1
|
Koellner CA, Gau MR, Polyak A, Bayana M, Zdilla MJ. Hemicubane topological analogs of the oxygen-evolving complex of photosystem II mediating water-assisted propylene carbonate oxidation. Chem Commun (Camb) 2022; 58:2532-2535. [PMID: 35098954 DOI: 10.1039/d1cc05825h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Ca-Mn clusters with the ligand 2-pyridinemethoxide (Py-CH2O) have been prepared with varying degrees of topological similarity to the biological oxygen-evolving complex. These clusters activate water as a substrate in the oxidative degradation of propylene carbonate, with activity correlated with topological similarity to the OEC, lowering the onset potential of the oxidation by as much as 700 mV.
Collapse
Affiliation(s)
- Connor A Koellner
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania, 231 S 34th St, Philadelphia, PA, 19104, USA
| | - Aleksander Polyak
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.
| | - Manish Bayana
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.
| | - Michael J Zdilla
- Department of Chemistry, Temple University, 1901 N. 13th St., Philadelphia, PA, 19122, USA.
| |
Collapse
|
2
|
Zahran ZN, Tsubonouchi Y, Mohamed EA, Yagi M. Recent Advances in the Development of Molecular Catalyst-Based Anodes for Water Oxidation toward Artificial Photosynthesis. CHEMSUSCHEM 2019; 12:1775-1793. [PMID: 30793506 DOI: 10.1002/cssc.201802795] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Catalytic water oxidation represents a bottleneck for developing artificial photosynthetic systems that store solar energy as renewable fuels. A variety of molecular water oxidation catalysts (WOCs) have been reported over the last two decades. In view of their applications in artificial photosynthesis devices, it is essential to immobilize molecular catalysts onto the surfaces of conducting/semiconducting supports for fabricating efficient and stable water oxidation anodes/photoanodes. Molecular WOC-based anodes are essential for developing photovoltaic artificial photosynthesis devices and, moreover, the performance of molecular WOC on anodes will provide important insight into designing extended molecular WOC-based photoanodes for photoelectrochemical (PEC) water oxidation. This Review concerns recent progress in the development of molecular WOC-based anodes over the last two decades and looks at the prospects for using such anodes in artificial photosynthesis.
Collapse
Affiliation(s)
- Zaki N Zahran
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata, 9050-2181, Japan
- Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Yuta Tsubonouchi
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata, 9050-2181, Japan
| | - Eman A Mohamed
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata, 9050-2181, Japan
| | - Masayuki Yagi
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata, 9050-2181, Japan
| |
Collapse
|
3
|
Mixed-valent tetranuclear manganese complexes with pentadentate Schiff-base ligand having a Y-shaped core. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0305-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
4
|
Schwarz B, Forster J, Goetz MK, Yücel D, Berger C, Jacob T, Streb C. Lichtinduzierte Wasseroxidation durch ein molekulares Manganvanadiumoxid. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601799] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Benjamin Schwarz
- Institut für Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Johannes Forster
- Institut für Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - McKenna K. Goetz
- Institut für Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Duygu Yücel
- Institut für Elektrochemie; Universität Ulm; Albert-Einstein-Allee 47 89081 Ulm Deutschland
| | - Claudia Berger
- Institut für Elektrochemie; Universität Ulm; Albert-Einstein-Allee 47 89081 Ulm Deutschland
| | - Timo Jacob
- Institut für Elektrochemie; Universität Ulm; Albert-Einstein-Allee 47 89081 Ulm Deutschland
| | - Carsten Streb
- Institut für Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Deutschland
| |
Collapse
|
5
|
Schwarz B, Forster J, Goetz MK, Yücel D, Berger C, Jacob T, Streb C. Visible-Light-Driven Water Oxidation by a Molecular Manganese Vanadium Oxide Cluster. Angew Chem Int Ed Engl 2016; 55:6329-33. [PMID: 27062440 DOI: 10.1002/anie.201601799] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Indexed: 11/08/2022]
Abstract
Photosynthetic water oxidation in plants occurs at an inorganic calcium manganese oxo cluster, which is known as the oxygen evolving complex (OEC), in photosystem II. Herein, we report a synthetic OEC model based on a molecular manganese vanadium oxide cluster, [Mn4 V4 O17 (OAc)3 ](3-) . The compound is based on a [Mn4 O4 ](6+) cubane core, which catalyzes the homogeneous, visible-light-driven oxidation of water to molecular oxygen and is stabilized by a tripodal [V4 O13 ](6-) polyoxovanadate and three acetate ligands. When combined with the photosensitizer [Ru(bpy)3 ](2+) and the oxidant persulfate, visible-light-driven water oxidation with turnover numbers of approximately 1150 and turnover frequencies of about 1.75 s(-1) is observed. Electrochemical, mass-spectrometric, and spectroscopic studies provide insight into the cluster stability and reactivity. This compound could serve as a model for the molecular structure and reactivity of the OEC and for heterogeneous metal oxide water-oxidation catalysts.
