Eu(OsB)4 is alpha Pu-derived structured and crystallizes in the tetragonal P4_2/n space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Os(1) and eight equivalent B(1) atoms. Os(1) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and five equivalent B(1) atoms. B(1) is bonded in a 8-coordinate geometry to two equivalent Eu(1), five equivalent Os(1), and one B(1) atom.
Eu(OsB)4 is alpha Pu-derived structured and crystallizes in the tetragonal P4_2/n space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Os(1) and eight equivalent B(1) atoms. There are four shorter (3.19 Å) and four longer (3.22 Å) Eu(1)-Os(1) bond lengths. There are four shorter (2.96 Å) and four longer (3.04 Å) Eu(1)-B(1) bond lengths. Os(1) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and five equivalent B(1) atoms. There are a spread of Os(1)-B(1) bond distances ranging from 2.16-2.74 Å. B(1) is bonded in a 8-coordinate geometry to two equivalent Eu(1), five equivalent Os(1), and one B(1) atom. The B(1)-B(1) bond length is 1.77 Å.