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Synthetic strategies towards a Mn4CaOn model complex of the oxygen-evolving complex of photosystem II

Kanady, Jacob S. and Lin, Po-Heng and Tsui, Emily Y. and Agapie, Theodor (2014) Synthetic strategies towards a Mn4CaOn model complex of the oxygen-evolving complex of photosystem II. Abstracts of Papers of the American Chemical Society, 248 . 989-INOR. ISSN 0065-7727. https://resolver.caltech.edu/CaltechAUTHORS:20150323-084739582

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Abstract

The oxygen-evolving complex (OEC) of photosystem II is a Mn_4CaO_5 heterometallic cluster. In the past, we synthesized a structural model (1 ) of the Mn_3CaO_4 subsite of the OEC using a hexapyridyl, trialkoxide ligand. Addn. of the fourth, dangling manganese has been targeted to more fully mimic the structure of the OEC. The original complex 1, stabilized across three faces of the cubane by carboxylates, has been desymmetrized using a chelating bisoximate ligand by replacing two of the κ^2-carboxylates. The properties and reactivity of the desymmetrized Mn_3CaO_4 complex has been compared to the original, pseudo-C_3 sym. cluster, and its redox and acid/base chem. has been studied, as both are pertinent to the OEC mechanism. Strategies for synthesizing a Mn_4CaO-_n (n=4, 5) OEC model from the new, desymmetrized complex will be discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.acs.org/content/acs/en/meetings/fall-2014.htmlOrganizationConference Website
ORCID:
AuthorORCID
Tsui, Emily Y.0000-0001-6419-3954
Agapie, Theodor0000-0002-9692-7614
Additional Information:© 2014 American Chemical Society.
Record Number:CaltechAUTHORS:20150323-084739582
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150323-084739582
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55958
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Mar 2015 18:05
Last Modified:09 Mar 2020 13:19

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