Sr3In4Pb crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 11-coordinate geometry to four equivalent In(1), five equivalent In(2), and two equivalent Pb(1) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to two equivalent In(2), four equivalent In(1), and three equivalent Pb(1) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Sr(2), four equivalent Sr(1), three equivalent In(2), and one Pb(1) atom. In the second In site, In(2) is bonded in a 10-coordinate geometry to one Sr(2), five equivalent Sr(1), one In(2), and three equivalent In(1) atoms. Pb(1) is bonded in a 9-coordinate geometry to three equivalent Sr(2), four equivalent Sr(1), and two equivalent In(1) atoms.
Sr3In4Pb crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 11-coordinate geometry to four equivalent In(1), five equivalent In(2), and two equivalent Pb(1) atoms. There are a spread of Sr(1)-In(1) bond distances ranging from 3.56-3.81 Å. There are a spread of Sr(1)-In(2) bond distances ranging from 3.56-3.86 Å. Both Sr(1)-Pb(1) bond lengths are 3.55 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to two equivalent In(2), four equivalent In(1), and three equivalent Pb(1) atoms. Both Sr(2)-In(2) bond lengths are 3.64 Å. All Sr(2)-In(1) bond lengths are 3.72 Å. There is one shorter (3.54 Å) and two longer (3.60 Å) Sr(2)-Pb(1) bond lengths. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Sr(2), four equivalent Sr(1), three equivalent In(2), and one Pb(1) atom. There are two shorter (2.96 Å) and one longer (3.15 Å) In(1)-In(2) bond length. The In(1)-Pb(1) bond length is 3.10 Å. In the second In site, In(2) is bonded in a 10-coordinate geometry to one Sr(2), five equivalent Sr(1), one In(2), and three equivalent In(1) atoms. The In(2)-In(2) bond length is 3.01 Å. Pb(1) is bonded in a 9-coordinate geometry to three equivalent Sr(2), four equivalent Sr(1), and two equivalent In(1) atoms.