Materials Data on Ca5Ir by Materials Project
Ca5Ir crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ca5Ir sheets oriented in the (0, 0, 1) direction. there are three inequivalent Ca sites. In the first Ca site, Ca is bonded in a bent 150 degrees geometry to two equivalent Ir atoms. There are one shorter (2.85 Å) and one longer (2.90 Å) Ca–Ir bond lengths. In the second Ca site, Ca is bonded in a single-bond geometry to one Ir atom. The Ca–Ir bond length is 3.16 Å. In the third Ca site, Ca is bonded in a water-like geometry to two equivalent Ir atoms. There are one shorter (2.95 Å) and one longer (3.00 Å) Ca–Ir bond lengths. Ir is bonded in a 8-coordinate geometry to eight Ca atoms.
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