DOE OSTI2020
KBaGd(MoO4)3 is Zircon-derived structured and crystallizes in the monoclinic C2 space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.75–2.94 Å. Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.70–2.91 Å. There are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Gd–O bond distances ranging from 2.36–2.54 Å. In the second Gd3+ site, Gd3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Gd–O bond distances ranging from 2.42–2.47 Å. There are four inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.78 Å) and two longer (1.82 Å) Mo–O bond length. In the second Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.78 Å) and two longer (1.83 Å) Mo–O bond length. In the third Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.76–1.88 Å. In the fourth Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.77–1.89 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Ba2+, and one Mo6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Ba2+, and one Mo6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Gd3+, and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Ba2+, one Gd3+, and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Gd3+, and one Mo6+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Gd3+, and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Ba2+, and one Mo6+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Ba2+, and one Mo6+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Gd3+ and one Mo6+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Gd3+ and one Mo6+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Ba2+, and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Ba2+, and one Mo6+ atom.