SYNTHESIS, STRUCTURE, AND PROPERTIES OF A NEW TERNARY METAL NITRIDE, CA3CRN3

被引：83

作者：

VENNOS, DA ^{[1
]}

BADDING, ME ^{[1
]}

DISALVO, FJ ^{[1
]}

机构：

[1] CORNELL UNIV,DEPT CHEM,ITHACA,NY 14853

来源：

INORGANIC CHEMISTRY | 1990年 / 29卷 / 20期

关键词：

D O I：

10.1021/ic00345a030

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We have synthesized a new ternary nitride, Ca3CrN3, from the binary nitrides at high temperature. The refined structure was solved in the Cmcm space group, Z = 4, with lattice constants (Å) a = 8.503 (2), b = 10.284 (2), and c = 5.032 (1) and with R = 3.9% and Rw= 3.9%. This new structure type consists of sheets of [CrN3]6-planar triangular units and calcium ions. Ca3CrN3is insulating and paramagnetic with Cr3+in the low-spin state. This is the first unambiguous example of low-spin Cr3+. Larger than expected antiferromagnetic interactions produce a maximum in the magnetic susceptibility at 240 K, even though the shortest Cr-Cr distance is 4.73 Å. © 1990, American Chemical Society. All rights reserved.

引用

页码：4059 / 4062

页数：4

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