Journal of Chemistry / 2013 / Article / Tab 3

Research Article

Synthesis and Characterization of Trivalent Cerium Complexes of p-tert-Butylcalix[4,6,8]Arenes: Effect of Organic Solvents

Table 3

1H-NMR spectra of the parent ligands and their Ce3+-p-t-butylcalix[ ]arene ( = 4, 6 and 8) complexes at 25°C.

SolventComplex patternAr–C(CH3)3Ar–CH2–ArAr–HAr–OH

Ligand-1CDCl31.26 (s, 9) 4.1 (br.d, 1)7.08 (s, 2) 9.6 (s, 1)
3.1 (br.d, 1)
Complex 1 3.10 (br, 1) 1.25 (s, 9) 4.3 (br.d, 1) 7.12 (s, 2)10.4 (s, 1)
3.8 (br.d, 1)
Ligand-2CDCl31.25 (s, 9) 3.77 (d, 1) 7.08 (s, 2) 10.0 (s, 1)  
Complex 22.57 (s, 1)1.26 (s, 9) 3.89 (s, 2) 7.14 (s, 2)10.3 (s, 1)
3.00 (d, 1)
Ligand-3CDCl31.24 (s, 9) 4.3 (br, d, 1) 7.10 (s, 2) 9.6 (s, 1)  
Complex 33.00 (s, 1)1.27 (s, 9) 4.3 (br, d, 1)7.14 (s, 2) 10.3 (s, 1)
3.4 (br, d, 1)

s: singlet, br: broad, d: doublet.