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Chemistry of Beryllium in liquid Ammonia and the Usage of Fluoride Ion Acceptors for the Synthesis of Nitrogen Containing Compounds

铍在液氨中的化学性质以及氟离子受体在含氮化合物合成中的应用

基本信息

批准号：
189246818
负责人：
Professor Dr. Florian Kraus
金额：
--
依托单位：
Fachgebiet Anorganische Chemie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/189246818?language=en
关键词：
Chemistry Beryllium liquid Ammonia Usage

项目摘要

In this proposal we would like to explore the basic chemistry of beryllium in liquid ammonia solution.Additionally, the reaction of fluoride ion acceptors, like Be2+, with metal fluorides should open an access to mixed anionic compounds containing N and F, and finally lead to nitrides.These nitrogen and fluorine containing classes of compounds are - with few exceptions - unknown. However, they should feature interesting and commercially usable magnetic, optic, or even superconducting properties as the oxides do, which are most often a lot easier to synthesize.Therfore, the chemical reactions of beryllium compounds with ammonia, hydrazine, amides, imides and nitrides are to be explored in solid state reactions as well as in liquid ammonia solution. Beryllium amide, imide and nitride is to be reacted with various metal fluorides.Our previous works have been extremely successful. We have shown that the beryllium cation can be used as a fluoride ion acceptor in liquid ammonia. This cleared the way for a continuative, rich beryllium chemistry in liquid ammonia: The tetraammine beryllium cation was structurally characterized for the first time, and its hydrolysis products in liquid ammonia were elucidated.Diammine difluorido beryllium(II) acts as a strong fluoride ion acceptor as it is able to abtract a fluoride ion from the almost insoluble metal tetrafluorides. This way ammine trifluorido beryllates(II) are formed.

在这项建议中，我们想要探索在液氨溶液中铍的基本化学。此外，氟离子受体，如Be2+，与金属氟化物的反应应该打开一个含有N和F的混合阴离子化合物的通道，最终产生氮化物。这些含氮和含氟的化合物类别是未知的--除了少数例外。然而，它们应该具有有趣的和商业上可用的磁性、光学甚至超导性质，就像氧化物一样，这些性质通常更容易合成。因此，铍化合物与氨、肼、酰胺、亚胺和氮化物的化学反应不仅要在液态氨溶液中进行，而且要在固态反应中进行探索。铍、酰亚胺和氮化物要与各种金属氟化物反应，我们以前的工作已经非常成功。结果表明，铍离子可以作为氟离子在液氨中的受体。这为液氨中连续的、丰富的铍化学扫清了道路：首次对四胺铍阳离子进行了结构表征，并阐明了其在液氨中的水解产物。二氟化铍(II)是一种强氟离子受体，因为它能够从几乎不溶于水的金属四氟化物中吸收氟离子。这样就形成了三氟化铍酸胺(II)。