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Synthesis, characterisation and reactivity of trans-[Ru(L)(PPh3)Br2]; L=2-pyridyl-N-(2′-methylthiophenyl)methyleneimine: Crystal structure of trans-[Ru(L)(PPh3)Br2] |
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| Authors: | Milan Maji Mossaraf Hossain Madhumita Chatterjee Shyamal Kumar Chattopadhyay Vedavati G Puranik Pinak Chakrabarti Saktiprosad Ghosh |
| Institution: | a Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700-032, India b Department of Chemistry, Bengal Engineering College, Deemed University, Howrah 711-103, India c Physical Chemistry Division, National Chemical Laboratory, Pune 411-008, India d Department of Biochemistry, Bose Institute, Calcutta 700-054, India |
| Abstract: | Reaction of Ru(PPh3)2Br2 with the NNS chelating tridentate ligand 2-pyridyl-N-(2′-methylthiophenyl)methyleneimine (L) led to the isolation of the ruthenium(II) complex Ru(L)(PPh3)Br2]. Reactivity of this complex with different bidentate chelating ligands revealed that the products are quite different from those obtained by reacting Ru(L)(PPh3)Cl2 (the corresponding cis dichloro complex) with the same ligands under comparable conditions. The mixed chelates were isolated and characterised by elemental analysis, magnetic moment measurement and by different spectroscopic methods along with their precursor. Electrochemistry of the complexes was examined by cyclic voltammetry using a platinum working electrode and a Ag/AgCl electrode as reference. The crystal structure of Ru(L)(PPh3)Br2] disclosed that, unlike Ru(L)(PPh3)Cl2, the two bromo ligands are in trans position and this explained the difference in its reactivity pattern from the corresponding chloro complex. |
| Keywords: | Ruthenium(II) complexes Trans dibromo complex NNS ligand Chemical and electrochemical studies X-ray crystal structure |
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