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Wang X, Jacobson AJ. Layered structures based on antimony tartrate dimers. Z KRIST-CRYST MATER 2022. [DOI: 10.1515/zkri-2022-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Four complex metal antimony tartrates have been synthesized in single crystal form by slowly evaporating aqueous solutions of potassium antimony tartrate (tartar emetic) and metal nitrates or chlorides. Crystal structures of these compounds all contain infinite layers formed by linking antimony tartrate dimers with M–O bonds, with M = Li, La, Ce or Nd. Dehydration of the La and Ce compounds at elevated temperatures led to new layered structures via single-crystal to single-crystal transformations.
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Affiliation(s)
- Xiqu Wang
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , 77204-5003 Houston , TX , USA
| | - Allan J. Jacobson
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , 77204-5003 Houston , TX , USA
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Abstract
Abstract
Seven complex metal antimony tartrates have been synthesized in single crystal form by slowly evaporating aqueous solutions of potassium antimony tartrate (tartar emetic) and divalent metal nitrates or perchlorates. Crystal structures of these compounds all contain infinite chains formed by linking antimony tartrate dimers with divalent metal ions. While infinite chains of antimony tartrate dimers bridged by single Zn2+ ions or by double Mg2+ ions were reported previously, new types of chains with alternating single and double bridging cations are observed in this work.
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Wang X, Makarenko T, Jacobson AJ. Stacking changes of KLi[Sb 2(C 4H 2O 6) 2] homochiral layers mediated by interlayer solvent molecules. Z KRIST-CRYST MATER 2017. [DOI: 10.1515/zkri-2017-2047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new compound KLi[Sb2(C4H2O6)2]·4H2O, 1, was synthesized in single crystal form by slowly evaporating an aqueous solution of potassium antimony tartrate and lithium nitrate. The structure of 1 consists of homochiral layers of antimony tartrate dimers linked by LiO4 tetrahedra. The interlayer water molecules can be reversibly driven out by heating or exchanged by small alcohol molecules under ambient conditions, occurring via single-crystal to single-crystal transformations. To accommodate different interlayer molecules, the interlayer space is changed by adjusting the relative lateral shift of neighboring layers. A similar adjustment in the layer stacking also occurs in a structural phase transition caused by order-disorder transformation of the arrangement of interlayer methanol molecules at low temperature.
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Affiliation(s)
- Xiqu Wang
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003 , USA
| | - Tatyana Makarenko
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003 , USA
| | - Allan J. Jacobson
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003 , USA
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Wang X, Makarenko T, Jacobson AJ. Synthesis and structural phase transitions of [Mg2Sb2(C4H2O6)2(H2O)8](ClO4)2·5H2O with complex homochiral chains. Z KRIST-CRYST MATER 2016. [DOI: 10.1515/zkri-2016-1954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new magnesium antimony tartrate perchlorate [Mg2Sb2(C4H2O6)2(H2O)8](ClO4)2·5H2O, 1, was synthesized in single crystal form by slowly evaporating an aqueous solution of potassium antimony tartrate and magnesium perchlorate. In the temperature interval 298 K–123 K, the compound undergoes two reversible structural phase transitions. The transition from phase I to phase II at ca. 236 K is second order and the transition from phase II to phase III at ca. 144 K is first order. Phase I has an orthorhombic structure, P21212, a=11.8658(4) Å, b=16.464(1) Å, c=8.3895(4) Å at 298 K, containing infinite chains of antimony tartrate dimeric clusters bridged by MgO2(H2O)4 octahedra. The ClO4
− anions occupying the interchain space show pronounced dynamic disorder. Phase II is monoclinic, P21, a=8.3813(8) Å, b=11.760(1) Å, c=16.289(2) Å, β=92.442(2)° at 153 K. Phase III has an orthorhombic unit cell with quadrupled cell volume, P212121, a=11.6914(8) Å, b=16.176(1) Å, c=33.426(2) Å at 123 K. While the infinite chains in phases II and III are closely similar to those in phase I, the ClO4
− anions show different orientations and gradual disappearance of dynamic disorder as the temperature is lowered.
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Affiliation(s)
- Xiqu Wang
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003, USA
| | - Tatyana Makarenko
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003, USA
| | - Allan J. Jacobson
- Department of Chemistry and Texas Center for Superconductivity , University of Houston , Houston, TX 77204-5003, USA
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