Sr2RhH5 crystallizes in the tetragonal I4mm space group. Sr(1) is bonded in a distorted q6 geometry to two equivalent H(2) and eight equivalent H(1) atoms. Rh(1) is bonded in a square pyramidal geometry to one H(2) and four equivalent H(1) atoms. There are two inequivalent H sites. In the first H site, H(2) is bonded to four equivalent Sr(1) and one Rh(1) atom to form a mixture of corner, edge, and face-sharing HSr4Rh square pyramids. In the second H site, H(1) is bonded to four equivalent Sr(1) and one Rh(1) atom to form a mixture of corner, edge, and face-sharing HSr4Rh square pyramids.
Sr2RhH5 crystallizes in the tetragonal I4mm space group. Sr(1) is bonded in a distorted q6 geometry to two equivalent H(2) and eight equivalent H(1) atoms. Both Sr(1)-H(2) bond lengths are 2.67 Å. There are four shorter (2.69 Å) and four longer (2.74 Å) Sr(1)-H(1) bond lengths. Rh(1) is bonded in a square pyramidal geometry to one H(2) and four equivalent H(1) atoms. The Rh(1)-H(2) bond length is 1.80 Å. All Rh(1)-H(1) bond lengths are 1.67 Å. There are two inequivalent H sites. In the first H site, H(2) is bonded to four equivalent Sr(1) and one Rh(1) atom to form a mixture of corner, edge, and face-sharing HSr4Rh square pyramids. In the second H site, H(1) is bonded to four equivalent Sr(1) and one Rh(1) atom to form a mixture of corner, edge, and face-sharing HSr4Rh square pyramids.