Crystal structure of Tm2Ni12P7
Identifieur interne : 000F54 ( Pascal/Curation ); précédent : 000F53; suivant : 000F55Crystal structure of Tm2Ni12P7
Auteurs : T. P. Braun [États-Unis] ; F. J. Disalvo [États-Unis]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2000.
Descripteurs français
- Pascal (Inist)
- Structure cristalline, Diffraction RX, Paramètre cristallin, Maclage, Groupe espace, Polyèdre coordination, Monocristal, Cristal non centrosymétrique, Composé intermétallique, Alliage base nickel, Thulium alliage, Phosphore alliage, Alliage ternaire, Etude expérimentale, 6166D, Alliage Ni56Tm27P17, Ni P Tm.
English descriptors
- KwdEn :
Abstract
The crystal structure of Tm2Ni12P7 has been determined by single crystal X-ray diffraction. Tm2Ni12P7 crystallizes in the Zr2Fe12P7 structure type with a=9.0577(13) Å and c=3.6641(7) Å. The sample was prepared by melting the elements in a tin flux. All crystals show racemic twinning. The long standing dispute over the the correct space group symmetry (P6 or P63/m) could be solved: Tm2Ni12P7 crystallizes in the non-centrosymmetric space group P6.
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Ni<sub>12</sub>
P<sub>7</sub>
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Ni<sub>12</sub>
P<sub>7</sub>
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<term>Crystal structure</term>
<term>Experimental study</term>
<term>Intermetallic compounds</term>
<term>Lattice parameters</term>
<term>Monocrystals</term>
<term>Nickel base alloys</term>
<term>Non centrosymmetric crystals</term>
<term>Phosphorus alloys</term>
<term>Space groups</term>
<term>Ternary alloys</term>
<term>Thulium alloys</term>
<term>Twinning</term>
<term>XRD</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Structure cristalline</term>
<term>Diffraction RX</term>
<term>Paramètre cristallin</term>
<term>Maclage</term>
<term>Groupe espace</term>
<term>Polyèdre coordination</term>
<term>Monocristal</term>
<term>Cristal non centrosymétrique</term>
<term>Composé intermétallique</term>
<term>Alliage base nickel</term>
<term>Thulium alliage</term>
<term>Phosphore alliage</term>
<term>Alliage ternaire</term>
<term>Etude expérimentale</term>
<term>6166D</term>
<term>Alliage Ni56Tm27P17</term>
<term>Ni P Tm</term>
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<front><div type="abstract" xml:lang="en">The crystal structure of Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
has been determined by single crystal X-ray diffraction. Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
crystallizes in the Zr<sub>2</sub>
Fe<sub>12</sub>
P<sub>7</sub>
structure type with a=9.0577(13) Å and c=3.6641(7) Å. The sample was prepared by melting the elements in a tin flux. All crystals show racemic twinning. The long standing dispute over the the correct space group symmetry (P6 or P6<sub>3</sub>
/m) could be solved: Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
crystallizes in the non-centrosymmetric space group P6.</div>
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Ni<sub>12</sub>
P<sub>7</sub>
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<fA11 i1="01" i2="1"><s1>BRAUN (T. P.)</s1>
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<fA11 i1="02" i2="1"><s1>DISALVO (F. J.)</s1>
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<fC01 i1="01" l="ENG"><s0>The crystal structure of Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
has been determined by single crystal X-ray diffraction. Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
crystallizes in the Zr<sub>2</sub>
Fe<sub>12</sub>
P<sub>7</sub>
structure type with a=9.0577(13) Å and c=3.6641(7) Å. The sample was prepared by melting the elements in a tin flux. All crystals show racemic twinning. The long standing dispute over the the correct space group symmetry (P6 or P6<sub>3</sub>
/m) could be solved: Tm<sub>2</sub>
Ni<sub>12</sub>
P<sub>7</sub>
crystallizes in the non-centrosymmetric space group P6.</s0>
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<s5>01</s5>
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<fC03 i1="02" i2="3" l="FRE"><s0>Diffraction RX</s0>
<s5>02</s5>
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<fC03 i1="02" i2="3" l="ENG"><s0>XRD</s0>
<s5>02</s5>
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<s5>03</s5>
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<s5>03</s5>
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<fC03 i1="04" i2="3" l="FRE"><s0>Maclage</s0>
<s5>04</s5>
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<fC03 i1="04" i2="3" l="ENG"><s0>Twinning</s0>
<s5>04</s5>
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<s5>05</s5>
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<s5>05</s5>
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<fC03 i1="06" i2="X" l="FRE"><s0>Polyèdre coordination</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Coordination polyhedron</s0>
<s5>06</s5>
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<fC03 i1="06" i2="X" l="SPA"><s0>Poliedro coordinación</s0>
<s5>06</s5>
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<fC03 i1="07" i2="3" l="FRE"><s0>Monocristal</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Monocrystals</s0>
<s5>07</s5>
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<s5>08</s5>
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<s5>08</s5>
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<s5>08</s5>
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<s5>09</s5>
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<s5>09</s5>
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<fC03 i1="10" i2="3" l="FRE"><s0>Alliage base nickel</s0>
<s2>NK</s2>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Nickel base alloys</s0>
<s2>NK</s2>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Thulium alliage</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Thulium alloys</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Phosphore alliage</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Phosphorus alloys</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Alliage ternaire</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Ternary alloys</s0>
<s5>13</s5>
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<fC03 i1="14" i2="3" l="FRE"><s0>Etude expérimentale</s0>
<s5>14</s5>
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<s5>14</s5>
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<fC03 i1="15" i2="3" l="FRE"><s0>6166D</s0>
<s2>PAC</s2>
<s4>INC</s4>
<s5>56</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Alliage Ni56Tm27P17</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>92</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Ni P Tm</s0>
<s4>INC</s4>
<s5>93</s5>
</fC03>
<fC07 i1="01" i2="3" l="FRE"><s0>Métal transition alliage</s0>
<s5>16</s5>
</fC07>
<fC07 i1="01" i2="3" l="ENG"><s0>Transition element alloys</s0>
<s5>16</s5>
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<fN21><s1>255</s1>
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