LiBeF4NH2NH3 crystallizes in the orthorhombic Pna2_1 space group. The structure consists of four ammonia molecules and four ammonia molecules inside a LiBeF4 framework. In the LiBeF4 framework, Li(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form LiF4 tetrahedra that share corners with four equivalent Be(1)F4 tetrahedra. Be(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form BeF4 tetrahedra that share corners with four equivalent Li(1)F4 tetrahedra. There are four inequivalent F sites. In the first F site, F(1) is bonded in a bent 120 degrees geometry to one Li(1) and one Be(1) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to one Li(1) and one Be(1) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Li(1) and one Be(1) atom. In the fourth F site, F(4) is bonded in a bent 120 degrees geometry to one Li(1) and one Be(1) atom.
LiBeF4NH2NH3 crystallizes in the orthorhombic Pna2_1 space group. The structure consists of four ammonia molecules and four ammonia molecules inside a LiBeF4 framework. In the LiBeF4 framework, Li(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form LiF4 tetrahedra that share corners with four equivalent Be(1)F4 tetrahedra. The Li(1)-F(1) bond length is 1.90 Å. The Li(1)-F(2) bond length is 1.91 Å. The Li(1)-F(3) bond length is 1.86 Å. The Li(1)-F(4) bond length is 1.86 Å. Be(1) is bonded to one F(1), one F(2), one F(3), and one F(4) atom to form BeF4 tetrahedra that share corners with four equivalent Li(1)F4 tetrahedra. The Be(1)-F(1) bond length is 1.58 Å. The Be(1)-F(2) bond length is 1.59 Å. The Be(1)-F(3) bond length is 1.55 Å. The Be(1)-F(4) bond length is 1.55 Å. There are four inequivalent F sites. In the first F site, F(1) is bonded in a bent 120 degrees geometry to one Li(1) and one Be(1) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to one Li(1) and one Be(1) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Li(1) and one Be(1) atom. In the fourth F site, F(4) is bonded in a bent 120 degrees geometry to one Li(1) and one Be(1) atom.