Iron hydrides formation in interstellar clouds

Details Iron hydrides formation in interstellar clouds Iron hydrides formation in interstellar clouds

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....87..328b&link_type=abstract

Astronomy and Astrophysics, vol. 87, no. 3, July 1980, p. 328, 329.

Astronomy and Astrophysics

Astrophysics

1

Cryochemistry, Interstellar Chemistry, Interstellar Gas, Iron Compounds, Metal Hydrides, Molecular Gases, Abundance, Transition Metals

Scientific paper

A recent Moessbauer study with Fe-57 in a solid hydrogen or hydrogen-argon matrix demonstrated the formation of an iron hydride molecule (FeH2) at 2.5-5 K. Following this and other studies, the possible existence of iron hydride molecules in interstellar clouds is proposed. In clouds, the iron hydrides FeH and FeH2 would be formed only on grains, by encounters of H atoms or H2 molecules with Fe atoms which are adsorbed on the grains. The other transition metals, Sc, Ti, V, Cr, Mn, Co, N, Cd and also Cu and Ca form hydrides of the type M-H, which could be responsible, at least in part, for the depletion of these metals in clouds.

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