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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 4
BKCSDE 31(4)
April 20, 2010 

 
Title
Sandwich Intermediate Sitting-atop Complexation between Free Base
meso-tetraarylporphyrins and Tellurium(IV) chloride
Author
Hossein Dehghani*, Sara Bakhshayesh, Maryam Shaterian, Leila Motamedi
Keywords
i-SAT complex, Porphyrin, Tellurium(IV) chloride, Deformation
Abstract
Free base meso-tetraarylporphyrins (H2T(X)PP) react with tellurium(IV) chloride (TeCl4) in mild conditions for formation sandwich intermediate sitting-atop (i-SAT) complexes, [TeCl4(H2T(X)PP)2]. 1H NMR, 13C NMR, UV-vis, FT-IR and elemental analysis were used for characterization of the products. In the proposed structure of the i-SAT complexes, four pyrroles of each porphyrin ring are tilted alternatively up and down and this appropriates suitable orientation of lone pairs of two pyrrolenine nitrogens for electron donation to a tellurium center. 1H NMR and FT-IR results showed that in the produced complex, hydrogen atoms of porphyrin macrocycles remained on the pyrrole nitrogens.
Page
815 - 818
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