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Sr2ZnPb crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Sr2ZnPb ribbons oriented in the (1, 0, 0) direction. Sr is bonded in a linear geometry to one Zn and one Pb atom. The Sr–Zn bond length is 3.46 Å. The Sr–Pb bond length is 3.33 Å. Zn is bonded in a linear geometry to two equivalent Sr atoms. Pb is bonded in a linear geometry to two equivalent Sr atoms.
Sr2ZnPb is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sr is bonded in a body-centered cubic geometry to four equivalent Zn and four equivalent Pb atoms. All Sr–Zn bond lengths are 3.51 Å. All Sr–Pb bond lengths are 3.51 Å. Zn is bonded in a body-centered cubic geometry to eight equivalent Sr atoms. Pb is bonded in a body-centered cubic geometry to eight equivalent Sr atoms.