Abstract
The magnetic properties of O2 adsorbed in nanochannels of porous metal-organic solids CPL-1 and CPL-p1 have been investigated by means of high-field magnetization process measurement. The contribution from adsorbed O2 shows the metamagnetic-like behavior in both compounds. We propose “the field-induced rearrangement mechanism” as the explanation for the metamagnetic-like behavior. It is known for the O2-O2 dimer that the magnetic interaction depends strongly on the intermolecular distance and the orientation of molecular axes. It is considered naturally that the stable arrangement with saturated magnetic moment in the sufficient high field is different from the H-structure which is stable at zero field.
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