Two New Structurally Related Strontium Gallium Nitrides: Sr4GaN3O and Sr4GaN3(CN2)

详细信息    查看全文

• 作者：Phillip M. Mallinson ; Zolt&aacute ; n A. G&aacute ; l ; and Simon J. Clarke
• 刊名：Inorganic Chemistry
• 出版年：2006
• 出版时间：January 9, 2006
• 年：2006
• 卷：45
• 期：1
• 页码：419 - 423
• 全文大小：183K
• 年卷期：v.45,no.1(January 9, 2006)
• ISSN：1520-510X

文摘

The strontium gallium oxynitride Sr₄GaN₃O and nitride-carbodiimide Sr₄GaN₃(CN₂) are reported, synthesized assingle crystals from molten sodium at 900 ges/entities/deg.gif">C. Red Sr₄GaN₃O crystallizes in space group Pbca (No. 61) with a =7.4002(1) Å, b = 24.3378(5) Å, c = 7.4038(1) Å, and Z = 8, as determined from single-crystal X-ray diffractionmeasurements at 150 K. The structure may be viewed as consisting of slabs [Sr₄GaN₃]²⁺ containing double layersof isolated [GaN₃]^6- triangular anions arranged in a "herringbone" fashion, and these slabs are separated by O^2-anions. Brown Sr₄GaN₃(CN₂) has a closely related structure in which the oxide anions in the Sr₄GaN₃O structureare replaced by almost linear carbodiimide [CN₂]^2- anions [Sr₄GaN₃(CN₂): space group P2₁/c (No. 14), a = 13.4778(2) Å, b = 7.4140(1) Å, c = 7.4440(1) Å, ges/gifchars/beta2.gif" BORDER=0 ALIGN="middle"> = 98.233(1)ges/entities/deg.gif">, and Z = 4].