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X-ray Transient Absorption Spectroscopy (XTAS) and theoretical calculationsare used to study CCl$_4^+$ prepared by 800 nm strong-field ionization. XTASsimultaneously probes atoms at the carbon K-edge (280-300 eV) and chlorineL-edge (195-220 eV). Comparison of experiment to X-ray spectra computed byorbital-optimized density functional theory (OO-DFT) indicates that afterionization, CCl$_4^+$ undergoes symmetry breaking driven by Jahn-Tellerdistortion away from the initial tetrahedral structure (T$_d$) in 6$\pm$2 fs.The resultant symmetry-broken covalently bonded form subsequently separates toa noncovalently bound complex between CCl$_3^+$ and Cl over 90$\pm$10 fs, whichis again predicted by theory. Finally, after more than 800 fs, L-edge signalsfor atomic Cl are observed, indicating dissociation to free CCl$_3^+$ and Cl.The results for Jahn-Teller distortion to the symmetry-broken form of CCl$_4^+$and formation of the Cl -- CCl$_3^+$ complex characterize previously unobservednew species along the route to dissociation.

Jahn-Teller Distortion and Dissociation of CCl$_4^+$ by Transient X-ray Spectroscopy Simultaneously at the Carbon K- and Chlorine L-Edge