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Stepwise effective molarities in porphyrin oligomer complexes: preorganization results in exceptionally strong chelate cooperativity.

Abstract:

Complexes of zinc porphyrin oligomers with multivalent ligands can be denatured by adding a large excess of a monodentate ligand, such as quinuclidine. We have used denaturation titrations to determine the stabilities of the complexes of a cyclic zinc-porphyrin hexamer with multidentate ligands with two to six pyridyl coordination sites. The corresponding complexes of linear porphyrin oligomers were also investigated. The results reveal that the stepwise effective molarities (EMs) for the thi...

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Publication status:
Published

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Publisher copy:
10.1021/ja209254r

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Organic Chemistry
Role:
Author
Journal:
Journal of the American Chemical Society
Volume:
133
Issue:
51
Pages:
20962-20969
Publication date:
2011-12-05
DOI:
EISSN:
1520-5126
ISSN:
0002-7863
URN:
uuid:95a3ae42-9e5c-417a-ae75-70e8eed5818e
Source identifiers:
216052
Local pid:
pubs:216052
Language:
English

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