Synthesis and Structure of Sr<sub>3</sub>GaN<sub>3</sub> and Sr<sub>6</sub>GaN<sub>5</sub>: Strontium Gallium Nitrides with Isolated Planar [GaN<sub>3</sub>]<sup>6-</sup> Anions
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Two new strontium gallium nitrides were obtained as single crystals by reaction in molten Na. Black Sr3GaN3 is isostructural with its transition metal analogues, Sr3MnN3, Ba3MnN3, Sr3CrN3, Ba3CrN3, and Ba3FeN3, and is the first example of a 313-ternary nitride containing only main group metals. It crystallizes in space group P63/m (No. 176) with a = 7.584(2) Å, c = 5.410(3) Å, and Z = 2. Black Sr6GaN5 is isostructural with Ca6GaN5 and also with its transition metal analogues, Ca6MnN5 and Ca6FeN5. It crystallizes in space group P63/mcm (No. 193) with a = 6.6667(6) Å, c = 12.9999(17) Å, and Z = 2. Both Ga compounds contain isolated planar [GaN3]6- nitridometallate anions of D3h symmetry.
创建时间：
2016-08-17
