B12H122–-Based Metal (Cu2+, Ni2+, Zn2+) Complexes as Hypergolic Fuels with Superior Hypergolicity

Zejun Zhang, Yanqiang Zhang, Zhimin Li, Nianming Jiao, Long Liu, Suojiang Zhang

Index: 10.1002/ejic.201701206

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Abstract

In hypergolic propellants, hypergolicity is an extremely important parameter in evaluating fuels. In this study, a new family of hypergolic metal (Cu2+, Ni2+, Zn2+) complexes with B12H122– were synthesized and fully characterized. Two of these six complexes exhibited ultrashort ignition delay times (ca. 1 ms), with white fuming nitric acid as the oxidizer, besides good physicochemical properties (decomposition temperatures: 221.8–286.3 °C; densities: 1.215–1.264 g cm–3). The results demonstrate their promising applications in bipropellant formulations. A new family of hypergolic metal (Cu2+, Ni2+, Zn2+) complexes with B12H122– were designed and synthesized. Two of these six complexes {[Cu(C5H6N2)4]B12H12 and [Ni(C5H6N2)6]B12H12} exhibited ultrashort ignition delay times (ca. 1 ms), with white fuming nitric acid as the oxidizer, which demonstrated their promising applications in bipropellant formulations.