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The Silver Complexes of Porphyrins, Corroles, and Carbaporphyrins: Silver in the Oxidation States II and III
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Abstract
Complexes of silver in the oxidation states II and III are frequently considered to be unstable and rare. However, the silver complexes of porphyrins, corroles, and carbaporphyrins are stable and well characterized examples of silver in these high oxidation states. Moreover, these complexes should not be regarded as exceptions or curiosities as their formation follow classic coordination chemistry rules. Their existence supports one of the tenets of coordination chemistry, namely, that a given ligand environment largely determines the oxidation state of a coordinated metal ion. The discussion will explain why stable AgII and AgIII complexes should not surprise, and why tetrapyrrolic ligands are ideally suited to provide these high oxidation state complexes. While the focus of the discussion is on the silver complexes, a discussion of the tetrapyrrolic metal complexes of the metals surrounding silver in the periodic table in group 10 (nickel group), 11 (coinage metal group), and 12 (zinc group) will help to put the silver chemistry into perspective and will highlight the generality of the findings.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Inorganic ChemistryKeywords (Feature):
Research: Science and EducationKeywords (Subject):
Coordination CompoundsCiting Articles
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This article has been cited by 3 ACS Journal articles (3 most recent appear below).
Egg-Citing! Isolation of Protoporphyrin IX from Brown Eggshells and Its Detection by Optical Spectroscopy and Chemiluminescence
Michelle L. Dean, Tyson A. Miller, and Christian BrücknerJournal of Chemical Education2011 88 (6), 788-792Egg-Citing! Isolation of Protoporphyrin IX from Brown Eggshells and Its Detection by Optical Spectroscopy and Chemiluminescence
Michelle L. Dean, Tyson A. Miller, and Christian BrücknerJournal of Chemical Education2011 88 (6), 788-792A simple and cost-effective laboratory experiment is described that extracts protoporphyrin IX from brown eggshells. The porphyrin is characterized by UV−vis and fluorescence spectroscopy. A chemiluminescence reaction (peroxyoxalate ester fragmentation) ...
Synthesis and Reactivity of N-Methyl and N-Phenyl meso-Unsubstituted N-Confused Porphyrins
Timothy D. Lash and Amber L. Von RudenThe Journal of Organic Chemistry2008 73 (23), 9417-9425Synthesis and Reactivity of N-Methyl and N-Phenyl meso-Unsubstituted N-Confused Porphyrins
Timothy D. Lash and Amber L. Von RudenThe Journal of Organic Chemistry2008 73 (23), 9417-9425Condensations of 1-methyl and 1-phenyl-2,4-pyrroledicarbaldehydes with a tripyrrane in TFA−dichloromethane, followed by oxidation with aqueous FeCl3, gave novel cross-conjugated meso-unsubstituted N-confused porphyrins (NCPs; 12). These porphyrin ...
Tetraphenyloxybenziporphyrin, a New Organometallic Ligand for Silver(III) and Gold(III)
Jessica A. El-Beck and Timothy D. LashOrganic Letters2006 8 (23), 5263-5266Tetraphenyloxybenziporphyrin, a New Organometallic Ligand for Silver(III) and Gold(III)
Jessica A. El-Beck and Timothy D. LashOrganic Letters2006 8 (23), 5263-5266Reaction of 4-hydroxyisophthalaldehyde with excess phenyl magnesium bromide gave a dicarbinol and this condensed with pyrrole and aromatic aldehydes in the presence of BF3·Et2O to afford, following oxidation with DDQ, novel tetraarylcarbaporphyrinoids in ...
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- Received: August 03, 2009
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