Department of Chemistry, Kirklareli University, Kirklareli, Turkey Department of Chemistry, Tekirdag Namik Kemal University, Tekirdag, Turkey E-mail: meryemcamur@klu.edu.tr Manuscript received online 20 October 2020, revised and accepted 31 October 2020 The original Cu(II) and Co(II) metallo phthalocyanine complexes substituted with 7-oxy-4-(pyridin-3-yl)coumarin moieties both in peripheral and non-peripheral positions were synthesized and their structure characterized. Their electronic

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... on spectra and aggregation properties were investigated in DMF and DMSO. The Cu metallo peripheral substituted phthalocyanine complex was exhibited an aggregation band in both DMF and DMSO. On the other phthalocyanine complexes no aggregation band was observed. Optimized geometry of the molecules was drawn using Gauss-View 5 program, and their state at lowest energy was determined using Gaussian 09 program. However, energy-minimized structure, electronic distribution and molecular orbitals were obtained by DFT/B3LYP/6-31G (d,p) calculations which were supported by experimental results.