Single crystal X-ray structure analyses of both CPs revealed that the isostructural CPs were crystalized in monoclinic space group Cc. There were two crystallographically non-equivalent No such changes in the intensity of emission peaks at 439 and 484 nm for the Zn(II) CP 33@pyr were detected, describing the synergic relationship among luminescence and SCO properties in 32@pyr. From the PL intensity ratio at 392 and 478 nm during heating and cooling at scan rate of 5 K min -1 , the thermal development of the normalized HS molar fraction (HS) norm achieved (Fig. ). The thermal SCO established depending on the luminescence characteristics of 32@pyr matched well with the SCO curve obtained from magnetic measurements.