SrPtIn4 crystallizes in the orthorhombic Cmcm space group. Sr(1) is bonded in a 15-coordinate geometry to two equivalent Pt(1), three equivalent In(3), four equivalent In(2), and six equivalent In(1) atoms. Pt(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), one In(3), and six equivalent In(1) atoms. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), three equivalent Pt(1), and one In(2) atom. In the second In site, In(2) is bonded in a distorted q6 geometry to four equivalent Sr(1), two equivalent In(1), and four equivalent In(3) atoms. In the third In site, In(3) is bonded in a 2-coordinate geometry to three equivalent Sr(1), one Pt(1), and four equivalent In(2) atoms.
SrPtIn4 crystallizes in the orthorhombic Cmcm space group. Sr(1) is bonded in a 15-coordinate geometry to two equivalent Pt(1), three equivalent In(3), four equivalent In(2), and six equivalent In(1) atoms. Both Sr(1)-Pt(1) bond lengths are 3.44 Å. There is one shorter (3.32 Å) and two longer (3.90 Å) Sr(1)-In(3) bond lengths. All Sr(1)-In(2) bond lengths are 3.67 Å. There are four shorter (3.37 Å) and two longer (3.59 Å) Sr(1)-In(1) bond lengths. Pt(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), one In(3), and six equivalent In(1) atoms. The Pt(1)-In(3) bond length is 2.69 Å. There are two shorter (2.75 Å) and four longer (2.83 Å) Pt(1)-In(1) bond lengths. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), three equivalent Pt(1), and one In(2) atom. The In(1)-In(2) bond length is 3.19 Å. In the second In site, In(2) is bonded in a distorted q6 geometry to four equivalent Sr(1), two equivalent In(1), and four equivalent In(3) atoms. All In(2)-In(3) bond lengths are 3.19 Å. In the third In site, In(3) is bonded in a 2-coordinate geometry to three equivalent Sr(1), one Pt(1), and four equivalent In(2) atoms.