Syntheses and Structures of Facial and Meridional Stereoisomers of kappa(2)-N,S-Chelated Ruthenium Borate Complexes
Résumé
The trans-mer-[(kappa(2)-N,S-NS2C7H4)PR3Ru{kappa(3)-H,S,S '-H2B (NS2C7H4)(2)}], (trans-mer-1 a: R=Cy; trans-mer-1 b: R=Ph) complexes are kinetically controlled products that upon thermolysis led to the formation of cis-mer-[(kappa(2)-N,S-NS2C7H4)PR3Ru{kappa(3)-H,S,S '-H2B(NS2C7H4)(2)}], (cis-mer-2 a: R=Cy; cis-mer-2 b: R=Ph) and cis-fac-[(kappa(2)-N,S-NS2C7H4)PR3Ru{kappa(3)-H,S,S '-H2B(NS2C7H4)(2)}], (cis-fac-3 a: R=Cy; cis-fac-3 b: R=Ph) along with complex cis-[(kappa(2)-N,S-NS2C7H4)(2)Ru(PPh3)(2)], (cis-4). One of the main intentions of this study was to examine the flexibility of the borate and hemilabile N,S-chelating mercapto-benzothiazole ligands in adapting different spatial arrangements around metal center. Multinuclear spectroscopic analyses have been done to characterize all new complexes and the structures were further confirmed by single-crystal X-ray diffraction analysis. Further, Density Functional Theory (DFT) calculations were performed to provide an insight into the bonding of the complexes.
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Ahmad et al. - 2023 - Synthesis and Structures of Facial and Meridional .pdf (1.33 Mo)
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