Co4 clusters in the high-temperature phase La18Co28In3
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Abstract
The metal-rich indide La18Co28In3 was synthesized by melting of the elements in a high-frequency furnace and characterized by X-ray diffraction on powders and single crystals. This high-temperature phase crystallizes with a new structure type: 14/mmm, a = 1432.56(8), c = 984.35(6) pm, wR2 = 0.1054, 1027 F2 values, 43 variables at 295 K. The structure is built up by a complex three-dimensional network of Co4 tetrahedra which are condensed via further cobalt atoms with a broad range of Co-Co distances (242-262 pm). This network leaves larger channels which are filled by the lanthanum and indium centered polyhedra. The two crystallographically independent indium atoms have exclusively lanthanum neighbors within the channels. They form infinite (In1-In2-In2) chains along c with In1-In2 and In2-In2 distances of 332 and 319 pm, respectively. These chains are only weakly bonded to their lanthanum neighbors with La-In distances ranging from 344 to 368 pm. Both indium sites show enhanced displacements along the c axis. Temperature dependent diffraction studies and similarities to the incommensurate La1.18Rh3In2 structure are discussed.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Co<sub>4</sub> clusters in the high-temperature phase La<sub>18</sub>Co<sub>28</sub>In<sub>3</sub></title><author><name sortKey="Galadzhun, Yaroslav V" uniqKey="Galadzhun Y">Yaroslav V. Galadzhun</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculty of Chemistry, Ivan Franko National University, Kyryla and Mephodiya Street 6</s1><s2>79005 Lviv</s2><s3>UKR</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>79005 Lviv</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30</s1><s2>48149 Münster</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>48149 Münster</wicri:noRegion><wicri:noRegion>Corrensstrasse 30</wicri:noRegion><wicri:noRegion>48149 Münster</wicri:noRegion></affiliation></author><author><name sortKey="Rodewald, Ute Ch" uniqKey="Rodewald U">Ute Ch. Rodewald</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30</s1><s2>48149 Münster</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>48149 Münster</wicri:noRegion><wicri:noRegion>Corrensstrasse 30</wicri:noRegion><wicri:noRegion>48149 Münster</wicri:noRegion></affiliation></author><author><name sortKey="Svitlyk, Volodymyr" uniqKey="Svitlyk V">Volodymyr Svitlyk</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>ID27 High Pressure Beamline, European Synchrotron Radiation Facility, BP 220</s1><s2>38043 Grenoble</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Rhône-Alpes</region><settlement type="city">Grenoble</settlement></placeName></affiliation></author><author><name sortKey="Kalychak, Yaroslav" uniqKey="Kalychak Y">Yaroslav Kalychak</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Faculty of Chemistry, Ivan Franko National University, Kyryla and Mephodiya Street 6</s1><s2>79005 Lviv</s2><s3>UKR</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>79005 Lviv</wicri:noRegion></affiliation></author><author><name sortKey="Pottgen, Rainer" uniqKey="Pottgen R">Rainer Pöttgen</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30</s1><s2>48149 Münster</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><wicri:noRegion>48149 Münster</wicri:noRegion><wicri:noRegion>Corrensstrasse 30</wicri:noRegion><wicri:noRegion>48149 Münster</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">14-0053976</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 14-0053976 INIST</idno><idno type="RBID">Pascal:14-0053976</idno><idno type="wicri:Area/Main/Corpus">000143</idno><idno type="wicri:Area/Main/Repository">001053</idno></publicationStmt><seriesStmt><idno type="ISSN">2194-4946</idno><title level="j" type="abbreviated">Z. Kristallogr., Cryst. mater.</title><title level="j" type="main">Zeitschrift für Kristallographie. Crystalline materials</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cobalt</term><term>Crystal structure</term><term>High frequency</term><term>High temperature</term><term>Incommensurate phases</term><term>Indium</term><term>Intermetallic compounds</term><term>Melting</term><term>Monocrystals</term><term>Temperature dependence</term><term>Temperature effects</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Haute température</term><term>Fusion</term><term>Haute fréquence</term><term>Diffraction RX</term><term>Structure cristalline</term><term>Cobalt</term><term>Indium</term><term>Dépendance température</term><term>Effet température</term><term>Phase incommensurable</term><term>Monocristal</term><term>Composé intermétallique</term><term>6166</term><term>6144F</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The metal-rich indide La<sub>18</sub>Co<sub>28</sub>In<sub>3</sub> was synthesized by melting of the elements in a high-frequency furnace and characterized by X-ray diffraction on powders and single crystals. This high-temperature phase crystallizes with a new structure type: 14/mmm, a = 1432.56(8), c = 984.35(6) pm, wR2 = 0.1054, 1027 F<sup>2</sup> values, 43 variables at 295 K. The structure is built up by a complex three-dimensional network of Co<sub>4</sub> tetrahedra which are condensed via further cobalt atoms with a broad range of Co-Co distances (242-262 pm). This network leaves larger channels which are filled by the lanthanum and indium centered polyhedra. The two crystallographically independent indium atoms have exclusively lanthanum neighbors within the channels. They form infinite (In1-In2-In2) chains along c with In1-In2 and In2-In2 distances of 332 and 319 pm, respectively. These chains are only weakly bonded to their lanthanum neighbors with La-In distances ranging from 344 to 368 pm. Both indium sites show enhanced displacements along the c axis. Temperature dependent diffraction studies and similarities to the incommensurate La<sub>1.18</sub>Rh<sub>3</sub>In<sub>2</sub> structure are discussed.