Collapse
Affiliation(s)
- Benjamin Schwarz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Johannes Forster
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - McKenna K Goetz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Duygu Yücel
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Claudia Berger
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Timo Jacob
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
| |
Collapse
|
6
|
Crystal structures and magnetic properties of manganese(III) complexes with tridentate Schiff base ligands. J INCL PHENOM MACRO 2015. [DOI: 10.1007/s10847-015-0492-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Van Allsburg KM, Anzenberg E, Drisdell WS, Yano J, Tilley TD. Oxygen‐Atom Transfer Chemistry and Thermolytic Properties of a Di‐
tert
‐Butylphosphate‐Ligated Mn
4
O
4
Cubane. Chemistry 2015; 21:4646-54. [DOI: 10.1002/chem.201406114] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Kurt M. Van Allsburg
- Department of Chemistry, University of California, 420 Latimer Hall, Berkeley, CA 94720 (USA)
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory (USA)
- Materials Sciences Division, Lawrence Berkeley National Laboratory (USA)
| | - Eitan Anzenberg
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory (USA)
- Materials Sciences Division, Lawrence Berkeley National Laboratory (USA)
| | - Walter S. Drisdell
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory (USA)
- Materials Sciences Division, Lawrence Berkeley National Laboratory (USA)
| | - Junko Yano
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory (USA)
- Physical Biosciences Division, Lawrence Berkeley National Laboratory (USA)
| | - T. Don Tilley
- Department of Chemistry, University of California, 420 Latimer Hall, Berkeley, CA 94720 (USA)
- Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory (USA)
- Chemical Sciences Division, Lawrence Berkeley National Laboratory (USA)
| |
Collapse
|
8
|
Mechanism for O-O bond formation in a biomimetic tetranuclear manganese cluster--A density functional theory study. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 152:162-72. [PMID: 25534173 DOI: 10.1016/j.jphotobiol.2014.12.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 11/25/2014] [Accepted: 12/01/2014] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations have been used to study the reaction mechanism of water oxidation catalyzed by a tetranuclear Mn-oxo cluster Mn4O4L6 (L=(C6H4)2PO4(-)). It is proposed that the O-O bond formation mechanism is different in the gas phase and in a water solution. In the gas phase, upon phosphate ligand dissociation triggered by light absorption, the O-O bond formation starting with both the Mn4(III,III,IV,IV) and Mn4(III,IV,IV,IV) oxidation states has to take place via direct coupling of two bridging oxo groups. The calculated barriers are 42.3 and 37.1 kcal/mol, respectively, and there is an endergonicity of more than 10 kcal/mol. Additional photons are needed to overcome these large barriers. In water solution, water binding to the two vacant sites of the Mn ions, again after phosphate dissociation triggered by light absorption, is thermodynamically and kinetically very favorable. The catalytic cycle is suggested to start from the Mn4(III,III,III,IV) oxidation state. The removal of three electrons and three protons leads to the formation of a Mn4(III,IV,IV,IV)-oxyl radical complex. The O-O bond formation then proceeds via a nucleophilic attack of water on the Mn(IV)-oxyl radical assisted by a Mn-bound hydroxide that abstracts a proton during the attack. This step was calculated to be rate-limiting with a total barrier of 29.2 kcal/mol. This is followed by proton-coupled electron transfer, O2 release, and water binding to start the next catalytic cycle.
