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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 8
BKCSDE 30(8)
August 20, 2009 

Synthesis and Spectroscopic Characterization of the New Sitting-atop Complexes from Reaction of Zirconyl Nitrate and Free Base meso-Tetraarylporphyrins in Mild Conditions
Hossein Dehghani*, Mohammad Reza Mansournia
Porphyrin, Zirconyl, SAT complex, Sitting-atop, Deformation
A series of sitting-atop (SAT) complexes, [(ZrO)H2t(X)pp(NO3)2], have been prepared via the reactions of free base meso-tetraarylporphyrins, H2t(X)pp, with zirconyl nitrate hydrate, ZrO(NO3)2·xH2O. The products have been characterized by a variety of methods including 1H NMR, 13C NMR, IR and UV-Vis spectroscopies, elemental analysis and conductance measurements. The data indicate that the meso-tetraarylporphyrins coordinate with two pyrrolenine nitrogen atoms to the zirconyl cation located above the distorted porphyrin plane and two protons remain on the pyrrole nitrogens. Such half sandwich-type sitting-atop complexes may be considered as models for the initial steps of the metallation of the macrocycles.
1715 - 1718
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