Synthesis, Characterisation and Magnetic Behaviour of Ionic Metalloporphyrins: Metal–Tetrakis(N-Octyl-4-Pyridinium)–Porphyrins with Tetrabromoferrate(III) Anions

Abstract

A series of magnetic, ionic-substituted tetrapyridyl metalloporphyrins, [tetrakis(N-octyl-4-pyridinium)-metal-porphyrin][tetrabromoferrate(III)] 4 (metal=iron, cobalt, manganese, copper or zinc), have been synthesised. All compounds show weak ferromagnetic behaviour at room temperature and respond to an external neodymium magnet.

Synthesis of a New Co Metal–Organic Framework Assembled from 5,10,15,20-Tetrakis((pyridin-4-yl) phenyl)porphyrin “Co-MTPhPyP” and Its Application to the Removal of Heavy Metal Ions

“…The two medium bands at 1539 cm −1 were assigned to the pyridine skeletal stretching and two medium bands at 1539 cm −1 and 1473 cm −1 correspond to C=C and C=N stretching bands, respectively. The strong band at 966 cm −1 corresponds to deformation of the porphyrin ring and the strong band at 798 cm −1 was attributed to pyrrole ring deformation [ 19 , 20 ]. The UV-vis spectra data for the TPhPyP were obtained in CHCl 3 and showed a typical electronic spectrum of meso- substituted porphyrin with a sharp short band at 422 nm and four Q-bands at 519, 554, 594, and 647 nm ( Figure 2 b).…”