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. 2020 Apr 29;10:7215. doi: 10.1038/s41598-020-64221-y

Table 2.

Comparison of hydrogen adsorption energy values (Energy values are in units of kcal/mol). The HOMO and LUMO values of optimized SiO2 cluster were calculated to be 162.7 and 62.4  kcal/mol, respectively.

Properties AuNi@SiO2 Cluster AuNi@SiO2 Cluster with adsorbed DMAB
α MO (Spin Up) β MO (Spin down) α MO (Spin Up) β MO (Spin Down)
HOMO −193.0 −193.0 −185.7 −185.7
LUMO −136.1 −146.7 −149.0 −139.9
Chemical Hardness 28.4 23.2 18.3 22.9
Chemical Potential −164.6 −169.9 −167.4 −162.8
Electronegativity 164.6 169.9 167.4 162.8
Electrophilicity 476.1 623.2 763.8 578.1
HLG 56.9 46.3 36.7 45.9
∆E −56.0
∆H −56.6
∆G −42.3