Abstract
The reaction of Co(OAc)2·4H2O with multisite coordinated salamo-based ligand H2L containing six coordinating sites in presence of co-ligand NCS- anions afforded successfully a trinuclear Co(II) complex [Co3(L)2(NCS)2]. The trinuclear Co(II) complex has been characterized by elemental analyses, UV-visible, Fourier transform infrared spectroscopic methods and DFT calculation. In addition, the structure of the Co(II) complex has been confirmed by single crystal X-ray crystallography. X-ray crystal structure analysis of the Co(II) complex revealed that the Co(II) complex consists of three Co(II) atoms coordinated by two fully deprotonated ligand (L)2- units and co-ligand NCS- anions. The close surveillance of the crystal structure of the Co(II) complex discloses some notable non-covalent interactions like H-bonding, C-H···π and π···π. The luminescent property of the Co(II) complex has been studied in methanol solution. Apart from, as a complementary revelation, intermolecular interactions with respect to percentages of hydrogen bondings in the X-ray crystal structure of the trinuclear Co(II) complex was quantified by analyses of Hirshfeld surfaces and fingerprint plots.
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