To bring the observed contrasting features of transmission spectra in CSS and OSS state on more solid ground, we calculated the transmission spectra for another genre of molecular wires, i.e., cumulenes, shown in Figure . To simulate the experimental data, both the ends of cumulene molecules are substituted with phenyl groups, which enhance their stability. The phenyl-substituted cumulenes are then placed between two Au 9 clusters using thiol linker atoms (Figure ). Interestingly, corroborated with previous theoretical and experimental measurements, cumulene wires provide us an example with desired anti-ohmic behavior.