title: Towards models of the oxygen-evolving complex (OEC) of photosystem II: a Mn4Ca cluster of relevance to low oxidation states of the OEC.
abstract: Synthetic access has been achieved into high oxidation state Mn/Ca chemistry with the 4 : 1 Mn : Ca stoichiometry of the oxygen-evolving complex (OEC) of plants and cyanobacteria; the anion of (Et(3)NH)(2)[Mn(III)(4)Ca(O(2)CPh)(4)(shi)(4)] has a square pyramidal metal topology and an S = 0 ground state.
authors: Department of Chemistry, University of Patras, 26500 Patras, Greece.
authors: Evangelia S
authors: ES
authors: Koumousi
authors: Shreya
authors: S
authors: Mukherjee
authors: Christine M
authors: CM
authors: Beavers
authors: Simon J
authors: SJ
authors: Teat
authors: George
authors: G
authors: Christou
authors: Theocharis C
authors: TC
authors: Stamatatos
mesh_terms: D002118:Calcium / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry* / Q000378:metabolism; D045332:Photosystem II Protein Complex / Q000737:chemistry* / Q000378:metabolism
chemical_list: D045332:Photosystem II Protein Complex; D008345:Manganese; D010100:Oxygen; D002118:Calcium