Collapse
|
9
|
Carrell TG, Smith PF, Dennes J, Dismukes GC. Entropy and enthalpy contributions to the kinetics of proton coupled electron transfer to the Mn4O4(O2PPh2)6 cubane. Phys Chem Chem Phys 2014; 16:11843-7. [PMID: 24643330 DOI: 10.1039/c3cp55200d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dependence of rate, entropy of activation, and ((1)H/(2)H) kinetic isotope effect for H-atom transfer from a series of p-substituted phenols to cubane Mn4O4L6 (L = O2PPh2) (1) reveals the activation energy to form the transition state is proportional to the phenolic O-H bond dissociation energy. New implications for water oxidation and charge recombination in photosystem II are described.
Collapse
Affiliation(s)
- Thomas G Carrell
- Department of Chemistry, Princeton University, Princeton, NJ 08540, USA
| | | | | | | |
Collapse
|
10
|
Hocking RK, Malaeb R, Gates WP, Patti AF, Chang SLY, Devlin G, MacFarlane DR, Spiccia L. Formation of a Nanoparticulate Birnessite-Like Phase in Purported Molecular Water Oxidation Catalyst Systems. ChemCatChem 2014. [DOI: 10.1002/cctc.201400066] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
11
|
Yamaguchi K, Kitagawa Y, Isobe H, Shoji M, Yamanaka S, Okumura M. Reprint of “Theory of chemical bonds in metalloenzymes XVIII. Importance of mixed-valence configurations for Mn5O5, CaMn4O5 and Ca2Mn3O5 clusters revealed by UB3LYP computations. A bio-inspired strategy for artificial photosynthesis”. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
12
|
Yamaguchi K, Shoji M, Isobe H, Kitagawa Y, Yamada S, Kawakami T, Yamanaka S, Okumura M. Theory of chemical bonds in metalloenzymes XVI. Oxygen activation by high-valent transition metal ions in native and artificial systems. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
13
|
Hirahara M, Shoji A, Yagi M. Artificial Manganese Center Models for Photosynthetic Oxygen Evolution in Photosystem II. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300683] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
14
|
Yamaguchi K, Kitagawa Y, Isobe H, Shoji M, Yamanaka S, Okumura M. Theory of chemical bonds in metalloenzymes XVIII. Importance of mixed-valence configurations for Mn5O5, CaMn4O5 and Ca2Mn3O5 clusters revealed by UB3LYP computations. A bio-inspired strategy for artificial photosynthesis. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
15
|
Water-oxidation catalysis by manganese in a geochemical-like cycle. Nat Chem 2011; 3:461-6. [PMID: 21602861 DOI: 10.1038/nchem.1049] [Citation(s) in RCA: 338] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 04/08/2011] [Indexed: 01/31/2023]
|
16
|
Hamilton CR, Baglia RA, Gordon AD, Zdilla MJ. Synthesis of Tetranuclear, Four-Coordinate Manganese Clusters with “Pinned Butterfly” Geometry Formed by Metal-Mediated N−N Bond Cleavage in Diphenylhydrazine. J Am Chem Soc 2011; 133:4208-11. [DOI: 10.1021/ja110536t] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Clifton R. Hamilton
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Regina A. Baglia
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Alexander D. Gordon
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Michael J. Zdilla
- Department of Chemistry, Temple University, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| |
Collapse
|
17
|
Yamazaki H, Shouji A, Kajita M, Yagi M. Electrocatalytic and photocatalytic water oxidation to dioxygen based on metal complexes. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.02.008] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
18
|
Dau H, Limberg C, Reier T, Risch M, Roggan S, Strasser P. The Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis. ChemCatChem 2010. [DOI: 10.1002/cctc.201000126] [Citation(s) in RCA: 1320] [Impact Index Per Article: 94.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
19
|
Brimblecombe R, Kolling DRJ, Bond AM, Dismukes GC, Swiegers GF, Spiccia L. Sustained Water Oxidation by [Mn4O4]7+ Core Complexes Inspired by Oxygenic Photosynthesis. Inorg Chem 2009; 48:7269-79. [DOI: 10.1021/ic9006982] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Robin Brimblecombe
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- Department of Chemistry and the Princeton Environmental Institute, Princeton University, Princeton, New Jersey 08544
| | - Derrick R. J. Kolling
- Department of Chemistry and the Princeton Environmental Institute, Princeton University, Princeton, New Jersey 08544
