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Synthesis, characterisation and crystal structure of cis-dioxomolybdenum(VI) complexes of some potentially pentadentate but functionally tridentate (ONS) donor ligands by Arindam Rana; Rupam Dinda; Parbati Sengupta; Saktiprosad Ghosh; Larry R. Falvello is a Chemistry article available to read on EtoBox.
What is Synthesis, characterisation and crystal structure of cis-dioxomolybdenum(VI) complexes of some potentially pentadentate but functionally tridentate (ONS) donor ligands about?
Neutral cis -dioxomolybdenum(VI) complexes with potentially pentadentate ONSNO donor Schiff bases of thiocarbodihydrazone of salicylaldehyde (H 3 L 1 ), 5-bromo (H 3 L 2 ), 5-nitro salicylaldehyde (H 3 L 3 ) and 2-hydroxyacetophenone (H 3 L 4 ) acting as tridentate ONS donor ligands have been synthesised. The complexes are found to be of the form MoO 2 LH(R Ã/OH) (R0/CH 3 ) where, LH0/ L I H, L 2 H, L 3 H and L 4 H. The complexes were characterised by elemental analyses, UV, IR, and 1 H NMR spectroscopy, magnetic susceptibility measurement, molar conductivities in solution and by cyclic voltammetry. Two of the complexes [MoO 2 (L 2 H)(MeOH)] and [MoO 2 (L 4 H)(MeOH)] were crystallographically characterised. The structures reveal that the molybdenum acceptor centre is present in a distorted octahedral NO 4 S donor environment. The presence of a substituent either on the aromatic ring of the salicylaldehyde moiety or on the carbon atom of its carbonyl group is found to exhibit little effect on the corresponding metal ligand bond distances and angles. The sixth coordination site of the complexes harboring the weakly coordinated R Ã/OH moiety is found to act as the binding site for var
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- Author
- Arindam Rana; Rupam Dinda; Parbati Sengupta; Saktiprosad Ghosh; Larry R. Falvello
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0277-5387)
- Published
- 2002
- Language
- EN
- Field
- Chemistry (Physical Sciences)