Wilson William W, Vij Ashwani, Vij Vandana, Bernhardt Eduard, Christe Karl O
ERC, Inc. and Space and Missile Propulsion Division, Air Force Research Laboratory (AFRL/PRSP), Edwards Air Force Base, CA 93524, uSA.
Chemistry. 2003 Jun 16;9(12):2839-44. doi: 10.1002/chem.200304973.
Metathetical processes were used to convert N5SbF6 into N5[B(CF3)4] and (N5)2SnF6. The latter salt is especially noteworthy because it contains two N5+ ions per anion, thus demonstrating that salts with touching polynitrogen cations can be prepared. This constitutes an important milestone towards our ultimate goal of synthesizing a stable, ionic nitrogen allotrope. The stepwise decomposition of (N5)2SnF6 yielded N5SnF5. Multinuclear NMR spectra show that in HF the SnF5- ion exists as a mixture of Sn2F(10)(2-) and Sn4F(20)(4-) ions. Attempts to isolate FN5 from the thermolysis of (N5)2SnF6 were unsuccessful, yielding only the expected decomposition products, FN3, N2, trans-N2F2, NF3, and N2.
复分解过程被用于将N5SbF6转化为N5[B(CF3)4]和(N5)2SnF6。后一种盐特别值得注意，因为每个阴离子含有两个N5+离子，从而证明了可以制备具有相互接触的多氮阳离子的盐。这是朝着我们合成稳定的离子型氮同素异形体这一最终目标迈出的重要里程碑。(N5)2SnF6的逐步分解产生了N5SnF5。多核核磁共振光谱表明，在HF中，SnF5-离子以Sn2F(10)(2-)和Sn4F(20)(4-)离子的混合物形式存在。尝试从(N5)2SnF6的热分解中分离出FN5未成功，仅产生了预期的分解产物FN3、N2、反式-N2F(2)、NF3和N2。
