We report experimental studies of the formation of CF3O− by ion-molecule and electron attachment reactions, and theoretical investigations of the structure and energetics of CF3O− and its neutral counterpart CF3O. The anion CF3O− is formed from the rapid attachment of free electrons to its neutral dimer, (CF3O)2. Potential sources of CF3O− through ion-molecule reactions of CF3− and F− were surveyed. CF3O− is formed in the bimolecular ion-molecule reaction of CF3− with SO2 and the third-order association reaction of F− with CF2O. In addition, rate constants for the reactions of CF3− with a variety of neutral compounds were measured. A number of cases were found in which formation of CF3O− was energetically allowed but was not observed. The potential energy surfaces of CF3O and CF3O− have been investigated using a variety of density functional theory (DFT) techniques. The ground-state minimum energy structure of CF3O was found to be a A′2 Jahn–Teller distorted Cs-symmetry structure, while for the anion the ground state is A11 with a C3v-symmetry minimum. A search for other low-energy minima for CF3O− was unsuccessful. The DFT methods support a value for the adiabatic electron affinity of CF3O near 4.1 eV.
Dinitrogen complexes of osmium(II) with thiolate co-ligands: X-ray structure of mer-[OsCl(SC6F5)(N2)(PMe2Ph)3]
作者:Diana Cruz-Garritz、Silvia Gelover、Hugo Torrens、Javier Leal、Raymond L. Richards
DOI:10.1039/dt9880002393
日期:——
Treatment of mer-[OsCl2(N2)(PMe2Ph)3] with S2CNMe2– salts causes loss of N2 and the formation of mer/fac-[OsCl(S2CNMe2)(PMe2Ph)3] and cis-[Os(S2CNMe2)2(PMe2Ph)2]. Dinitrogen is, however, retained in reactions of mer-[OsX2(N2)(PMe2Ph)3](X = Cl or Br) with RS–(R = Ph, C6F5, Me, or CF3) at 20 °C in acetone to give the series mer-[OsX(SR)(N2)(PMe2Ph)3]. Under more vigorous conditions the N2 is displaced
作者:Robert A. Morris、Thomas M. Miller、John F. Paulson、A. A. Viggiano、Michael T. Feldmann、Rollin A. King、Henry F. Schaefer
DOI:10.1063/1.478753
日期:1999.5
We report experimental studies of the formation of CF3O− by ion-molecule and electron attachment reactions, and theoretical investigations of the structure and energetics of CF3O− and its neutral counterpart CF3O. The anion CF3O− is formed from the rapid attachment of free electrons to its neutral dimer, (CF3O)2. Potential sources of CF3O− through ion-molecule reactions of CF3− and F− were surveyed. CF3O− is formed in the bimolecular ion-molecule reaction of CF3− with SO2 and the third-order association reaction of F− with CF2O. In addition, rate constants for the reactions of CF3− with a variety of neutral compounds were measured. A number of cases were found in which formation of CF3O− was energetically allowed but was not observed. The potential energy surfaces of CF3O and CF3O− have been investigated using a variety of density functional theory (DFT) techniques. The ground-state minimum energy structure of CF3O was found to be a A′2 Jahn–Teller distorted Cs-symmetry structure, while for the anion the ground state is A11 with a C3v-symmetry minimum. A search for other low-energy minima for CF3O− was unsuccessful. The DFT methods support a value for the adiabatic electron affinity of CF3O near 4.1 eV.