Re is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are four inequivalent Re sites. In the first Re site, Re(1) is bonded to six equivalent Re(1) and six Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. In the second Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. In the third Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. In the fourth Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra.
Re is alpha Samarium structured and crystallizes in the trigonal R-3m space group. There are four inequivalent Re sites. In the first Re site, Re(1) is bonded to six equivalent Re(1) and six Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. All Re(1)-Re(1) bond lengths are 2.77 Å. All Re(1)-Re(2,2) bond lengths are 2.75 Å. In the second Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. All Re(2)-Re(1) bond lengths are 2.75 Å. There are three shorter (2.74 Å) and six longer (2.77 Å) Re(2)-Re(2,2) bond lengths. In the third Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. All Re(2)-Re(2) bond lengths are 2.77 Å. In the fourth Re site, Re(2) is bonded to three equivalent Re(1) and nine Re(2,2) atoms to form a mixture of face, corner, and edge-sharing ReRe12 cuboctahedra. There are three shorter (2.74 Å) and six longer (2.77 Å) Re(2)-Re(2,2) bond lengths.