SrLaBr5 crystallizes in the monoclinic P2_1/m space group. Sr(1) is bonded to one Br(1), one Br(4), two equivalent Br(5), and three equivalent Br(3) atoms to form distorted edge-sharing SrBr7 pentagonal bipyramids. La(1) is bonded in a 8-coordinate geometry to one Br(5), two equivalent Br(1), two equivalent Br(4), and three equivalent Br(2) atoms. There are five inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted T-shaped geometry to one Sr(1) and two equivalent La(1) atoms. In the second Br site, Br(2) is bonded in a trigonal non-coplanar geometry to three equivalent La(1) atoms. In the third Br site, Br(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Sr(1) atoms. In the fourth Br site, Br(4) is bonded in a distorted T-shaped geometry to one Sr(1) and two equivalent La(1) atoms. In the fifth Br site, Br(5) is bonded in a distorted T-shaped geometry to two equivalent Sr(1) and one La(1) atom.
SrLaBr5 crystallizes in the monoclinic P2_1/m space group. Sr(1) is bonded to one Br(1), one Br(4), two equivalent Br(5), and three equivalent Br(3) atoms to form distorted edge-sharing SrBr7 pentagonal bipyramids. The Sr(1)-Br(1) bond length is 3.34 Å. The Sr(1)-Br(4) bond length is 3.46 Å. Both Sr(1)-Br(5) bond lengths are 3.08 Å. There are two shorter (3.03 Å) and one longer (3.12 Å) Sr(1)-Br(3) bond length. La(1) is bonded in a 8-coordinate geometry to one Br(5), two equivalent Br(1), two equivalent Br(4), and three equivalent Br(2) atoms. The La(1)-Br(5) bond length is 3.17 Å. Both La(1)-Br(1) bond lengths are 3.08 Å. Both La(1)-Br(4) bond lengths are 3.14 Å. There are two shorter (3.06 Å) and one longer (3.19 Å) La(1)-Br(2) bond length. There are five inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted T-shaped geometry to one Sr(1) and two equivalent La(1) atoms. In the second Br site, Br(2) is bonded in a trigonal non-coplanar geometry to three equivalent La(1) atoms. In the third Br site, Br(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Sr(1) atoms. In the fourth Br site, Br(4) is bonded in a distorted T-shaped geometry to one Sr(1) and two equivalent La(1) atoms. In the fifth Br site, Br(5) is bonded in a distorted T-shaped geometry to two equivalent Sr(1) and one La(1) atom.