Abstract
The authors report use of and NMR to study the bonding of CO on Pd particles. By C double resonance, they measure the CO bond length to be 1.20±0.03 Å. The resonance frequency is exceptionally high, 310 ppm above values typical for metal carbonyls. Evidence that the shift arises from electron-spin polarization is given from studies of the magnitude and the dependence on temperature and frequency of the spin-lattice relaxation time. A diffusion enegy of 6±2 kcal/mole, half that of CO on Pt, is deduced from motional narrowing of the NMR line.
- Received 2 September 1986
DOI:https://doi.org/10.1103/PhysRevLett.58.953
©1987 American Physical Society