Ca3Pt(4+x)Ge(13-y) 和 Yb3Pt4Ge13：Pr3Rh4Sn13 结构类型的新衍生物。
Ca3Pt(4+x)Ge(13-y) and Yb3Pt4Ge13: new derivatives of the Pr3Rh4Sn13 structure type.
机构信息
Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany.
出版信息
Dalton Trans. 2012 May 28;41(20):6299-309. doi: 10.1039/c2dt30339f. Epub 2012 Apr 20.
The new phases Ca(3)Pt(4+x)Ge(13-y) (x = 0.1; y = 0.4; space group I2(1)3; a = 18.0578(1) Å; R(I) = 0.063; R(P) = 0.083) and Yb(3)Pt(4)Ge(13) (space group P4(2)cm; a = 12.7479(1) Å; c = 9.0009(1) Å; R(I) = 0.061, R(P) = 0.117) are obtained by high-pressure, high-temperature synthesis and crystallize in new distortion variants of the Pr(3)Rh(4)Sn(13) type. Yb(3)Pt(4)Ge(13) features Yb in a temperature-independent non-magnetic 4f(14) (Yb(2+)) configuration validated by X-ray absorption spectra and resonant inelastic X-ray scattering data. Ca(3)Pt(4+x)Ge(13-y) is diamagnetic (χ(0) = -5.05 × 10(-6) emu mol(-1)). The Sommerfeld coefficient γ = 4.4 mJ mol(-1) K(-2) for Ca(3)Pt(4+x)Ge(13-y), indicates metallic properties with a low density of states at the Fermi level in good agreement with electronic structure calculation (N(E(F)) = 3.3 eV(-1)/f.u.)); the Debye temperature (θ(D)) is 398 K.
新相 Ca(3)Pt(4+x)Ge(13-y)（x = 0.1；y = 0.4；空间群 I2(1)3；a = 18.0578(1) Å；R(I) = 0.063；R(P) = 0.083）和 Yb(3)Pt(4)Ge(13)（空间群 P4(2)cm；a = 12.7479(1) Å；c = 9.0009(1) Å；R(I) = 0.061，R(P) = 0.117）是通过高温高压合成得到的，它们在 Pr(3)Rh(4)Sn(13)型的新畸变变体中结晶。Yb(3)Pt(4)Ge(13)中的 Yb 具有温度无关的非磁性 4f(14)（Yb(2+)）构型，这一构型通过 X 射线吸收谱和共振非弹性 X 射线散射数据得到验证。Ca(3)Pt(4+x)Ge(13-y)是抗磁性的（χ(0) = -5.05 × 10(-6) emu mol(-1)）。Ca(3)Pt(4+x)Ge(13-y)的 Sommerfeld 系数 γ = 4.4 mJ mol(-1) K(-2)表明其具有金属性质，费米能级处的态密度较低，与电子结构计算结果一致（N(E(F)) = 3.3 eV(-1)/f.u.）；德拜温度（θ(D)）为 398 K。
Zotero 插件