@article{7011,
  author = {A. M. Ricks and J. M. Bakker and G. E. Douberly and M. A. Duncan},
  title = {Infrared Spectroscopy and Structures of Cobalt Carbonyl Cations, Co(CO)(n)(+) (n=1-9)},
  abstract = {Cobalt carbonyl cations of the form Co(CO)(n)(+) (n = 1-9) are produced in a molecular beam by laser vaporization in a pulsed nozzle source. These ions, and their corresponding "argon-tagged" analogues, Co(CO)(n)(Ar)(m)(+), are studied with mass-selected infrared photodissociation spectroscopy in the carbonyl stretching region. The number of infrared-active bands, their frequency positions, and their relative intensities provide distinctive patterns allowing determination of the geometries and electronic structures of these complexes. CO(CO)(5)(+) has a completed coordination sphere, consistent with its expected 18-electron stability, and it has the same structure (D-3h trigonal bipyramid) as its neutral isoelectronic analog Fe(CO)(5). The carbonyl stretches in CO(CO)(5)(+) are less red-shifted than those in Fe(CO)(5) because of charge-induced reduction in the pi back-bonding. Co(CO)(1-4)(+) complexes have triplet ground states, but the spin changes to a singlet for the Co(CO)(5)(+) complex.},
  year = {2009},
  journal = {Journal of Physical Chemistry A},
  volume = {113},
  number = {16},
  pages = {4701-4708},
  month = {Apr},
  isbn = {1089-5639},
  url = {<Go to ISI>://000265383200120 },
  note = {ISI Document Delivery No.: 435ZUTimes Cited: 0Cited Reference Count: 76},
  language = {English},
}