A simple route to dinuclear complexes containing unusual mu-N-sulfonamido bridges

作者：Sanmartin Matalobos Jesus^*; Portela Garcia Cristina; Fondo Matilde; Garcia Deibe Ana M; Llamas Saiz Antonio L

来源：Journal of Coordination Chemistry, 2016, 69(8): 1358-1370.

DOI：10.1080/00958972.2016.1161183

• Dinuclear complexes
• sulfonamido bridges
• Schiff bases
• enolimines
• ketoenamines

We report here the straightforward synthesis of some dimeric transition metal complexes of three Schiff base ligands, which were obtained by condensation of 2-tosylaminomethylaniline with 2,3-dihydroxybenzaldehyde (H2L1), 2,4-dihydroxybenzaldehyde (H2L2), and 4-formyl-3-hydroxybenzoic acid (H2L3), respectively. Both ligands and complexes were characterized by a combination of H-1 NMR, infrared and mass spectrometries, and elemental analyses. Furthermore, the crystal structures of H2L2 and Pd(2)L(2)(2)2MeOH were elucidated by X-ray diffraction. The crystal structure of Pd(2)L(2)(2)2MeOH has instead of typical mu-O-phenoxo bridges, repeating units held together by unusual mu-N-sulfonamido bridges. This complex is chiral, although it crystallizes as a racemate, with C-2v symmetry, where the two bridging nitrogens are asymmetric centers with identical handedness.
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• 出版日期2016