| | - Alan M. Bond
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - G. Charles Dismukes
- Department of Chemistry and the Princeton Environmental Institute, Princeton University, Princeton, New Jersey 08544
| | - Gerhard F. Swiegers
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Leone Spiccia
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| |
Collapse
|
20
|
Beckmann J, Duthie A, Rüttinger R, Schwich T. Hydrothermal Synthesis of Chiral Metal(II) Phosphinates Derived from Camphor. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200900065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Yagi M, Syouji A, Yamada S, Komi M, Yamazaki H, Tajima S. Molecular catalysts for wateroxidation toward artificial photosynthesis. Photochem Photobiol Sci 2009. [DOI: 10.1039/b811098k] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
22
|
Brimblecombe R, Bond AM, Dismukes GC, Swiegers GF, Spiccia L. Electrochemical investigation of Mn4O4-cubane water-oxidizing clusters. Phys Chem Chem Phys 2009; 11:6441-9. [DOI: 10.1039/b901419e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
Prodius D, Mereacre V, Gdaniec M, Shova S, Simonov YA, Stanica N, Geru I, Caneschi A, Turta C. Carboxylate Substitution Pattern as Structural Directive for the Final Products: Synthesis, Structure And Properties of [Fe4Ca2O2(μ2-HCCl2COO)10(μ3-HCCl2COO)2(THF)6]. CHEMISTRY JOURNAL OF MOLDOVA 2008. [DOI: 10.19261/cjm.2008.03(2).06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A novel hexanuclear iron-calcium-oxo complex has been synthesized and characterized by different physico-chemical methods and X-ray single crystal structural analysis: [Fe4Ca2O2(μ2-HCCl2COO)10(μ3-HCCl2COO)2(THF)6].The molecular structure shows that there are two types of coordination for COO- anions: bidentate and tridentate. The corresponding variable temperature susceptibility measurement shows that in the complex there exists an antiferromagnetic interaction (|J12| = |J34| = -71.86 cm-1). The iron(III) high spin state (5/2) is proved by Mössbauer spectroscopy. High magnetic EPR measurements of 1 indicates the presence of S=0 ground state with low-lying S=1 excited state centred around g = 2.0054 ±0.0001.
Collapse
|
24
|
Brimblecombe R, Swiegers G, Dismukes G, Spiccia L. Sustained Water Oxidation Photocatalysis by a Bioinspired Manganese Cluster. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801132] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
25
|
Brimblecombe R, Swiegers G, Dismukes G, Spiccia L. Sustained Water Oxidation Photocatalysis by a Bioinspired Manganese Cluster. Angew Chem Int Ed Engl 2008; 47:7335-8. [DOI: 10.1002/anie.200801132] [Citation(s) in RCA: 251] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
26
|
Zhu XQ, Dai Z, Yu A, Wu S, Cheng JP. Driving Forces for the Mutual Conversions between Phenothiazines and Their Various Reaction Intermediates in Acetonitrile. J Phys Chem B 2008; 112:11694-707. [DOI: 10.1021/jp8041268] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Xiao-Qing Zhu
- Department of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhi Dai
- Department of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Ao Yu
- Department of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Shuai Wu
- Department of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jin-Pei Cheng
- Department of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
27
|
Abstract
Photosystem II (PSII) uses light energy to split water into protons, electrons and O2. In this reaction, nature has solved the difficult chemical problem of efficient four-electron oxidation of water to yield O2 without significant amounts of reactive intermediate species such as superoxide, hydrogen peroxide and hydroxyl radicals. In order to use nature's solution for the design of artificial catalysts that split water, it is important to understand the mechanism of the reaction. The recently published X-ray crystal structures of cyanobacterial PSII complexes provide information on the structure of the Mn and Ca ions, the redox-active tyrosine called YZ and the surrounding amino acids that comprise the O2-evolving complex (OEC). The emerging structure of the OEC provides constraints on the different hypothesized mechanisms for O2 evolution. The water oxidation mechanism of PSII is discussed in the light of biophysical and computational studies, inorganic chemistry and X-ray crystallographic information.
