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Strategies for synthesizing Mn_4CaOn models relevant to biological water oxidation

Kanady, Jacob S. and Tsui, Emily Y. and Lin, Po-Heng and Agapie, Theodor (2014) Strategies for synthesizing Mn_4CaOn models relevant to biological water oxidation. In: 248th American Chemical Society National Meeting & Exposition, August 10-14, 2014, San Francisco, CA.

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The biol. site of water oxidn.-the oxygen-evolving complex (OEC) of photosystem II-is a Mn_4CaO_5 heterometallic cluster, proposed to contain a Mn-_3CaO_4 cubane / open cubane unit with a fourth, dangling Mn bridged to the cubane through two oxido ligands. In past work we synthesized a Mn_3CaO_4 cubane supported by three acetates and a 1, 3,5-triarylbenzene framework contg. six pyridines and three alkoxides. More recently, incorporation of a fifth metal center has been targeted to complete the Mn_4Ca stoichiometry. A desymmetrized Mn_3CaO_4 complex has been made with reactivity complementary to the parent, sym. complex; synthetic strategies from this desymmetrized complex toward more accurate Mn4Ca models of the OEC will be discussed. Redox and acid/base reactivity will also be discussed, as both are relevant to the mechanism of water oxidn.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription Website
Tsui, Emily Y.0000-0001-6419-3954
Agapie, Theodor0000-0002-9692-7614
Alternate Title:Strategies for synthesizing Mn4CaOn models relevant to biological water oxidation
Additional Information:© 2014 American Chemical Society.
Record Number:CaltechAUTHORS:20140813-084102380
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48473
Deposited By: Tony Diaz
Deposited On:13 Aug 2014 16:07
Last Modified:09 Mar 2020 13:19

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