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Karray, R.
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<p><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">The crystal structure of lithium–ammonium hexabromotellurate[(NH</span><span style="margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif;">4</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">)</span><span style="margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif;">0.63</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">Li</span><span style="margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif;">0.37</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">]</span><span style="margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif;">2</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">TeBr</span><span style="margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif;">6</span><span style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">, has been determined by X-ray single crystal analysis at <a href="https://www.sciencedirect.com/topics/chemistry/ambient-reaction-temperature" title="Learn more about room temperature from ScienceDirect's AI-generated Topic Pages" class="topic-link" style="margin: 0px; padding: 0px; background-color: transparent; word-break: break-word; text-decoration-line: underline; text-decoration-thickness: 1px; text-decoration-color: rgb(31, 31, 31); color: rgb(31, 31, 31); text-underline-offset: 1px;">room temperature</a>. The space group is Fm</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span class="math" style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"><span class="MathJax_Preview" style="margin: 0px; padding: 0px; color: rgb(136, 136, 136);"></span><span class="MathJax_SVG" id="MathJax-Element-1-Frame" tabindex="0" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mover accent="true" is="true"><mrow is="true"><mn is="true">3</mn></mrow><mrow is="true"><mo is="true">¯</mo></mrow></mover></mrow></math>" role="presentation" style="margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 14.4px; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;"><svg xmlns:xlink="http://www.w3.org/1999/xlink" width="1.325ex" height="2.202ex" viewBox="0 -846.5 570.5 947.9" role="img" focusable="false" style="vertical-align: -0.235ex;" aria-hidden="true"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true" transform="translate(35,0)"><g is="true"><use xlink:href="#MJMAIN-33"></use></g></g><g is="true" transform="translate(0,197)"><g is="true"><use xlink:href="#MJMAIN-AF" x="-70" y="0"></use><use xlink:href="#MJMAIN-AF" x="70" y="0"></use></g></g></g></g></g></svg><span class="MJX_Assistive_MathML" role="presentation" style="margin: 0px; top: 0px; left: 0px; clip: rect(1px, 1px, 1px, 1px); user-select: none; transition: none 0s ease 0s; padding: 1px 0px 0px !important; position: absolute !important; border: 0px !important; height: 1px !important; width: 1px !important; overflow: hidden !important; display: block !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mover accent="true" is="true"><mrow is="true"><mn is="true">3</mn></mrow><mrow is="true"><mo is="true">¯</mo></mrow></mover></mrow></math></span></span></span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">m, with </span><em style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">a</em><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">=</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">10.7200(12)</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">Å. Differential scanning calorimetry reveals three anomalies at 195, 395 and 498</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">K. Below 195</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">K the phase transition leads to a tetragonally distorted structure. This low temperature phase shows an anti-ferrorotative displacement of </span><span class="math" style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"><span class="MathJax_Preview" style="margin: 0px; padding: 0px; color: rgb(136, 136, 136);"></span><span class="MathJax_SVG" id="MathJax-Element-2-Frame" tabindex="0" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">TeBr</mtext></mrow><mrow is="true"><mn is="true">6</mn></mrow><mrow is="true"><mn is="true">2</mn><mo is="true">-</mo></mrow></msubsup></mrow></math>" role="presentation" style="margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 14.4px; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;"><svg xmlns:xlink="http://www.w3.org/1999/xlink" width="7.6ex" height="3.125ex" viewBox="0 -945.9 3272.4 1345.3" role="img" focusable="false" style="vertical-align: -0.928ex;" aria-hidden="true"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true"><g is="true"><use xlink:href="#MJMAIN-54"></use><use xlink:href="#MJMAIN-65" x="722" y="0"></use><use xlink:href="#MJMAIN-42" x="1167" y="0"></use><use xlink:href="#MJMAIN-72" x="1875" y="0"></use></g></g><g is="true" transform="translate(2268,410)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-32"></use></g><g is="true" transform="translate(353,0)"><use transform="scale(0.707)" xlink:href="#MJMAIN-2212"></use></g></g><g is="true" transform="translate(2268,-300)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-36"></use></g></g></g></g></g></svg><span class="MJX_Assistive_MathML" role="presentation" style="margin: 0px; top: 0px; left: 0px; clip: rect(1px, 1px, 1px, 1px); user-select: none; transition: none 0s ease 0s; padding: 1px 0px 0px !important; position: absolute !important; border: 0px !important; height: 1px !important; width: 1px !important; overflow: hidden !important; display: block !