Collapse
Affiliation(s)
- Gary W Brudvig
- Department of Chemistry, Yale University, PO Box 208107, New Haven, CT 06520-8107, USA.
| |
Collapse
|
28
|
Tagore R, Crabtree RH, Brudvig GW. Oxygen Evolution Catalysis by a Dimanganese Complex and Its Relation to Photosynthetic Water Oxidation. Inorg Chem 2008; 47:1815-23. [DOI: 10.1021/ic062218d] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ranitendranath Tagore
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| | - Gary W. Brudvig
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107
| |
Collapse
|
29
|
Mullins CS, Pecoraro VL. Reflections on Small Molecule Manganese Models that Seek to Mimic Photosynthetic Water Oxidation Chemistry. Coord Chem Rev 2008; 252:416-443. [PMID: 19081816 PMCID: PMC2597837 DOI: 10.1016/j.ccr.2007.07.021] [Citation(s) in RCA: 311] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Recent advances in the study of the Oxygen Evolving Complex (OEC) of Photosystem II (PSII) include structural information attained from several X-ray crystallographic (XRD) and spectroscopic (XANES and EXAFS) investigations. The possible structural features gleaned from these studies have enabled synthetic chemists to design more accurate model complexes, which in turn, offer better insight into the possible pathways used by PSII to drive photosynthetic water oxidation catalysis. Mononuclear model compounds have been used to advance the knowledge base regarding the physical properties and reactivity of high-valent (Mn(IV) or Mn(V)) complexes. Such investigations have been especially important in regard to the manganyl (Mn(IV)=O or Mn(V)≡O) species, as there are no reports, to date, of any structural characterized multinuclear model compounds that incorporate such a functionality. Dinuclear and trinuclear model compounds have also been thoroughly studied in attempts to draw further comparison to the physical properties observed in the natural system and to design systems of catalytic relevance. As the reactive center of the OEC has been shown to contain an oxo-Mn(4)Ca cluster, exact structural models necessitate a tetranuclear Mn core. The number of models that make use of Mn(4) clusters has risen substantially in recent years, and these models have provided evidence to support and refute certain mechanistic proposals. Further work is needed to adequately address the rationale for Ca (and Cl) in the OEC and to determine the sequence of events that lead to O(2) evolution.
Collapse
Affiliation(s)
- Christopher S Mullins
- Department of Chemistry, The University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
| | | |
Collapse
|
30
|
Wang Y, Cheng P, Song Y, Liao DZ, Yan SP. Self-Assembly and Anion-Exchange Properties of a Discrete Cage and 3D Coordination Networks Based on Cage Structures. Chemistry 2007; 13:8131-8. [PMID: 17614306 DOI: 10.1002/chem.200700431] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
By using tridentate ligand 4-(3-pyridinyl)-1,2,4-triazole (pytrz), cage-like complexes of {[Cu(mu2-pytrz)2](ClO4)(SO4)0.5C2H5OH.0.25 H2O}6 (1), {[Cu3(mu3-pytrz)4(mu2-Cl)2(H2O)2](ClO4)2Cl(2).2 H2O}n (2), and {[Cu3(mu3-pytrz)3(mu3-O)(H2O)3](ClO4)2.5(BF4)(1.5)5.25 H2O}n (3) have been synthesized with different copper(II) salts. Complex 1 represents the second example of a M6L12 metal-organic octahedron with an overall Th symmetry. Complex 2 is constructed from a 3(8) cage-building unit (CBU) and each CBU connects six neighboring cages to give the first 3D metal-organic framework (MOF) based on octahedral M6L12. Complex 3 is built from Cu24(pytrz)12 CBUs with the trinuclear copper clusters serving as second building units (SBUs) and decorating each corner of the M24L12 polyhedron. The Cu24(pytrz)12 building unit is linked by extra ligands to give an extended 3D framework that has the formula Cu24(pytrz)24 and possesses a CaB6 topology. The mixed anions ClO4- and BF4- in 3 are both included in the inner cavity of the cage and can be completely exchanged by ClO4- through the open windows of the cage, as evidenced by the crystal structure of the 3D MOF {[Cu3(mu3-pytrz)3(mu3-O)(H2O)3](ClO4)(4)4.5 H2O}n (4). Complex 4 can also be synthesized when employing 1 as a precursor in an extensive study of the anion-exchange reaction. This represents the first successful conversion of a discrete cage into a 3D coordination network based on a cage structure. Complex 2 remains invariable during anion-exchange reactions because uncoordinated Cl- ions are located in the comparatively small inner cavity.
