Novel Ultrahigh-Energy Materials
Novel Ultrahigh-Energy Materials
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DOI:
10.1007/s10573-005-0031-1
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发表时间:
2005-05
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影响因子:
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通讯作者:
M. B. Talawar;R. Sivabalan;S. N. Asthana;H. Singh
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文献类型:
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作者:
M. B. Talawar;R. Sivabalan;S. N. Asthana;H. Singh
This paper reviews the recent work carried out in the field of modern high-energy materials (HEMs) with the emphasis on homoleptic polynitrogen compounds. A large volume of quantum-chemical investigations have predicted the possibility of existence of polynitrogen compounds not only as short-lived transient species but also in the form of isolable discrete molecules. Despite the theoretical speculations, only a few polynitrogen ions are known today in addition to well-entrenched N1−3discovered almost 100 year ago. Extraordinary potential of these green molecules to deliver high amounts of energy in comparison with today’s and tomorrow’s most powerful HEMs, namely, hexanitrohexaazaisowurtzitane (CL-20) and octanitrocubane (ONC), has fuelled the imagination of propellant and explosive engineers and technologists. Research activities are in progress in many quantum-chemical schools to explore the possibility of other promising polynitrogen compounds. After the recent discovery of key synthons/building blocks Mg(N5)2, N1+5SbF1−6, N1+5SbF11, N1+5, N1+5SnF6, and N1+5Sn(CF3)4, the wealth of polynitrogen compounds is just waiting to be harvested by the HEMs community. There are ambitious plans all over the globe to realize N60, which only prove a eco-friendly dense powerhouse of energy.