AlH₃ 配合物研究进展

Aluminum hydride（AlH₃）is a new energetic material with higher energy density than aluminum. A large amount of hydrogen produced in the combustion of AlH₃，which significantly reduced the average molecular weight of gas products. AlH₃ can be used as an energetic component of explosives. However，the crystal transformation process of AlH₃ is extremely danger‑ ous and the unstable impurity phase is difficult to separate，thus it is challenge to obtain the pure stable phase α‑AlH₃. The prepa‑ ration of AlH₃ complexes can avoid the danger of crystal transformation of AlH₃，AlH₃ complexes retain the structural unit of AlH₃，avoid the dangerous crystal transformation process，and can be purified by recrystallization，which has a broad applica‑ tion prospect. This paper reviews the synthesis methods，coordination modes，types and applications of AlH₃ complexes，and fo‑ cuses on the effects of different ligands，such as tertiary amine，tertiary phosphine，ether and carbene，and different coordina‑ tion structures on the thermochemical properties of AlH₃ complexes. The future research direction of AlH₃ complexes is clarified.