Quantitative Tin Loading Determination of Supported Catalysts by <sup>119</sup>Sn HRMAS NMR using a Calibrated Internal Signal (ERETIC)

As an alternative to tedious elemental analysis, tin loading of a grafted organotin catalyst is quantified using an electronic reference (ERETIC) in <sup>119</sup>Sn HRMAS NMR. The results are in excellent agreement with elemental analysis data and display a significantly higher precision.