Magnetic susceptibility measurements

Magnetic susceptibility data of compound 1 was recorded using a Quantum Design MPMS-5XL SQUID magnetometer for direct current (dc) and alternating current (ac) measurements. The polycrystalline samples were compacted and immobilized into cylindrical PTFE capsules. The dc susceptibility data were acquired as a function of the field (0.1–5.0 T) and temperature (2.0–290 K). The ac susceptibility data were measured in the absence of a static bias field in the 10–1000 Hz frequency range (T = 2.0–50 K, Bac = 3 G), but no out-of-phase signals were detected. Data were corrected for diamagnetic contributions from the sample holder and the compounds (χdia(1) = ___ cm3 mol−1).