Nuclear magnetic resonance information gathering

Spectroscopic data of CO2 metal complexes have been obtained and an attempt has been made to use them as an auxiliary technique for structure work-out in case XRD characterization of metal complexes was not available. Two spectroscopic techniques have mostly been used to this end, namely Infrared (IR, or FTIR, or DRIFT) and C-Nuclear Magnetic Resonance ( C-NMR), the former being most informative. Theoretical calculations have also been coupled with spectroscopic studies to get a better insight into the structural properties of the CO2 complexes. Good quality information can be gathered by carrying out a detailed analysis of multiple data, although individual pieces of information may be quite deceptive. 

Spectroscopic information is used for two basic objectives to gather compositional or structural evidence about new or known species present in solution and to monitor changes in their concentrations with time. While almost all spectroscopic techniques corresponding to the entire electromagnetic spectrum have been used for such studies, infrared (IR) and nuclear magnetic resonance (NMR) have proved to be particularly useful for the following reasons. 

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