Two new structurally related strontium gallium nitrides: Sr4GaN3O and Sr4GaN3(CN2).
Two new structurally related strontium gallium nitrides: Sr4GaN3O and Sr4GaN3(CN2).
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两种新的结构相关的氮化锶镓：Sr4GaN3O 和 Sr4GaN3(CN2)。
DOI：
10.1021/ic051542q
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发表时间：
2006
影响因子：
4.6
通讯作者：
S. Clarke
中科院分区：
文献类型：
--
作者：
P. Mallinson;Z. Gál;S. Clarke
报道了氧氮化锶镓Sr（4）GaN（3）O和氮化碳二亚胺Sr（4）GaN（3）（CN（2））的单晶体的合成。红色Sr（4）GaN（3）O在空间群Pbca（No.61）中结晶，a = 7.4002（1）埃，B = 24.3378（5）埃，c = 7.4038（1）埃，Z = 8，如在150 K下的单晶X射线衍射测量所确定的。该结构可以被视为由含有以"人字形"方式排列的隔离的[GaN（3）]（6-）三角形阴离子的双层的板[Sr（4）GaN（3）]（2+）组成，并且这些板被O（2-）阴离子隔开。棕色Sr（4）GaN（3）（CN（2））具有密切相关的结构，其中Sr（4）GaN（3）O结构中的氧化物阴离子被几乎线性的碳二亚胺[CN（2）]（2-）阴离子[Sr（4）GaN（3）（CN（2））：空间群P2（1）/c（No.14），a = 13.4778（2）埃，B = 7.4140（1）埃，c = 7.4440（1）埃，β = 98.233（1）度，Z = 4]。
The strontium gallium oxynitride Sr(4)GaN(3)O and nitride-carbodiimide Sr(4)GaN(3)(CN(2)) are reported, synthesized as single crystals from molten sodium at 900 degrees C. Red Sr(4)GaN(3)O crystallizes in space group Pbca (No. 61) with a = 7.4002(1) Angstroms, b = 24.3378(5) Angstroms, c = 7.4038(1) Angstroms, and Z = 8, as determined from single-crystal X-ray diffraction measurements at 150 K. The structure may be viewed as consisting of slabs [Sr(4)GaN(3)](2+) containing double layers of isolated [GaN(3)](6-) triangular anions arranged in a "herringbone" fashion, and these slabs are separated by O(2-) anions. Brown Sr(4)GaN(3)(CN(2)) has a closely related structure in which the oxide anions in the Sr(4)GaN(3)O structure are replaced by almost linear carbodiimide [CN(2)](2-) anions [Sr(4)GaN(3)(CN(2)): space group P2(1)/c (No. 14), a = 13.4778(2) Angstroms, b = 7.4140(1) Angstroms, c = 7.4440(1) Angstroms, beta = 98.233(1) degrees, and Z = 4].