@article{7006, author = {J. Oomens and L. Myers and R. Dain and C. Leavitt and V. Pham and G. Gresham and G. Groenewold and M. Van Stipdonk}, title = {Infrared multiple-photon photodissociation of gas-phase group II metal-nitrate anions}, abstract = {Infrared spectra of gas-phase metal-nitrate anions M(NO3)(3)(-), where M = Mg2+, Ca2+, Sr2+ and Ba2+, were recorded by infrared multiple-photon dissociation (IRMPD) spectroscopy. Photodissociation of each of the precursors produces NO3- through the elimination of a neutral M(NO3)(2) unit. An absorption pattern characteristic of metal nitrates is observed in the IRMPD spectra, including the symmetric and antisymmetric NO3 stretches. The latter is split into high-and low-frequency components as a result of perturbation of the nitrate symmetry by complexation to the metal ion, and the magnitude of the splitting decreases following the trend Mg2+ > Ca2+ >Sr2+ congruent to Ba2+. The experimental spectra are in good general agreement with those obtained from density functional theory (DFT) calculations. (C) 2008 Elsevier B.V. All rights reserved.}, year = {2008}, journal = {International Journal of Mass Spectrometry}, volume = {273}, number = {1-2}, pages = {24-30}, month = {Jun}, isbn = {1387-3806}, url = {://000256005100005 }, note = {ISI Document Delivery No.: 302YDTimes Cited: 0Cited Reference Count: 35}, language = {English}, }