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. 2021 Dec 23;144(1):195–211. doi: 10.1021/jacs.1c08214

Figure 2.

Figure 2

Color change of a single crystal of complex 1 mounted on a cactus needle used for the single-crystal X-ray diffraction experiment at 40 K (left, translucent ruby red) and 80 K (right, dark red) in a helium gas stream.