 (UO 2 ) 8 [O 8 ](OH) 5 [(SO 4 ) 4 ]·25H 2 O. Raman bands at 805 and 810 cm −1 are assigned to (UO 2 ) 2+ stretching modes. The Raman bands at 1017 and 1100 cm −1 are assigned to the (SO 4 ) 2− symmetric and antisymmetric stretching vibrations. The three Raman bands at 423, 465 and 496 cm −1 are assigned to the (SO 4 ) 2− ν 2 bending modes. The bands at 210 and 279 cm −1 are assigned to the doubly degenerate ν 2 bending vibration of the (UO 2 ) 2+ units. U-O bond lengths in uranyl and O-H· · ·O hydrogen bond lengths were calculated from the Raman and infrared spectra.

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Structure of the basic uranyl salts and polyuranates

Cited by 8 publications

References 6 publications

The Crystal Chemistry of the Zippeite Group

The Crystal Chemistry of the Zippeite Group

Synthesis and crystal structure of Zn2[(UO2)3(SeO4)5](H2O)17

Raman spectroscopic study of the uranyl mineral pseudojohannite Cu_6.5[(UO₂)₄O₄(SO₄)₂]₂(OH)₅·25H₂O

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Structure of the basic uranyl salts and polyuranates

Cited by 8 publications

References 6 publications

The Crystal Chemistry of the Zippeite Group

The Crystal Chemistry of the Zippeite Group

Synthesis and crystal structure of Zn2[(UO2)3(SeO4)5](H2O)17

Raman spectroscopic study of the uranyl mineral pseudojohannite Cu6.5[(UO2)4O4(SO4)2]2(OH)5·25H2O

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Raman spectroscopic study of the uranyl mineral pseudojohannite Cu_6.5[(UO₂)₄O₄(SO₄)₂]₂(OH)₅·25H₂O