FIG. 10.
The bimodal structures of dissolved [Cu(aq)]2+. Top: panels [(a1) and (a2)] in liquid 1M HClO4 and panels [(b1) and (b2)] in frozen 1M HClO4. Bottom: panels [(c1) and (c2)] with 0.6M HClO4 in 40% 1,3-propanediol frozen glass and panels [(d1) and (d2)] with 0.6M HClO4 in 40% 1,5-pentanediol frozen glass. In the liquid and frozen 1M HClO4 solutions [panels (a2), (b1), and (b2)], the more distant axial oxygen is non-bonded and about 3 Å from Cu(ii). The supplementary material includes pdb files of these structures.
