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We report here single UV photon pulsed field ionization-zero electron kinetic energy (PFI-ZEKE) photoelectron spectra of jet-cooled Sc-[C$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$H(CH$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$)] (n = 2, 3, and 6) complexes and two-photon IR-UV photoionization spectra of Sc-[C$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$(CH$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$)$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$]. Adiabatic ionization energies and low-frequency metal-ligand and ligand-based vibrational modes are measured from the single-photon PFI-ZEKE spectra, and C-H stretching frequencies are determined from the two-photon IR-UV spectra. The ionization energies of these Sc complexes decrease with increasing methyl substations of hydrogen in the benzene ring. The C-H frequencies of hexamethylbenzene are significantly shifted due to Sc coordination. The ZEKE transitions of the di- and tri-methyl substituted complexes are sharp, while those of the hexa-methyl species are rather broad. The observed electronic transitions are $1A\leftarrow 2A$ for Sc-[1,4-C$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$H$\mathrm{<mrow\; data-mjx-texclass="ORD">4</mrow>}$(CH$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$)$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$] (C$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$), $1A\prime \leftarrow 2A\prime$ for Sc-[1,3,5-C$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$H$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$(CH$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$)$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$] (C), and $1A1\leftarrow 2A1$ for Sc-[C$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$(CH$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$)$\mathrm{<mrow\; data-mjx-texclass="ORD">6</mrow>}$] (C).