Extended Data Fig. 6: Nuclear magnetic resonance (NMR) characterization of the Cd26Se17I18(PPr3)10 cluster.
From: Precision synthesis of a CdSe semiconductor nanocluster via cation exchange
a, 31P{1H} NMR spectra of free PPr3 ligand, CdI2(PPr3)2 complex, and Cd26Se17I18(PPr3)10 cluster. A 3:3:3:1 splitting of 10 phosphines is observed for the cluster sample. The satellite peaks observed in both complex and cluster are due to Cd-P couplings. b, Corresponding 1H NMR spectra. c, Amplified 1H NMR spectrum of the cluster at aliphatic region. The four chemically inequivalent phosphines are indicated by numbers (P1 to P4), which matches the C3 symmetry of the structure (left). The sample is measured in CDCl3 at room temperature. The solvent peaks are labelled with *.
