SUPPLEMENTRY INFORMATION
Oxidation of substituted benzyl amines using a phenoxo bridged dimeric
nickel(II) complex: Synthesis, crystal structure and catalytic activity
Robin Kumar, Ravinder Kumar, KuldeepMahiya and PavanMathur*
Department of Chemistry, University of Delhi, Delhi-110007, India.
Email: pavanmat@yahoo.co.in
1. Fig. S1.TGA curve of dinickel complex
2. Fig. S2.1H-NMR Spectra of p-methoxybenzamide
3. Fig. S3.1H-NMR spectra of p-methyl benzamide
4. Fig. S4.1H-NMR spectra of o-chlorobenzamide
5. Fig. S5.1H-NMR Spectra of 3,4-dichloro benzamide
6. Fig. S6.1H-NMR Spectra of iso-nicotinamide
Conductivity measurements
The molar conductivity values are measured in DMF. The value is found to be 48.0 S
cm2mol-1 for [Ni2(L)2(NO3)2]. This indicates that there is weak ionization of the dimeric
complex in a coordinating solvent like DMF.
Thermogravimetric analysis
A negligible mass loss upto 150 0C in the TGA curve of the complex shows the absence of
water molecules. This is supported by Elemental analysis and crystal structure data. A 21.3%
weight loss was observed between 304-401 °C. This corresponds to the ligand fragment
benzimidazolyl amine (C9H11N3). Further the weight loss from 403-655°C is 57%, which
nearly corresponds to a weight loss of remaining ligand fragment and two NO2 moieties. The
remaining mass of 19.4% is accounted for the residual two NiO moieties (Fig. S1).
100
401C, 21.3%
Weight %
80
60
40
655C, 78.3%
20
100
200
300
400
500
600
Temperature (C)
Fig. S1. TGA curve of dinickel complex [Ni2(L)2(NO3)2]
700
Fig.S2.1H-NMR Spectra of p-methoxybenzamide (DMSO-d6, 400 MHz)
Fig. S3.1H-NMR spectra of p-methyl benzamide (DMSO-d6, 400 MHz)
Fig. S4.1H-NMR spectra of o-chlorobenzamide (DMSO-d6, 400 MHz)
Fig. S5.1H-NMR Spectra of 3,4-dichloro benzamide (DMSO-d6, 400 MHz)
Fig. S6.1H-NMR Spectra of iso-nicotinamide (DMSO-d6, 400 MHz)