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From the work of (1967AD05) on the ³He(³He, n)⁵Be reaction (see ⁵Be) it follows that ⁵H is unstable by more than 2.1 MeV to decay into ³H + 2n (using Coulomb corrections based on the 16.7 MeV states in ⁵He - ⁵Li). [With the "conventional" correction (please refer to the Introduction in (1966LA04) ⁵H is unbound by > 0.7 MeV.] A study of ⁹Be(α, ⁸B)⁵H at E_α = 129 MeV shows no evidence for sharp ⁵H states for several MeV above ³H + 2n (1968MC02). In ³H(t, p)⁵H, at E_t = 22.25 MeV, a broad peak appears in the proton spectrum which may correspond to a ⁵H state at ³H + 2n + 1.8 MeV, but which could also result from a four-body breakup (1968YO06). Several recent attempts to observe ⁵H formation in ⁷Li(π^-, pn) and ⁷Li(π^-, d) have been unsuccessful: see (1965CO1D, 1968BO32, 1969MI10). See (1966LA04) for a review of the earlier work, (1965AR04), and (1965AR08, 1966DE1E, 1968CE01, 1970WA1G, 1971WA08).