Click on a link to retrieve supplementary data submitted for this article:

• Crystal structure data
• (CIF format, )

• Tables S1–5 and captions for supplementary figures
• (PDF format, )

Supplementary figures (see above file for full captions):

• Fig. S1 Fourier transforms and fits of 1–4, 7 and aqueous and dimethylsulfoxide solutions of copper(II) perchlorate
• (PDF format, )

• Fig. S2a The fit and the individual contribution of the different scattering paths of the EXAFS data of 2
• (PDF format, )

• Fig. S2b The fit and the individual contribution of the different scattering paths of the EXAFS data of 1
• (PDF format, )

• Fig. S2c The fit and the individual contribution of the different scattering paths of the EXAFS data of an aqueous solution of copper(II) perchlorate
• (PDF format, )

• Fig. S2d The fit and the individual contribution of the different scattering paths of the EXAFS data of 3
• (PDF format, )

• Fig. S2e The fit and the individual contribution of the different scattering paths of the EXAFS data of 7
• (PDF format, )

• Fig. S2f The fit and the individual contribution of the different scattering paths of the EXAFS data of 4
• (PDF format, )

• Fig. S2g The fit and the individual contribution of the different scattering paths of the EXAFS data of a dimethylsulfoxide solution of copper(II) perchlorate
• (PDF format, )

Various models for 2.0 M acidic aqueous solutions of copper(II) perchlorate:

• Fig. S3a LAXS radial distribution curves (upper) and experimental RDF (middle) using an elongated square pyramidal model
• (PDF format, )

• Fig. S3a Reduced LAXS intensity functions (lower)
• (PDF format, )

• Fig. S3b LAXS radial distribution curves (upper) and experimental RDF (middle) using a trigonally elongated bipyramidal model
• (PDF format, )

• Fig. S3b Reduced LAXS intensity functions (lower)
• (PDF format, )

• Fig. S3c LAXS radial distribution curves (upper) and experimental RDF (middle) using a regular square pyramidal model
• (PDF format, )

• Fig. S3c Reduced LAXS intensity functions (lower)
• (PDF format, )

• Fig. S3d LAXS radial distribution curves (upper) and experimental RDF (middle) using a regular trigonal bipyramidal model
• (PDF format, )

• Fig. S3d Reduced LAXS intensity functions (lower)
• (PDF format, )

• Fig. S4 Normalized absorption edges of the studied samples
• (PDF format, )

• Fig. S5 The crystal structure of 6
• (PDF format, )