Rajegowda, H. R. and Kumar, P. R. and Hosamani, A. and Butcher, Ray J. and Naveen, S. and Lokanath, N. K. (2018) Synthesis, characterization and single crystal structures of chiral Schiff base and its tetranuclear palladium complex with PdsbndOsbndPd bridging and PdsbndPd bonds. Journal of Molecular Structure, 1156. pp. 301-307.
Full text not available from this repository. (Request a copy)Abstract
A new chiral Schiff base ligand 2-{N-[(2S)-(1-hydroxy-3-phenylpropan-2-yl]ethanimidoyl} phenol ((S)single bond H2L) was obtained by acid catalyzed condensation of (2S)-(−)-2-amino-3-phenyl-1-propanol with 2′-hydroxyacetophenone. The palladium complex was prepared by treating a solution of (S)single bondH2L in acetone with a solution of Na2PdCl4 in water in 1:1 M ratio. The new ligand and its complex were characterized by FT-IR, 1H, 13C{1H} NMR spectroscopy, polarimetry and elemental analysis and their molecular structures were determined by single crystal X-ray diffraction. Both the compounds crystallizes in monoclinic system in the space group P21. There exists an intra [Osingle bondHN (1.62(5) Å)] and intermolecular [Osingle bondHO (1.53(5) Å) and Csingle bondHO (2.59 Å)] hydrogen bonding and secondary interactions in the crystal of (S)single bondH2L. The structure of the palladium complex was found very interesting wherein the ligand coordinated to metal center as tridentate dianionic (O−, N, O−) fashion, (S)-L, resulting in a tetranuclear palladium cluster, [Pd4((S)-L)4]. In these supramolecular structures phenolate oxygen coordinated to Pd(II) ion as Pdsingle bondO terminal bonds [1.934(12) - 1.977(11) Å] and the alkoxide oxygen coordinated as Pdsingle bondOsingle bondPd bridging bonds [1.993(11) - 2.012(12) Å]. The Pdsingle bondN bond lengths found were in the range of 1.949(13) to 1.919(12) Å. There exists two asymmetric tetranuclear complex molecules in its crystal lattice. There exists very strong metal-metal bond interaction, Pd(2)single bondPd(3) [3.0410(18) Å] and Pd(6)single bondPd(7) [3.0517(19) Å] respectively in the two asymmetric units.
| Item Type: | Article |
|---|---|
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Manjula P Library Assistant |
| Date Deposited: | 15 Jan 2021 07:56 |
| Last Modified: | 11 Jul 2022 09:17 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/15423 |
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