Eight Butoxy Replace The Crystal Structure And Properties Of Phthalocyanine Complexes

The crystal structures of 1,4,8,11,15,18,22,25-octa-butyloxyphthalocyanines (metal-free phthalocyanine and its copper (II) , nickel (II) complexes ) were investigated by the X-ray diffraction method. The central cores of the molecules deviate markedly from planarity forming saddle shape in all these three compounds. The molecules are separated each other with different distances and cover each other with different area, alternate within closest molecular pair and between molecular pairs. The packing patterns of molecules in these compounds are also different. The blue shift of absorption bands in solid-state reflectance spectra from that in UV-Vis spectra in solution and melting points of these compounds are related to molecular arrangement in solid. The 'HNMR results show that the peak intensity and shape is affected by the kind of central metal. The TG measurements demonstrated complicated decomposition situations. DSC analysis indicated that there are some crystal transitions including the occurrence of liquid crystal state.