Table 3 Degradation rate (\(\beta\)), half-lives (\({t}_{1/2}\)) and destruction cross section (\(\upsigma\)) for pure mellitic acid, along with vibrational mode assignment indicating in bold the main vibration.
Band [\({\text{cm}}^{-1}\)] | Mellitic acid vibrational mode | \(\beta \,[{\text{s}}^{-1}]\) | \({t}_{1/2}\, \left[{\text{sol}}\right]\) Patel et al.5 | \({t}_{1/2}\, \left[{\text{sol}}\right]\) Jezero crater flux | \(\sigma \,[{\text{cm}}^{2}]\) |
|---|---|---|---|---|---|
1564 | Combination COO-H out-of-plane bending + ring C–C in-plane bending | \(\left(4\pm 1\right)\times {10}^{-3}\) | \(0.8\pm 0.2\) | \(1.0\pm 0.3\) | \(\left(1.5\pm 0.4\right)\times {10}^{-20}\) |
1366 | Fundamental COOH in-plane bending and ring breathing | \(\left(2.4\pm 1.8\right)\times {10}^{-4}\) | \(13\pm 9\) | \(17\pm 12\) | \(\left(9\pm 6\right)\times {10}^{-22}\) |
1153 | Fundamental COO-H in-plane bending and C–O stretching | \(\left(5\pm 1\right)\times {10}^{-4}\) | \(6\pm 1\) | \(8\pm 2\) | \(\left(1.9\pm 0.4\right)\times {10}^{-21}\) |
