Depending on the sample and experimental conditions, both intramolecular and intermolecular coherent spins can be probed by MQ-SC. In simulations of MQ-SC experiments (Figure ), up to 6 coherence orders can be seen in a linear chain of 31 P spins separated at a distance of 2.5 Å in between. We optimized the excitation time at a MAS frequency of 10 kHz (Figure ) with the DQ filtered even order MQ-SC pulse sequence in order to maximize the extracted MQCOs, and found an excitation time of 8 ms (mixing time of 16 ms) to be optimal across all different 31 P nuclei containing powdered samples and their respective vitrified counterparts (Figure and). However, the mSBF sample (which suf-10 8 pulse sequence (Figure ) and a relaxation delay of 5 s. The x-axis of the spin counting profiles is represented as experimental index (j), where phase is incremented at each index by 360 • /(j). All spin counting profiles' integrals were normalized to the integral of the first experiment (j = 0). The SC profiles represent the summation of all excited MQCO transition frequencies, which are extracted and discretized via Fourier transform into MQCO profiles.