Materials Data on Er(BRu)4 by Materials Project
Er(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. Er3+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of Er–B bond distances ranging from 2.96–3.21 Å. Ru+2.25+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.14–2.28 Å. B3- is bonded in a 6-coordinate geometry to three equivalent Er3+, five equivalent Ru+2.25+, and one B3- atom. The B–B bond length is 1.78 Å.