K5(UO2)2[Si4O 12(OH)]: A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds

Chih Shan Chen; Hsien Ming Kao; Kwang Hwa Lii

doi:10.1021/ic0487880

K₅(UO₂)₂[Si₄O ₁₂(OH)]: A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds

Chih Shan Chen, Hsien Ming Kao, Kwang Hwa Lii

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

A new uranium(VI) silicate, K₅(UO₂) ₂[Si₄O₁₂(OH)], has been synthesized by a high-temperature, high-pressure hydrothermal method. It crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 13.1274(7) Å, b = 12.2635(7) Å, c = 22.233(1) Å, and Z = 8. Its structure consists of unbranched chains of four silicate tetrahedra extending along the b axis linked together via corner-sharing by UO₆ tetragonal bipyramids to form a 3-D framework, which delimits intersecting channels along the c and b axes to accommodate K⁺ cations. A hydrogen atom is bonded to a terminal oxygen of a terminal silicate in the oligosilicate anion. Adjacent chains are linked along the b axis by hydrogen bonds. The sample shows a resonance at 14.7 ppm in the ¹H MAS NMR spectrum, which is assigned to the SiO⋯HOSi hydrogen bond. A comparison of uranyl silicate structures is made.

Original language	English
Pages (from-to)	935-940
Number of pages	6
Journal	Inorganic Chemistry
Volume	44
Issue number	4
DOIs	https://doi.org/10.1021/ic0487880
State	Published - 21 Feb 2005

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title = "K5(UO2)2[Si4O 12(OH)]: A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds",

abstract = "A new uranium(VI) silicate, K5(UO2) 2[Si4O12(OH)], has been synthesized by a high-temperature, high-pressure hydrothermal method. It crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 13.1274(7) {\AA}, b = 12.2635(7) {\AA}, c = 22.233(1) {\AA}, and Z = 8. Its structure consists of unbranched chains of four silicate tetrahedra extending along the b axis linked together via corner-sharing by UO6 tetragonal bipyramids to form a 3-D framework, which delimits intersecting channels along the c and b axes to accommodate K+ cations. A hydrogen atom is bonded to a terminal oxygen of a terminal silicate in the oligosilicate anion. Adjacent chains are linked along the b axis by hydrogen bonds. The sample shows a resonance at 14.7 ppm in the 1H MAS NMR spectrum, which is assigned to the SiO⋯HOSi hydrogen bond. A comparison of uranyl silicate structures is made.",

author = "Chen, {Chih Shan} and Kao, {Hsien Ming} and Lii, {Kwang Hwa}",

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T2 - A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds

AU - Chen, Chih Shan

AU - Kao, Hsien Ming

AU - Lii, Kwang Hwa

PY - 2005/2/21

Y1 - 2005/2/21

N2 - A new uranium(VI) silicate, K5(UO2) 2[Si4O12(OH)], has been synthesized by a high-temperature, high-pressure hydrothermal method. It crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 13.1274(7) Å, b = 12.2635(7) Å, c = 22.233(1) Å, and Z = 8. Its structure consists of unbranched chains of four silicate tetrahedra extending along the b axis linked together via corner-sharing by UO6 tetragonal bipyramids to form a 3-D framework, which delimits intersecting channels along the c and b axes to accommodate K+ cations. A hydrogen atom is bonded to a terminal oxygen of a terminal silicate in the oligosilicate anion. Adjacent chains are linked along the b axis by hydrogen bonds. The sample shows a resonance at 14.7 ppm in the 1H MAS NMR spectrum, which is assigned to the SiO⋯HOSi hydrogen bond. A comparison of uranyl silicate structures is made.

AB - A new uranium(VI) silicate, K5(UO2) 2[Si4O12(OH)], has been synthesized by a high-temperature, high-pressure hydrothermal method. It crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 13.1274(7) Å, b = 12.2635(7) Å, c = 22.233(1) Å, and Z = 8. Its structure consists of unbranched chains of four silicate tetrahedra extending along the b axis linked together via corner-sharing by UO6 tetragonal bipyramids to form a 3-D framework, which delimits intersecting channels along the c and b axes to accommodate K+ cations. A hydrogen atom is bonded to a terminal oxygen of a terminal silicate in the oligosilicate anion. Adjacent chains are linked along the b axis by hydrogen bonds. The sample shows a resonance at 14.7 ppm in the 1H MAS NMR spectrum, which is assigned to the SiO⋯HOSi hydrogen bond. A comparison of uranyl silicate structures is made.

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DO - 10.1021/ic0487880

M3 - 期刊論文

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AN - SCOPUS:13844266209

VL - 44

SP - 935

EP - 940

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 4

ER -

K5(UO2)2[Si4O 12(OH)]: A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds

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K₅(UO₂)₂[Si₄O ₁₂(OH)]: A uranyl silicate containing chains of four silicate tetrahedra linked by SiO⋯HOSi hydrogen bonds