Synthesis, EPR and DFF calculations of rare Ag(II)porphyrins and the crystal structure of [Zn(II)tetrakis(4-bromo-2-thiophene)porphyrin]

Summary, in English

Meso-tetrakis (4-bromo-2-thiophene) and (5-bromo-2-thiophene) porphyrins were synthesized in 18% yield from freshly distilled pyrrole and the corresponding aldehydes in refluxing propionic acid. Reaction of both porphyrins with either Zn(OAc)(2)center dot 2H(2)O Or Ag(OAc) afforded the corresponding metal complexes in 20% yield. The free bases and metal complexes were characterized by IR, NMR, EPR, MS and XPS. The crystal structure of 5,10,15.20(4-bromo-2-thiophene)porphyrinato Zn(II) was determined by X-ray diffraction and shows a 'zigzag-like' packing pattern due to S S intermolecular interaction. Structural features of these molecules are discussed by DFT quantum chemical calculations. (C) 2008 Elsevier B.V. All rights reserved.

• Author: Mohamed Ghazzali; Morsy A. M. Abu-Youssef; Krister Larsson; Orjan Hansson; Adel Amer; Toomas Tamm; Lars Ohrstrom
• Department/s: MAX IV Laboratory
• Publishing year: 2008
• Language: English
• Pages: 1019-1022
• Publication/Series: Inorganic Chemistry Communications
• Volume: 11
• Issue: 9
• Links: http://dx.doi.org/10.1016/j.inoche.2008.05.020
• Document type: Journal article
• Publisher: Elsevier
• Topic: Natural Sciences; Physical Sciences
• Keywords: X-ray structure determination; porphyrins; Ag(II); DFT; EPR
• Status: Published
• ISBN/ISSN/Other: ISSN: 1879-0259