Table 2. Charge Transfer between the EC Molecule and the Surface (Δq_EC); Average Value for the Charge Accumulation/Depletion within the Interacting EC Atom (Δq_Oc/Oe), i.e., Carbonyl or the Ethereal Oxygen Atom as a Function of the Surface Coverage (θ_EC)^a and Average Stretching Mode for the Carbonyl Group ν(C=O), as Well as the Asymmetric ν_asy(CH₂) and Symmetric Stretching Mode ν_sys(CH₂) and the Bending Mode for the Methylene Group δ(CH₂).

					CH2
adsorption orientation	θ	ΔqEC (e–)	ΔqOc/Oe (e–)	νC=O (cm–1)	νsys (cm–1)	νasy (cm–1)	δ (cm–1)
isolated EC molecule				1829	2952	2990	1341
liquid film EC66,100				1803	2928	2955	1397
parallel	0.25	–0.094	–0.053	1654	3087	3022	1482
	0.50	–0.094	–0.049	1665	2991	3112	1474
	0.75	–0.021	0.743	1704	3015	3064	1455
	1.00	–0.010	0.766	1753	3054	3053	1468
perpendicular	0.25	–0.071	0.056	1619	3024	3059	1432
	0.50	–0.072	0.054	1851	3026	3086	1456
	0.75	–0.019	0.617	1819	3091	3040	1465
	1.00	–0.019	0.631	1823	3120	3054	1474

^aNegative charge transfer values indicate a charge accumulation on the adsorbate, while positive values indicate charge transfers to the surface.