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. 2015 Mar 18;2015(12):2145–2151. doi: 10.1002/ejic.201403209

Figure 1.

Figure 1

The two crystallographically determined molecular structures of Zr4 [(a) Zr4(sym) and (b) Zr4(asym)] and the molecular structure of Zr4Piv (c). Selected bond lengths [pm] and angles [°] for Zr4Piv: Zr1–O1 208.8(8), Zr1–O1′ 207.6(2), Zr2–O1 201.9(2), Zr1–O2 240.4(6), Zr1–O3 221.3(6), Zr2–O2 248.1(1), Zr2–O12 220.1(6), Zr2–O13 227.1(9), Zr2–O11 218.2(1), Zr1′–O10 218.1(1). Zr1–O1–Zr2 117.5(9), Zr1′–O1–Zr2 134.5(4), Zr1–O1–Zr1′ 106.2(2), Zr1–O2–Zr2 91.9(7), O12–Zr2–O13 57.15, O2–Zr1–O3 56.5(7), O1–Zr2–O12 147.8(6), O1–Zr2–O13 154.5(6), O1–Zr1–O2 75.4(3), O1–Zr2–O2 74.8(7), O1–Zr1–O3 131.3(7), O1–Zr2–O11 92.7(6), O1–Zr1′–O10 81.8(9).