Summary of the atomic composition and stoichiometric assignments obtained from the fitting of the XPS spectra reported in ESI Fig. 1S and 5.
Precursor | Element | Atomic% | Peak binding energy (eV) | Assignments | Assignment% |
---|---|---|---|---|---|
NbCl5 | C | 85.3 | 284.8 | C–C | 78.6 |
286.3 | C–O | 4.7 | |||
288.8 | O–C O | 1.9 | |||
O | 10.2 | 530.2 | M–O | 5.4 | |
531.7 | C O | 4.1 | |||
533.3 | C–O | 2.4 | |||
Nb | 2.9 | 203.0 | Nb4+3d5/2 | 0.1 | |
206.9 | Nb5+3d5/2 | 1.5 | |||
209.3 | Nb5+3d3/2 | 0.4 | |||
Se | 1.5 | 53.4 | Se3d5/2 | 0.7 | |
55.5 | Se3d3/2 | 0.6 | |||
NbF5 | C | 77.9 | 284.9 | C–C | 59.5 |
286.2 | C–O | 6.0 | |||
288.7 | O–C O | 4.1 | |||
O | 13.3 | 530.1 | M–O | 2.8 | |
531.8 | C O | 5.5 | |||
533.6 | C–O | 4.4 | |||
Nb | 2.5 | 203.6 | Nb4+3d5/2 | 1.6 | |
206.3 | Nb4+3d5/2 | 1.6 | |||
207.3 | Nb5+3d3/2 | 1.3 | |||
210.1 | Nb5+3d5/2 | 1.6 | |||
Se | 6.3 | 54.2 | Se3d5/2 | 8.3 | |
55.4 | Se3d3/2 | 3.7 |