Collapse
Affiliation(s)
- Ying Wang
- Department of Chemistry, Nankai University, Tianjin 300071, China
| | | | | | | | | |
Collapse
|
31
|
Feng PL, Beedle CC, Wernsdorfer W, Koo C, Nakano M, Hill S, Hendrickson DN. Heterometallic Cubane Single-Molecule Magnets. Inorg Chem 2007; 46:8126-8. [PMID: 17824608 DOI: 10.1021/ic7012107] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new heterometallic cubane molecules have been synthesized. High-frequency electron paramagnetic resonance and magnetization measurements indicate that [Mn(3)Ni(hmp)(3)O(N(3))(3)(C(7)H(5)O(2))(3)] (1) displays a well-isolated S = 5 ground state (DeltaE > 120 K), with g = 2.0, D = -0.23 cm(-1), and ferromagnetic Mn-Mn exchange interactions competing with antiferromagnetic Ni-Mn interactions. [Mn(3)Zn(hmp)(3)O(N(3))(3)(C(3)H(5)O(2))(3)] (2) possesses a S = 6 ground state (DeltaE > 105 K), with g = 2.0, D = -0.14 cm(-1), and ferromagnetic Mn-Mn exchange interactions. Magnetization vs magnetic field data for oriented single crystals of 1 and 2 indicate that both complexes are single-molecule magnets.
Collapse
Affiliation(s)
- Patrick L Feng
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA
| | | | | | | | | | | | | |
Collapse
|
32
|
Affiliation(s)
- James P McEvoy
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
| | | |
Collapse
|
33
|
Wu J, Song Y, Zhang E, Hou H, Fan Y, Zhu Y. Studies on Cage-Type Tetranuclear Metal Clusters with Ferrocenylphosphonate Ligands. Chemistry 2006; 12:5823-31. [PMID: 16721869 DOI: 10.1002/chem.200500905] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Reaction of FcCH(2)PO(3)H(2) [Fc=(eta(5)-C(5)H(5))Fe(eta(5)-C(5)H(4))] (H(2)FMPA) and 1,10-phenanthroline (phen) with Cd(OAc)(2).2 H(2)O or ZnSO(4).7 H(2)O in methanol in the presence of triethylamine resulted in the formation of two new ferrocenylphosphonate metal-cage complexes [M(4)(fmpa)(4)(phen)(4)] 7 CH(3)OH (M=Cd 1, M=Zn 2). Both structures contain two kinds of isomeric tetranuclear metal phosphonate cages, which are linked to one another by pi-pi interactions between the phen molecules. In 1, the Cd1, Cd3, and Cd4 atoms are all pentacoordinate, while the Cd2 atom is coordinated by four oxygen atoms from three phosphonate ligands and two nitrogen atoms from the chelating phen in a distorted octahedral geometry. Four Cd atoms from each unit are interconnected through bridging phosphonate ligands with different coordination modes, such as 5.221, 4.211, and 2.11 (Harris notation), yielding a {Cd(4)} cage. In 2, each Zn atom is coordinated by three oxygen atoms from three phosphonate ligands and two nitrogen atoms from phen, leading to a distorted square-pyramidal geometry. The four Zn atoms of each isomeric unit are also interconnected through four bridging phosphonate ligands to yield a {Zn(4)} cage. Fluorescent studies indicate that ligand-to-ligand charge-transfer photoluminescence is observed for 1, while the emission bands of 2 can be assigned to an admixture of ligand-to-ligand and metal-to-ligand charge transfer. Solution-state differential pulse voltammetry indicates that the half-wave potentials of the ferrocenyl moieties in 1 and 2 have different deviations relative to the relevant H(2)FMPA ligand. This may be because the highest occupied molecular orbital (HOMO) in 1 is located in the FMPA(2-) groups, while in 2 the HOMO is located in the phen and Zn(II) groups, so the Fe(II) centers in complex 1 are more easily oxidized to Fe(III) centers than those of 2. The third-order nonlinear optical (NLO) measurements show that both 1 and 2 exhibit strong third-order NLO self-focusing effects; hence, they are promising candidates for NLO materials. By calculating the component of the lowest unoccupied molecular orbitals of 1 and 2, we confirmed that the co-planar phen rings control their optical nonlinearity, while the H(2)FMPA ligands and metal ions have only a weak influence on their NLO properties.
