Structural Properties of Gas-Phase Solvated Electrons and Anions-Toward the Microscopic Understanding of Stabilization Mechanism-

present research project was to attain a microscopic understanding of Thestabilization mechanism at play in solvated electrons and anions through the系统研究the electronic properties of gas-phase cluster anions in heterogeneous solvation environments.1.Reconstruction of the hydrogen-bonding network in (h_2o)_n^-：We demonstrated that the incorporation of a single d_2o or ch_3 OH into (h_2o)_<6,7>^-proceededefficiently without losing any h_2o constituent，exploiting the "Ar-mediated" process such as(h 2 o) n ^ - ar译文:m + m→[m·(2 h o) n ^ - ar译文:m] ^†→[(h 2 o) _ nm] ^ - +早. the photoelectron spectroscopicmeasurements revealed that isomeric interconversion occurred in [(h_2o) _nm]^-through an extensivereconstruction of the hydrogen-bonding network during the incorporation processes.2. Formation andphotodestruction of dual dipole-bound anion：A new type of dipole-bound anion composed of water and A polar molecule with μ>2.8 D was generatedby the incorporation reaction…argon-solvated water hexamer anions of argon-solvated water hexamer anions（h_2）_6 - ar_m . The newly-found anion can be regarded as a dual dipole-bound species described as(h 2 o) _ 6 e ^ -{}米,where the diffuse excess electron interacts with both (h_2o)_6 and M via the individualelectron-dipole interaction. The dual dipole-bound anion also serves as a precursor to The hydratedvalence anion of M.3. Structures of [(co_2)_n(ROH)_m]^-(R=H, ch_3) cluster anions：The solvation structures of [(co_2)_n(ROH)_m] -were investigated by infrared photodissociationspectroscopy combined with ab initio calculations. A significant entrainer effect observed suchthe incorporated protic molecule stabilizes co_2 effectively through the single ionic4. Valence anions stabilized by surrounding multi-dipoles：The electronic properties of The negatively-charged clusters of acetone and water molecules[(me 2 co)_ n (h译文:2 o)_米]^-,were studied by photoelectron imaging spectroscopy. The measurement indicates possibility that a newtype of stabilization mechanism is operative in [(me_2co)_n(h_2o)_m]^-：i . e .,the valence anion of me_2 CO is stabilized by an electrostatic field generated by the surroundingmulti - dipoles . less

The aim of the present research project was to attain a microscopic understanding of the stabilization mechanism at play in solvated electrons and anions through the systematic study about the electronic properties of gas-phase cluster anions in heterogeneous solvation environments.1. Reconstruction of the hydrogen-bonding network in (H_2O)_n^-: We demonstrated that the incorporation of a single D_2O or CH_3OH into (H_2O)_<6,7>^-proceeded efficiently without losing any H_2O constituent, by exploiting the "Ar-mediated" process such as (H_2O)_n^-Ar_m+M→[M・(H_2O)_n^-Ar_m]^†→[(H_2O)_nM]^-+mAr. The photoelectron spectroscopic measurements revealed that isomeric interconversion occurred in [(H_2O)_nM]^-through an extensive reconstruction of the hydrogen-bonding network during the incorporation processes.2. Formation and photodestruction of dual dipole-bound anion: A new type of dipole-bound anion composed of water and a polar molecule with μ>2.8 D was generated by the incorporation reaction … More of argon-solvated water hexamer anions, (H_2O)_6^-Ar_m. The newly-found anion can be regarded as a dual dipole-bound species described as (H_2O)_6{e^-} M, where the diffuse excess electron interacts with both (H_2O)_6 and M via the individual electron-dipole interaction. The dual dipole-bound anion also serves as a precursor to the hydrated valence anion of M.3. Structures of [(CO_2)_n(ROH)_m]^-(R=H, CH_3) cluster anions: The solvation structures of [(CO_2)_n(ROH)_m]^-were investigated by infrared photodissociation spectroscopy combined with ab initio calculations. A significant entrainer effect was observed such that the incorporated protic molecule stabilizes CO_2 effectively through the single ionic hydrogen-bonding interaction.4. Valence anions stabilized by surrounding multi-dipoles: The electronic properties of the negatively-charged clusters of acetone and water molecules, [(Me_2CO)_n(H_2O)_m]^-, were studied by photoelectron imaging spectroscopy. The measurement indicates possibility that a new type of stabilization mechanism is operative in [(Me_2CO)_n(H_2O)_m]^-: i. e., the valence anion of Me_2CO is stabilized by an electrostatic field generated by the surrounding multi-dipoles. Less