Ca(MoO2)2 crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(4), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of corner and edge-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. In the second Mo site, Mo(2) is bonded to one O(2), two equivalent O(4), and three equivalent O(1) atoms to form a mixture of corner and edge-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and three equivalent Mo(2) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Mo(2), and two equivalent Mo(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Ca(1) and three equivalent Mo(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the fourth O site, O(4) is bonded to two equivalent Ca(1), one Mo(1), and two equivalent Mo(2) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids.
Ca(MoO2)2 crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Ca(1)-O(1) bond lengths are 2.37 Å. There is one shorter (2.53 Å) and one longer (2.62 Å) Ca(1)-O(2) bond length. Both Ca(1)-O(3) bond lengths are 2.33 Å. Both Ca(1)-O(4) bond lengths are 2.42 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(4), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of corner and edge-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Mo(1)-O(4) bond length is 2.18 Å. Both Mo(1)-O(2) bond lengths are 2.10 Å. There is one shorter (2.09 Å) and two longer (2.15 Å) Mo(1)-O(3) bond lengths. In the second Mo site, Mo(2) is bonded to one O(2), two equivalent O(4), and three equivalent O(1) atoms to form a mixture of corner and edge-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 44-55°. The Mo(2)-O(2) bond length is 2.12 Å. Both Mo(2)-O(4) bond lengths are 2.18 Å. There is one shorter (2.07 Å) and two longer (2.10 Å) Mo(2)-O(1) bond lengths. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1) and three equivalent Mo(2) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Ca(1), one Mo(2), and two equivalent Mo(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Ca(1) and three equivalent Mo(1) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids. In the fourth O site, O(4) is bonded to two equivalent Ca(1), one Mo(1), and two equivalent Mo(2) atoms to form a mixture of distorted corner and edge-sharing OCa2Mo3 trigonal bipyramids.