We present infrared spectra and density functional theory calculations of mass selected [Sn(CO2)n]-\ cluster anions (n\ = 2\textendash6). The spectra and structures of these clusters exhibit less structural diversity than those of analogous clusters with first-row transition metals, but are more complex than those for the heavy coinage metals or for the related [Bi(CO2)n]-\ clusters. The most favorable core ion structure for all cluster sizes can be characterized as a Sn-oxalate complex, Sn[C2O4]-. Higher energy isomers based on a bidentate η2-(C,O) CO2\ ligand tightly bound to the metal atom in SnCO2\textendash\ complexes are also observed, even for the largest cluster sizes studied here. For\ n\ = 2, another high energy isomer is found, featuring a CO2\ ligand weakly bound to the metal atom in a SnCO2\textendash\ ion.
BT - The Journal of Physical Chemistry A DA - 2018-03 DO - 10.1021/acs.jpca.8b00362 N2 -We present infrared spectra and density functional theory calculations of mass selected [Sn(CO2)n]-\ cluster anions (n\ = 2\textendash6). The spectra and structures of these clusters exhibit less structural diversity than those of analogous clusters with first-row transition metals, but are more complex than those for the heavy coinage metals or for the related [Bi(CO2)n]-\ clusters. The most favorable core ion structure for all cluster sizes can be characterized as a Sn-oxalate complex, Sn[C2O4]-. Higher energy isomers based on a bidentate η2-(C,O) CO2\ ligand tightly bound to the metal atom in SnCO2\textendash\ complexes are also observed, even for the largest cluster sizes studied here. For\ n\ = 2, another high energy isomer is found, featuring a CO2\ ligand weakly bound to the metal atom in a SnCO2\textendash\ ion.
PY - 2018 SP - 3772 EP - 3779 T2 - The Journal of Physical Chemistry A TI - Infrared Photodissociation Spectra of [Sn(CO2)n]- Cluster Ions UR - https://pubs.acs.org/doi/pdfplus/10.1021/acs.jpca.8b00362 VL - 122 SN - 1089-5639 ER -