Synthesis and crystal structure of γ-SrNCN at 38 GPa

IF 0.5 Q4 CRYSTALLOGRAPHY

Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI:10.1107/S2056989026006080

Lukas Brüning, Georg Krach, Pascal Lennert Jurzick, Wolfgang Schnick, Maxim Bykov

引用次数: 0

Abstract

γ-Strontium carbodiimide, γ-SrNCN, was synthesized from a mixture of strontium subnitride (Sr₂N) and tetracyanoethylene (C₆N₄) at 38 (3) GPa in a laser-heated diamond anvil cell. Its crystal structure was solved and refined using synchrotron single-crystal X-ray diffraction. The new polymorph crystallizes in space group I4/mcm (No. 140), where the Sr²⁺ and NCN²⁻ packing can be derived from the CsCl (B2) structure type. γ-SrNCN (tI16-SrNCN) is isostructural to tI16-BaNCN and represents the first high-pressure polymorph of SrNCN.

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38 GPa γ-SrNCN的合成及晶体结构。

以亚氮化锶（Sr2N）和四氰乙基乙烯（C6N4）为原料，在38 (3)GPa的温度下，在激光加热的金刚石砧细胞中合成了γ-锶碳酰亚胺（γ-SrNCN）。利用同步加速器x射线单晶衍射对其晶体结构进行了解析和细化。新的晶型在空间群I4/mcm （No. 140）中结晶，其中Sr2+和NCN2-充填可以从CsCl （B2）结构类型中衍生出来。γ-SrNCN （tI16-SrNCN）与tI16-BaNCN是同构的，是SrNCN的第一个高压晶型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Crystallographica Section E: Crystallographic Communications Chemistry-Chemistry (all)

CiteScore

1.90

自引率

0.00%

发文量

351

审稿时长

3 weeks

期刊介绍： Acta Crystallographica Section E: Crystallographic Communications is the IUCr''s open-access structural communications journal. It provides a fast, simple and easily accessible publication mechanism for crystal structure determinations of inorganic, metal-organic and organic compounds. The electronic submission, validation, refereeing and publication facilities of the journal ensure rapid and high-quality publication of fully validated structures. The primary article category is Research Communications; these are peer-reviewed articles describing one or more structure determinations with appropriate discussion of the science.