Resumen

POTGIETER, Kim C.; GERBER, Thomas I.A.  y  MAYER, Peter. Coordination of tridentate Schiff base derivatives of 4-aminoantipyrine to rhenium (V). S.Afr.j.chem. (Online) [online]. 2011, vol.64, pp.179-184. ISSN 1996-840X.

The potentially tridentate Schiff base derivatives H₂nap and Hoap were synthesized by the condensation reaction of 4-amino-2,3-dimethyl-1-phenyl-5-pyrazoline (4-aminoantipyrine)with 2-aminobenzaldehyde and salicylaldehyde, respectively. The reaction of H₂nap with [ReOBr₃(PPh₃)₂] and cis-[ReO₂I(PPh₃)₂](1) gives rise to the products [Re(nap)Br₂(PPh₃)]Br (2) and [ReO(OEt)(Hnap)(PPh₃)]I (3), respectively. In 2 the ligand nap is coordinated as a tridentate imido-imino-ketone, while in 3 Hnap is bonded as an amido-imino-ketone. The reaction of Hoap with [ReO₂I(PPh₃)₂] affords the product [ReO(OMe)(oap)(PPh₃)]I (4). Spectroscopic data and the X-ray crystal structures of compounds 2-4 are reported.

Palabras clave : Tridentate; rhenium(V); imido; crystal structures.

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