Ba(RhPb2)3 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent Pb(1) and four equivalent Pb(2) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 10-coordinate geometry to three equivalent Rh(1), one Pb(4), three equivalent Pb(2), and three equivalent Pb(3) atoms. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Pb(4) and six equivalent Pb(1) atoms. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to two equivalent Ba(1) and three equivalent Rh(2) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and three equivalent Rh(1) atoms. In the third Pb site, Pb(3) is bonded in a 6-coordinate geometry to six equivalent Rh(1) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one Rh(2) and two equivalent Rh(1) atoms.
Ba(RhPb2)3 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent Pb(1) and four equivalent Pb(2) atoms. All Ba(1)-Pb(1) bond lengths are 3.58 Å. All Ba(1)-Pb(2) bond lengths are 3.61 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 10-coordinate geometry to three equivalent Rh(1), one Pb(4), three equivalent Pb(2), and three equivalent Pb(3) atoms. There are two shorter (3.07 Å) and one longer (3.15 Å) Rh(1)-Rh(1) bond length. The Rh(1)-Pb(4) bond length is 2.74 Å. There are two shorter (2.75 Å) and one longer (3.03 Å) Rh(1)-Pb(2) bond length. There is one shorter (2.73 Å) and two longer (2.92 Å) Rh(1)-Pb(3) bond lengths. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Pb(4) and six equivalent Pb(1) atoms. The Rh(2)-Pb(4) bond length is 2.66 Å. There are two shorter (2.81 Å) and four longer (2.84 Å) Rh(2)-Pb(1) bond lengths. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to two equivalent Ba(1) and three equivalent Rh(2) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to two equivalent Ba(1) and three equivalent Rh(1) atoms. In the third Pb site, Pb(3) is bonded in a 6-coordinate geometry to six equivalent Rh(1) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one Rh(2) and two equivalent Rh(1) atoms.