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">TeBr</mtext></mrow><mrow is="true"><mn is="true">6</mn></mrow><mrow is="true"><mn is="true">2</mn><mo is="true">-</mo></mrow></msubsup></mrow></math></span></span></span><span style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> <a href="https://www.sciencedirect.com/topics/chemistry/octahedral-crystal" title="Learn more about octahedra from ScienceDirect's AI-generated Topic Pages" class="topic-link" style="margin: 0px; padding: 0px; background-color: transparent; word-break: break-word; text-decoration-line: underline; text-decoration-thickness: 1px; text-decoration-color: rgb(31, 31, 31); color: rgb(31, 31, 31); text-underline-offset: 1px;">octahedra</a> with a tilt angle 6</span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> </span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;">°. The title compound has an anti-fluorite-type arrangement of </span><span class="math" style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"><span class="MathJax_Preview" style="margin: 0px; padding: 0px; color: rgb(136, 136, 136);"></span><span class="MathJax_SVG" id="MathJax-Element-3-Frame" tabindex="0" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">NH</mtext></mrow><mrow is="true"><mn is="true">4</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msubsup><mo is="true">/</mo><msup is="true"><mrow is="true"><mtext is="true">Li</mtext></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></mrow></math>" role="presentation" style="margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 14.4px; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;"><svg xmlns:xlink="http://www.w3.org/1999/xlink" width="9.77ex" height="3.009ex" viewBox="0 -896.2 4206.5 1295.7" role="img" focusable="false" style="vertical-align: -0.928ex;" aria-hidden="true"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true"><g is="true"><use xlink:href="#MJMAIN-4E"></use><use xlink:href="#MJMAIN-48" x="750" y="0"></use></g></g><g is="true" transform="translate(1501,410)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-2B"></use></g></g><g is="true" transform="translate(1501,-308)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-34"></use></g></g></g><g is="true" transform="translate(2151,0)"><use xlink:href="#MJMAIN-2F"></use></g><g is="true" transform="translate(2651,0)"><g is="true"><g is="true"><use xlink:href="#MJMAIN-4C"></use><use xlink:href="#MJMAIN-69" x="625" y="0"></use></g></g><g is="true" transform="translate(904,410)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-2B"></use></g></g></g></g></g></svg><span class="MJX_Assistive_MathML" role="presentation" style="margin: 0px; top: 0px; left: 0px; clip: rect(1px, 1px, 1px, 1px); user-select: none; transition: none 0s ease 0s; padding: 1px 0px 0px !important; position: absolute !important; border: 0px !important; height: 1px !important; width: 1px !important; overflow: hidden !important; display: block !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">NH</mtext></mrow><mrow is="true"><mn is="true">4</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msubsup><mo is="true">/</mo><msup is="true"><mrow is="true"><mtext is="true">Li</mtext></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></mrow></math></span></span></span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> and octahedral </span><span class="math" style="margin: 0px; padding: 0px; color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"><span class="MathJax_Preview" style="margin: 0px; padding: 0px; color: rgb(136, 136, 136);"></span><span class="MathJax_SVG" id="MathJax-Element-4-Frame" tabindex="0" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">TeBr</mtext></mrow><mrow is="true"><mn is="true">6</mn></mrow><mrow is="true"><mn is="true">2</mn><mo is="true">-</mo></mrow></msubsup></mrow></math>" role="presentation" style="margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 14.4px; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;"><svg xmlns:xlink="http://www.w3.org/1999/xlink" width="7.6ex" height="3.125ex" viewBox="0 -945.9 3272.4 1345.3" role="img" focusable="false" style="vertical-align: -0.928ex;" aria-hidden="true"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><g is="true"><g is="true"><g is="true"><use xlink:href="#MJMAIN-54"></use><use xlink:href="#MJMAIN-65" x="722" y="0"></use><use xlink:href="#MJMAIN-42" x="1167" y="0"></use><use xlink:href="#MJMAIN-72" x="1875" y="0"></use></g></g><g is="true" transform="translate(2268,410)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-32"></use></g><g is="true" transform="translate(353,0)"><use transform="scale(0.707)" xlink:href="#MJMAIN-2212"></use></g></g><g is="true" transform="translate(2268,-300)"><g is="true"><use transform="scale(0.707)" xlink:href="#MJMAIN-36"></use></g></g></g></g></g></svg><span class="MJX_Assistive_MathML" role="presentation" style="margin: 0px; top: 0px; left: 0px; clip: rect(1px, 1px, 1px, 1px); user-select: none; transition: none 0s ease 0s; padding: 1px 0px 0px !important; position: absolute !important; border: 0px !important; height: 1px !important; width: 1px !important; overflow: hidden !important; display: block !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><msubsup is="true"><mrow is="true"><mtext is="true">TeBr</mtext></mrow><mrow is="true"><mn is="true">6</mn></mrow><mrow is="true"><mn is="true">2</mn><mo is="true">-</mo></mrow></msubsup></mrow></math></span></span></span><span style="color: rgb(31, 31, 31); font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif; font-size: 16px;"> anions.</span><br></p>
Elsevier Ltd.
April 2014
pdf
Arabian Journal of Chemistry
Crystal structure at (T = 295 and 173 K) of[(NH4)0.63Li0.37]2TeBr6
mixed material
Elsevier Ltd.