On copper(I) fluorides, the cuprophilic interaction, the preparation of copper nitride at room temperature, and the formation mechanism at elevated temperatures.

On copper(I) fluorides, the cuprophilic interaction, the preparation of copper nitride at room temperature, and the formation mechanism at elevated temperatures.
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关于氟化铜(I)、亲铜相互作用、氮化铜在室温下的制备以及高温下的形成机制

DOI:
10.1002/chem.201406136
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
F. Kraus
F. Kraus
中科院分区:
--
文献类型:
--
作者:
P. Woidy;A. J. Karttunen;M. Widenmeyer;R. Niewa;F. Kraus

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我们尝试合成迄今未知的二元氟化铜(I),取得了初步的成功和一个意外的结果:通过元素铜和氟化铜(II)在无水液氨中的歧化反应,得到了两种氟化铜(I)的简单NH 3配合物。其中一个提出了一个例子,在无限的[Cu 2(NH3)4]2+链与交替的Cu-Cu距离的配体未支持的“亲铜”相互作用。我们发现,两种铜(I)氟化物都可以在室温下很容易地转化为Cu 3 N,只需施加真空。此外,我们还通过热分析和原位中子衍射研究了Cu 3 N的经典合成路线的形成机制,该路线从CuF 2和流动的NH3开始,在环境温度和290 °C之间的温度范围内。反应在高温下进行,通过形成蓝色和无定形氨化物Cu(NH3)2F 2,CuF 2的重整,以及最后的氧化还原反应形成Cu 3 N。
Our attempts to synthesize the hitherto unknown binary copper(I) fluoride have led to first successes and a serendipitious result: By conproportionation of elemental copper and copper(II) fluoride in anhydrous liquid ammonia, two copper(I) fluorides were obtained as simple NH3complexes. One of them presents an example of ligand‐unsupported “cuprophilic” interactions in an infinite [Cu2(NH3)4]2+chain with alternating Cu–Cu distances. We discovered that both copper(I) fluorides can easily be converted into Cu3N at room temperature, just by applying a vacuum. Additionally, we investigated the formation mechanism of the classical synthesis route of Cu3N that starts with CuF2and flowing NH3in the temperature range between ambient and 290 °C by means of thermal analysis and in situ neutron diffraction. The reaction proceeds at elevated temperatures through the formation of a blue and amorphous ammoniate Cu(NH3)2F2, the reformation of CuF2, and finally the redox reaction to form Cu3N.
DOI: --
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影响因子: 4.6
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