4 documents found, page 1 of 1
Synthesis, structural characterization and leishmanicidal activity evaluation o...
Quintal, Susana; Morais, Tânia S.; Matos, Cristina P.; Robalo, Maria Paula; Piedade, M. Fátima M.; Brito, Maria J. Villa de; Garcia, M. HelenaNew ferrocenyl derivatives with the general formula FcC(O)L [Fc = (eta(5)-C5H5)Fe(eta(5)-C5H4)], where L is an aminoquinoline or hydroxyaminoquinoline, have been synthesized for evaluation of their leishmanicidal properties. The compounds were designed with ferrocene coupled to the quinolines by an amide or ester bridge. Ferrocenyl component is intended to act as quinoline carrier and ROS producer after in vivo...
Synthesis of new donor/acceptor 5-cyclopentadienyl and 5-indenyliron(II) comple...
Garcia, M. Helena; Robalo, M. Paula; Teixeira, António P. S.; Dias, A. R.; Piedade, M. Fátima M.; Duarte, M. TeresaNew complexes of the type [Fe( 5-Cp or Ind)(L)(L )(p-NCR)][BF4] (L, L =CO, P(OC6H5)3, P(C6H5)3; R=C6H4N(CH3)2, C6H4NO2, (E)-C(H) C(H)C6H4NO2, (E)-C(H) C(H)C6H4N(CH3)2) have been synthesised and characterised. Spectroscopic data were analysed in order to evaluate the tuning of the electronic density at the metal centre and the extension of the -delocalisation on the molecule, due to the presence of coligands wit...
A supramolecular zigzag chain of organometallic dipoles mediated by PF6 2- anions
Duarte, M. Teresa; Piedade, M. Fátima M.; Robalo, M. Paula; Teixeira, António P. S.; Garcia, M. HelenaComplex {Fe( 5-cyclopentadienyl)(PMe3)[P(OPh)3](4–NCC6H4NO2)} [PF6] has been characterized by spectroscopic and X-ray diffraction in order to evaluate the tuning of the electron density at the metal center and the extension ofthe delocalization on the molecule due to the presence of phosphite and phosphine co-ligands. The compound crystallizes in the centrosymmetric space group P21/c which destroys the possibil...
N,N'-Ethylenebis(pyridoxylideneiminato) and N,N'-Ethylenebis(pyridoxylaminato):...
Correia, Isabel; Pessoa, João Costa; Duarte, M. Teresa; Henriques, Rui T.; Piedade, M. Fátima M.; Veiros, Luís F.; Jakusch, Tamás; Kiss, TamásThe Schiff base N,Nprime-ethylenebis(pyridoxylideneiminato) (H2pyr2en, 1) was synthesized by reaction of pyridoxal with ethylenediamine; reduction of H2pyr2en with NaBH4 yielded the reduced Schiff base N,Nprime-ethylenebis(pyridoxylaminato) (H2Rpyr2en, 2); their crystal structures were determined by X-ray diffraction. The totally protonated forms of 1 and 2 correspond to H6L4+, and all protonation constants wer...