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Cited by 19 publications
(19 citation statements)
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References 17 publications
(14 reference statements)
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“…Thus, this complex has been formulated with the electronic distribution, Cu II (OEB • ), with two paramagnetic centers, the copper(II) ion, and the biliverdin radical dianion. These four-coordinate complexes also undergo a series of one-electron transfer reactions which have been thoroughly documented for Co(OEB). , Additionally, octaethylbiliverdin itself undergoes a two-electron oxidation, and the product of that oxidation has been isolated and characterized by single-crystal X-ray diffraction …”
Section: Introductionmentioning
confidence: 97%
See 1 more Smart Citation
“…Thus, this complex has been formulated with the electronic distribution, Cu II (OEB • ), with two paramagnetic centers, the copper(II) ion, and the biliverdin radical dianion. These four-coordinate complexes also undergo a series of one-electron transfer reactions which have been thoroughly documented for Co(OEB). , Additionally, octaethylbiliverdin itself undergoes a two-electron oxidation, and the product of that oxidation has been isolated and characterized by single-crystal X-ray diffraction …”
Section: Introductionmentioning
confidence: 97%
“…In regard to question 2 above, octaethylbiliverdin (octaethylbilindione) is known to form complexes in which the tetrapyrrole ligand assumes a helical geometry which is dictated by the need of the two terminal lactam functions to overlap one another when the four pyrrole nitrogen atoms are coordinated to a metal ion of the size of a typical transition metal. With Fe(III) and Mn(III), five-coordinate dimers form in which one of the oxygen atoms of each of the tetrapyrroles serves as a ligand toward the metal that is coordinated by four of the nitrogen atoms from the adjacent tetrapyrrole. , The four-coordinate complexes Co(OEB), Ni(OEB), and Cu(OEB) have helical structures and unusual physical properties that reflect remarkable electronic structures. ,, For example, Cu(OEB) has magnetic moment of 2.7 μ B , a readily observed 1 H NMR spectrum, and no detectable EPR spectrum (under conditions where a copper(II) complex would produce an easily observable EPR spectrum) . Thus, this complex has been formulated with the electronic distribution, Cu II (OEB • ), with two paramagnetic centers, the copper(II) ion, and the biliverdin radical dianion.…”
Section: Introductionmentioning
confidence: 99%
“…[18,19,71] The reactivity of the terminal ligand positions has long and often been employed for metal-templated macrocyclization reactions in the synthesis of porphyrins, [72] corrins, [73][74][75] corroles, [76] and other porphyrinoids [77][78][79] from transition-metal bilinoids. In the case of the related verdoheme derivatives, several nucleophilic ringopening reactions have been described to occur at this position with a range of nucleophiles.…”
mentioning
confidence: 99%
“…In the analogous cobalt system, we have observed that PMe 3 converts the planar 15-electron metal-centered (RPc)Co radical to the 18 + δ ligand-centered (RPc)(PMe 3 ) 2 Co radical via 17-electron (RPc)(PMe 3 )Co, presumably also a metal-centered radical. Similar metal-to-ligand charge-transfer chemistry induced by a base has also been observed in the reactions of pyridine with (OETAP)Rh(II) to form (OETAP •- )(py) 2 Rh(III) 8 (OETAP = dianion of octaethyltetraazaporphyrin) and with [(oebOx)Co(II)] + (oeb = trianion of octaethylbilindione and oebOX = doubly oxidized oeb) to form [(oebOx •- )(py) 2 Co(III)] + . On the other hand, such charge-transfer reactions were not observed in the studies of various amines with some Co(II) complexes of porphyrins, phthalocyanines, and dimethylglyoximes .…”
Section: Discussionmentioning
confidence: 54%