新型三元氮化物SrTiN₂的合成与结构

Synthesis and Structure of the New Ternary Nitride SrTiN(2).

作者信息

Gregory D. H., Barker M. G., Edwards P. P., Siddons D. J.

机构信息

Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K., and School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.

出版信息

Inorg Chem. 1998 Jul 27;37(15):3775-3778. doi: 10.1021/ic971556z.

DOI:10.1021/ic971556z

PMID:11670478

Abstract

A new ternary nitride, SrTiN(2), has been synthesized by the solid-state reaction of Sr(2)N with TiN and characterized by powder X-ray diffraction. SrTiN(2) crystallizes in the tetragonal space group P4/nmm (a = 3.8799(2) Å, c = 7.6985(4) Å, Z = 2) and is isostructural with KCoO(2). Titanium is coordinated to five nitrogens in a distorted square-based pyramidal geometry, forming layers of edge-sharing pyramids which stack along the (001) direction. Strontium is situated between the Ti-N layers and is coordinated to five nitrogen atoms. The title compound is only the third example of a ternary titanium nitride.

摘要

通过 Sr₂N 与 TiN 的固态反应合成了一种新的三元氮化物 SrTiN₂，并通过粉末 X 射线衍射对其进行了表征。SrTiN₂ 结晶于四方空间群 P4/nmm（a = 3.8799(2) Å，c = 7.6985(4) Å，Z = 2），与 KCoO₂ 同构。钛以扭曲的四方锥几何构型与五个氮原子配位，形成沿（001）方向堆叠的共边金字塔层。锶位于 Ti-N 层之间，与五个氮原子配位。该标题化合物是三元氮化钛的第三个实例。