Ge7H4O17(H5O2)2(H2O)2 crystallizes in the triclinic P1 space group. The structure consists of two molecular hydrogen;dihydrate molecules and two water molecules inside a Ge7H4O17 framework. In the Ge7H4O17 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(2)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the third Ge site, Ge(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(2), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(14), one O(15), one O(16), one O(3), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(3)O6 octahedra. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(14), one O(5), and one O(8) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-64°. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(15), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-61°. In the seventh Ge site, Ge(7) is bonded to one O(10), one O(13), one O(16), and one O(7) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-59°. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted linear geometry to one O(18) and one O(8) atom. In the second H site, H(4) is bonded in a single-bond geometry to one O(18) atom. In the third H site, H(5) is bonded in a single-bond geometry to one O(18) atom. In the fourth H site, H(10) is bonded in a single-bond geometry to one O(7) atom. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(3), and one Ge(4) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Ge(1), one Ge(7), and one H(10) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(5), and one H(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(6) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(7) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(18) is bonded in a distorted water-like geometry to one H(3), one H(4), and one H(5) atom.
Ge7H4O17(H5O2)2(H2O)2 crystallizes in the triclinic P1 space group. The structure consists of two molecular hydrogen;dihydrate molecules and two water molecules inside a Ge7H4O17 framework. In the Ge7H4O17 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(2)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. The Ge(1)-O(1) bond length is 1.91 Å. The Ge(1)-O(2) bond length is 2.01 Å. The Ge(1)-O(3) bond length is 1.94 Å. The Ge(1)-O(5) bond length is 1.85 Å. The Ge(1)-O(6) bond length is 1.86 Å. The Ge(1)-O(7) bond length is 2.07 Å. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. The Ge(2)-O(10) bond length is 1.88 Å. The Ge(2)-O(2) bond length is 1.94 Å. The Ge(2)-O(3) bond length is 1.90 Å. The Ge(2)-O(4) bond length is 2.00 Å. The Ge(2)-O(8) bond length is 2.00 Å. The Ge(2)-O(9) bond length is 1.84 Å. In the third Ge site, Ge(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(2), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. The Ge(3)-O(1) bond length is 2.03 Å. The Ge(3)-O(11) bond length is 1.85 Å. The Ge(3)-O(12) bond length is 1.86 Å. The Ge(3)-O(13) bond length is 1.86 Å. The Ge(3)-O(2) bond length is 2.01 Å. The Ge(3)-O(4) bond length is 1.99 Å. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(14), one O(15), one O(16), one O(3), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(3)O6 octahedra. The Ge(4)-O(1) bond length is 2.04 Å. The Ge(4)-O(14) bond length is 1.84 Å. The Ge(4)-O(15) bond length is 1.87 Å. The Ge(4)-O(16) bond length is 1.87 Å. The Ge(4)-O(3) bond length is 2.10 Å. The Ge(4)-O(4) bond length is 1.95 Å. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(14), one O(5), and one O(8) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-64°. The Ge(5)-O(11) bond length is 1.74 Å. The Ge(5)-O(14) bond length is 1.74 Å. The Ge(5)-O(5) bond length is 1.76 Å. The Ge(5)-O(8) bond length is 1.85 Å. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(15), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-61°. The Ge(6)-O(12) bond length is 1.75 Å. The Ge(6)-O(15) bond length is 1.77 Å. The Ge(6)-O(6) bond length is 1.79 Å. The Ge(6)-O(9) bond length is 1.77 Å. In the seventh Ge site, Ge(7) is bonded to one O(10), one O(13), one O(16), and one O(7) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-59°. The Ge(7)-O(10) bond length is 1.76 Å. The Ge(7)-O(13) bond length is 1.73 Å. The Ge(7)-O(16) bond length is 1.75 Å. The Ge(7)-O(7) bond length is 1.86 Å. There are four inequivalent H sites. In the first H site, H(3) is bonded in a distorted linear geometry to one O(18) and one O(8) atom. The H(3)-O(18) bond length is 1.63 Å. The H(3)-O(8) bond length is 1.03 Å. In the second H site, H(4) is bonded in a single-bond geometry to one O(18) atom. The H(4)-O(18) bond length is 0.98 Å. In the third H site, H(5) is bonded in a single-bond geometry to one O(18) atom. The H(5)-O(18) bond length is 0.99 Å. In the fourth H site, H(10) is bonded in a single-bond geometry to one O(7) atom. The H(10)-O(7) bond length is 0.99 Å. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(3), and one Ge(4) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(5) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Ge(1), one Ge(7), and one H(10) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(5), and one H(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(6) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(7) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(18) is bonded in a distorted water-like geometry to one H(3), one H(4), and one H(5) atom.