0000000000419187
AUTHOR
Etienne Levert
Luminescent P-Chirogenic Copper Clusters
P-chirogenic clusters of the cubanes [Cu4I4L4] (L = chiral phosphine) were prepared from (+)- and (-)-ephedrine with L = (S)- or (R)-(R)(Ph)(i-Pr)P (with R = CH3 (seven steps) or C17H35 (10 steps)) with e.e. up to 96%. The X-ray structure of [Cu4I4((R)-(CH3)(Ph)(i-Pr)P)4] confirmed the cubane structure with average Cu···Cu and Cu···I distances of 2.954 and 2.696 Å, respectively. The cubane structure of the corresponding [Cu4I4((S)-(CH3)(Ph)(i-Pr)P)4] was established by the comparison of the X-ray powder diffraction patterns, and the opposite optical activity of the (S)- and (R)-ligand-containing clusters was confirmed by circular dichroism spectroscopy. Small-angle X-ray scattering patterns…
CCDC 1424523: Experimental Crystal Structure Determination
Related Article: Antony Lapprand, Mathieu Dutartre, Naïma Khiri, Etienne Levert, Daniel Fortin, Yoann Rousselin, Armand Soldera, Sylvain Jugé and Pierre D. Harvey|2013|Inorg.Chem.|52|7958|doi:10.1021/ic400498j