CONDENSED METAL CLUSTER IODIDES CENTERED BY NOBLE-METALS - 6 EXAMPLES OF CUBIC R3I3Z PHASES (R = LA, PR, Z = OS, IR, PT)

被引：36

作者：

DORHOUT, PK ^{[1
]}

PAYNE, MW ^{[1
]}

CORBETT, JD ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

INORGANIC CHEMISTRY | 1991年 / 30卷 / 26期

关键词：

D O I：

10.1021/ic00026a021

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The isostructural compounds R3I3Z (R = La, Pr; Z = Os, Ir, Pt) are synthesized by reaction of R turnings, RI3, and powdered Z at approximately 950-degrees-C in sealed Nb containers. Neighboring Z elements or lower temperatures produce other cluster compounds. The structure of Pr3I3Pt was refined and shown to be isostructural with Ca3PI3 (and Gd3Cl3C): I4(1)32, Z = 12, a = 12.4150 (4) angstrom, R/R(w) = 2.6/4.4%. Platinum-centered Pr6I12-type clusters share three nonadjacent Pr-Pr edges to give 4(1) cluster chains in a defect NaCl arrangement: Pr6/2(Pt)I12/4. Magnetic and resistivity data suggest the phases are poor metals.

引用

页码：4960 / 4962

页数：3

共 20 条

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