BeYbF4 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. Yb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms.
BeYbF4 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded in a tetrahedral geometry to one F(1), one F(2), one F(3), and one F(4) atom. The Be(1)-F(1) bond length is 1.55 Å. The Be(1)-F(2) bond length is 1.55 Å. The Be(1)-F(3) bond length is 1.54 Å. The Be(1)-F(4) bond length is 1.54 Å. Yb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. There is one shorter (2.28 Å) and one longer (2.32 Å) Yb(1)-F(1) bond length. There is one shorter (2.31 Å) and one longer (2.39 Å) Yb(1)-F(2) bond length. There is one shorter (2.26 Å) and one longer (2.38 Å) Yb(1)-F(3) bond length. There is one shorter (2.27 Å) and one longer (2.30 Å) Yb(1)-F(4) bond length. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Be(1) and two equivalent Yb(1) atoms.