{"title":"新型三元金属间化合物 R4Ru2Ga3（R = Pr、Nd、Sm、Gd、Tb、Dy、Ho、Er）","authors":"I. A. Grekhov, Zh. M. Kurenbaeva, E. V. Murashova","doi":"10.1134/S1063774523601570","DOIUrl":null,"url":null,"abstract":"<p>A number of new isostructural ternary intermetallic compounds of the composition <i>R</i><sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> (<i>R</i> = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) were found in ternary <i>R</i>–Ru–Ga systems. The single-crystal X-ray diffraction study of Nd<sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> showed that this compound crystallizes in the monoclinic system and it is a representative of a new structure type (<i>a</i> = 10 Å, <i>b</i> = 4.0533(11) Å, <i>c</i> = 9.720(3) Å, β = 111.080(7)°, space group <i>С</i>2, <i>Z</i> = 2, <i>R</i>1 = 0.043, <i>wR</i>2 = 0.077 for 1518 reflections). The specific structural feature of this compound is the presence of distorted RuNd<sub>6</sub> (AlB<sub>2</sub> type) and GaNd<sub>8</sub> (CsCl type) units. The shortest Nd–Ru distance in the polyhedron is 2.8463(16) Å, which is significantly smaller than the sum of the corresponding atomic radii. The unit cell parameters and volumes in the <i>R</i><sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> series (<i>R</i> = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) decrease in accordance with lanthanide compression, while their melting points increase.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 4","pages":"478 - 484"},"PeriodicalIF":0.6000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel Ternary Intermetallic Compounds R4Ru2Ga3 (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er)\",\"authors\":\"I. A. Grekhov, Zh. M. Kurenbaeva, E. V. Murashova\",\"doi\":\"10.1134/S1063774523601570\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A number of new isostructural ternary intermetallic compounds of the composition <i>R</i><sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> (<i>R</i> = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) were found in ternary <i>R</i>–Ru–Ga systems. The single-crystal X-ray diffraction study of Nd<sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> showed that this compound crystallizes in the monoclinic system and it is a representative of a new structure type (<i>a</i> = 10 Å, <i>b</i> = 4.0533(11) Å, <i>c</i> = 9.720(3) Å, β = 111.080(7)°, space group <i>С</i>2, <i>Z</i> = 2, <i>R</i>1 = 0.043, <i>wR</i>2 = 0.077 for 1518 reflections). The specific structural feature of this compound is the presence of distorted RuNd<sub>6</sub> (AlB<sub>2</sub> type) and GaNd<sub>8</sub> (CsCl type) units. The shortest Nd–Ru distance in the polyhedron is 2.8463(16) Å, which is significantly smaller than the sum of the corresponding atomic radii. The unit cell parameters and volumes in the <i>R</i><sub>4</sub>Ru<sub>2</sub>Ga<sub>3</sub> series (<i>R</i> = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) decrease in accordance with lanthanide compression, while their melting points increase.</p>\",\"PeriodicalId\":527,\"journal\":{\"name\":\"Crystallography Reports\",\"volume\":\"69 4\",\"pages\":\"478 - 484\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-09-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Crystallography Reports\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1063774523601570\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystallography Reports","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1063774523601570","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
A number of new isostructural ternary intermetallic compounds of the composition R4Ru2Ga3 (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) were found in ternary R–Ru–Ga systems. The single-crystal X-ray diffraction study of Nd4Ru2Ga3 showed that this compound crystallizes in the monoclinic system and it is a representative of a new structure type (a = 10 Å, b = 4.0533(11) Å, c = 9.720(3) Å, β = 111.080(7)°, space group С2, Z = 2, R1 = 0.043, wR2 = 0.077 for 1518 reflections). The specific structural feature of this compound is the presence of distorted RuNd6 (AlB2 type) and GaNd8 (CsCl type) units. The shortest Nd–Ru distance in the polyhedron is 2.8463(16) Å, which is significantly smaller than the sum of the corresponding atomic radii. The unit cell parameters and volumes in the R4Ru2Ga3 series (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) decrease in accordance with lanthanide compression, while their melting points increase.
期刊介绍：
Crystallography Reports is a journal that publishes original articles short communications, and reviews on various aspects of crystallography: diffraction and scattering of X-rays, electrons, and neutrons, determination of crystal structure of inorganic and organic substances, including proteins and other biological substances; UV-VIS and IR spectroscopy; growth, imperfect structure and physical properties of crystals; thin films, liquid crystals, nanomaterials, partially disordered systems, and the methods of studies.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
