Synthesis and structures of samarium platinum germanides : SmPtGe2 and Sm2Pt3Ge5
Synthesis and structures of samarium platinum germanides : SmPtGe2 and Sm2Pt3Ge5
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钐铂锗化物的合成和结构：SmPtGe2 和 Sm2Pt3Ge5
DOI：
10.1016/j.jallcom.2009.08.052
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发表时间：
2009
影响因子：
6.2
通讯作者：
S. Yamanaka
中科院分区：
文献类型：
--
作者：
Fumiko Ohtsu;H. Fukuoka;S. Yamanaka
We performed single-crystal structure analysis of two ternary samarium platinum germanides SmPtGe{sub 2} and Sm{sub 2}Pt{sub 3}Ge{sub 5}. SmPtGe{sub 2} crystallizes in the space group (S.G.) Immm (no. 71) with a = 4.3679(9) A, b = 8.728(2) A, c = 16.378(4) A, and V = 624.4(2) A{sup 3}. This compound is isotypic with YIrGe{sub 2} having a Ge{sub 10}Pt{sub 4} subunit composed of edge-sharing five- and six-membered rings. SmPtGe{sub 2} shows a metallic conductivity from room temperature down to 2 K. The magnetic susceptibility measurement showed a 3+ oxidation state for the samarium. Sm{sub 2}Pt{sub 3}Ge{sub 5} crystallizes in the S.G. Ibam (no. 72) with a = 10.174(1) A, b = 11.761(2) A, c = 6.2142(8) A, and V = 743.6(2) A{sup 3}. It is isotypic with U{sub 2}Co{sub 3}Si{sub 5} with a structure closely related to ThCr{sub 2}Si{sub 2}.
We performed single-crystal structure analysis of two ternary samarium platinum germanides SmPtGe{sub 2} and Sm{sub 2}Pt{sub 3}Ge{sub 5}. SmPtGe{sub 2} crystallizes in the space group (S.G.) Immm (no. 71) with a = 4.3679(9) A, b = 8.728(2) A, c = 16.378(4) A, and V = 624.4(2) A{sup 3}. This compound is isotypic with YIrGe{sub 2} having a Ge{sub 10}Pt{sub 4} subunit composed of edge-sharing five- and six-membered rings. SmPtGe{sub 2} shows a metallic conductivity from room temperature down to 2 K. The magnetic susceptibility measurement showed a 3+ oxidation state for the samarium. Sm{sub 2}Pt{sub 3}Ge{sub 5} crystallizes in the S.G. Ibam (no. 72) with a = 10.174(1) A, b = 11.761(2) A, c = 6.2142(8) A, and V = 743.6(2) A{sup 3}. It is isotypic with U{sub 2}Co{sub 3}Si{sub 5} with a structure closely related to ThCr{sub 2}Si{sub 2}.
缺钡I型硅笼形化合物Ba_<8-x>Si_<46>的合成与超导
DOI：
--
发表时间：
2004
期刊：
J. Phys. Chem. Solids 65
影响因子：
--
作者：
Uematsu;M.;H.Fukuoka
通讯作者：
H.Fukuoka