# Have IH₃ and IH₅ already been synthesized?

I've seen a paper by Sikalov [1] that says that $$\ce{IH3}$$ and $$\ce{IH5}$$ should be observable. Has anyone actually tried to synthesize such molecules?

### References

1. Sikalov, A. A. Hypervalent Halogen Hydrides $$\ce{HalH_n}$$ ($$\ce{Hal}$$ = $$\ce{Cl},$$ $$\ce{Br},$$ $$\ce{I};$$ $$n = 3, 5, 7)$$: DFT and Ab Initio Stability Prediction. Theor Chem Acc 2019, 139 (1), 8. DOI: 10.1007/s00214-019-2524-0.
• I've done some literature research but couldn't find anything... – Mr.X Dec 13 '19 at 15:32
• Under high pressure, maybe? Also is there a reason to put iodine first not hydrogen as in ordinary hydrogen iodide? – Oscar Lanzi Dec 13 '19 at 15:46
• Oscar Lanzi , in this case, some of Hydrogen atoms are negatively charged. That's probably why the author uses such notation. – Mr.X Dec 13 '19 at 16:29