Skip to main content
. 2013 Oct 25;4:2684. doi: 10.1038/ncomms3684

Figure 2. UV-Vis diffuse-reflectance spectra of NOF powders and their ligands.

Figure 2

(a) The characteristic absorption band assigned to the transition located on the nitro functionality in 2nIm remains unaffected upon the coordination of Zn(II) in NOF-1. As anticipated, [Co(2nIm)2]n gives rise to additional absorption bands in the visible region, which are characteristic of Co(II) in a tetrahedral coordination environment. (b) A bathochromic shift in the absorption band is observed in NOF-2, on the coordination of zinc, which suggests enhanced π-conjugation in the nitroaromatic ligand.