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>2194-4946</s0></fA01><fA03 i2="1"><s0>Z. Kristallogr., Cryst. mater.</s0></fA03><fA05><s2>228</s2></fA05><fA06><s2>12</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Co<sub>4</sub> clusters in the high-temperature phase La<sub>18</sub>Co<sub>28</sub>In<sub>3</sub></s1></fA08><fA11 i1="01" i2="1"><s1>GALADZHUN (Yaroslav V.)</s1></fA11><fA11 i1="02" i2="1"><s1>RODEWALD (Ute CH.)</s1></fA11><fA11 i1="03" i2="1"><s1>SVITLYK (Volodymyr)</s1></fA11><fA11 i1="04" i2="1"><s1>KALYCHAK (Yaroslav)</s1></fA11><fA11 i1="05" i2="1"><s1>PÖTTGEN (Rainer)</s1></fA11><fA14 i1="01"><s1>Faculty of Chemistry, Ivan Franko National University, Kyryla and Mephodiya Street 6</s1><s2>79005 Lviv</s2><s3>UKR</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="02"><s1>Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30</s1><s2>48149 Münster</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="03"><s1>ID27 High Pressure Beamline, European Synchrotron Radiation Facility, BP 220</s1><s2>38043 Grenoble</s2><s3>FRA</s3><sZ>3 aut.</sZ></fA14><fA20><s1>650-655</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>915</s2><s5>354000500795090070</s5></fA43><fA44><s0>0000</s0><s1>© 2014 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>26 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>14-0053976</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Zeitschrift für Kristallographie. Crystalline materials</s0></fA64><fA66 i1="01"><s0>DEU</s0></fA66><fC01 i1="01" l="ENG"><s0>The metal-rich indide La<sub>18</sub>Co<sub>28</sub>In<sub>3</sub> was synthesized by melting of the elements in a high-frequency furnace and characterized by X-ray diffraction on powders and single crystals. This high-temperature phase crystallizes with a new structure type: 14/mmm, a = 1432.56(8), c = 984.35(6) pm, wR2 = 0.1054, 1027 F<sup>2</sup> values, 43 variables at 295 K. The structure is built up by a complex three-dimensional network of Co<sub>4</sub> tetrahedra which are condensed via further cobalt atoms with a broad range of Co-Co distances (242-262 pm). This network leaves larger channels which are filled by the lanthanum and indium centered polyhedra. The two crystallographically independent indium atoms have exclusively lanthanum neighbors within the channels. They form infinite (In1-In2-In2) chains along c with In1-In2 and In2-In2 distances of 332 and 319 pm, respectively. These chains are only weakly bonded to their lanthanum neighbors with La-In distances ranging from 344 to 368 pm. Both indium sites show enhanced displacements along the c axis. Temperature dependent diffraction studies and similarities to the incommensurate La<sub>1.18</sub>Rh<sub>3</sub>In<sub>2</sub> structure are discussed.</s0></fC01><fC02 i1="01" i2="3"><s0>001B60A66</s0></fC02><fC02 i1="02" i2="3"><s0>001B60A44F</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Haute température</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>High temperature</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Alta temperatura</s0><s5>01</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Fusion</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Melting</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Haute fréquence</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>High frequency</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Alta frecuencia</s0><s5>03</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Diffraction RX</s0><s5>04</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>XRD</s0><s5>04</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Structure cristalline</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Crystal structure</s0><s5>05</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Cobalt</s0><s2>NC</s2><s5>06</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Cobalt</s0><s2>NC</s2><s5>06</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Indium</s0><s2>NC</s2><s5>07</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Indium</s0><s2>NC</s2><s5>07</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Dépendance température</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Temperature dependence</s0><s5>08</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Effet température</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Temperature effects</s0><s5>09</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Phase incommensurable</s0><s5>10</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Incommensurate phases</s0><s5>10</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Monocristal</s0><s5>15</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Monocrystals</s0><s5>15</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Composé intermétallique</s0><s5>16</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Intermetallic compounds</s0><s5>16</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>6166</s0><s4>INC</s4><s5>71</s5></fC03><fC03 i1="14" i2="3" l="FRE"><s0>6144F</s0><s4>INC</s4><s5>72</s5></fC03><fN21><s1>069</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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