Collapse
Affiliation(s)
- Jie Wu
- Department of Chemistry, Zhengzhou University, Zhengzhou, 450052, China
| | | | | | | | | | | |
Collapse
|
34
|
Du ZY, Xu HB, Mao JG. Three Novel Zinc(II) Sulfonate−Phosphonates with Tetranuclear or Hexanuclear Cluster Units. Inorg Chem 2006; 45:6424-30. [PMID: 16878954 DOI: 10.1021/ic0606577] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrothermal reactions of zinc(II) carbonate with m-sulfophenylphosphonic acid (m-HO3S-Ph-PO3H2) and 1,10-phenanthroline (phen) or 4,4'-bipyridine (bipy) lead to three novel zinc(II) sulfonate-phosphonates, namely, [Zn(phen)3]2[Zn4(m-O3S-Ph-PO3)4(phen)4].20H2O (1), [Zn6(m-O3S-Ph-PO3)4(phen)8].11H2O (2), and [Zn6(m-O3S-Ph-PO3)4(bipy)6(H2O)4].18H2O (3). Compound 1 contains a tetranuclear zinc(II) cluster anion in which four Zn(II) ions are bridged by two tetradentate and two bidentate phosphonate groups, and the four negative charges of the cluster are compensated by two [Zn(phen)3]2+ cations. Compound 2 features a hexanuclear zinc(II) cluster in which the same tetranuclear cluster of 1 is bridged with two additional Zn(II) ions. The structure of 3 features a porous 3D network based on hexanuclear zinc(II) units of [Zn6(m-O3S-Ph-PO3)4] interconnected by 4,4'-bipy ligands. The hexanuclear cluster in 3 is different from that in 2 in that all four phosphonate groups in 3 are tridentate bridging. Compounds 1, 2, and 3 exhibit broad blue fluorescent emission bands at 378, 409, and 381 nm, respectively.
Collapse
Affiliation(s)
- Zi-Yi Du
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China
| | | | | |
Collapse
|
35
|
Wu JZ, De Angelis F, Carrell TG, Yap GPA, Sheats J, Car R, Dismukes GC. Tuning the Photoinduced O2-Evolving Reactivity of Mn4O47+, Mn4O46+, and Mn4O3(OH)6+ Manganese−Oxo Cubane Complexes. Inorg Chem 2005; 45:189-95. [PMID: 16390055 DOI: 10.1021/ic051587r] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The manganese-oxo "cubane" core complex Mn(4)O(4)L(1)(6) (1, L(1) = Ph(2)PO(2-)), a partial model of the photosynthetic water oxidation site, was shown previously to undergo photodissociation in the gas phase by releasing one phosphinate anion, an O(2) molecule, and the intact butterfly core cation (Mn(4)O(2)L(1)(5+)). Herein, we investigate the photochemistry and electronic structure of a series of manganese-oxo cubane complexes: [Mn(4)O(4)L(2)(6)] (2), 1(+)(ClO(4-)), 2(+)(ClO(4-)), and Mn(4)O(3)(OH)L(1)(6) (1H). We report the atomic structure of [Mn(4)O(4)L(2)(6)](ClO(4)), 2(+)(ClO(4-)) [L(2) = (4-MeOPh)(2)PO(2-)]. UV photoexcitation of a charge-transfer band dissociates one phosphinate, two core oxygen atoms, and the Mn(4)O(2)L(5)(+) butterfly as the dominant (or exclusive) photoreaction of all cubane derivatives in the gas phase, with relative yields: 1H >> 2 > 1 > 2(+) > 1(+). The photodissociation yield increases upon (1) reducing the core oxidation state by hydrogenation of a corner oxo (1H), (2) increasing the electron donation from the phosphinate ligand (L(2)), and (3) reducing the net charge from +1 to 0. The experimental Mn-O bond lengths and Mn-O bond strengths and the calculated ligand binding energy explain these trends in terms of weaker binding of phosphinate L(2) versus L(1) by 14.7 kcal/mol and stronger Mn-(mu(3)-O)(core) bonds in the oxidized complexes 2(+) and 1(+) versus 2 and 1. The calculated electronic structure accounts for these trends in terms of the binding energy and antibonding Mn-O(core) and Mn-O'(ligand) character of the degenerate highest occupied molecular orbital (HOMO), including (1) energetic destabilization of the HOMO of 2 relative to 1 by 0.75 eV and (2) depopulation of the antibonding HOMO and increased ionic binding in 1(+) and 2(+) versus 1 and 2.
Collapse
Affiliation(s)
- Jian-Zhong Wu
- Department of Chemistry, Princeton University, New Jersey 08544, USA
| | | | | | | | | | | | | |
Collapse
|
36
|
Mukhopadhyay S, Mandal SK, Bhaduri S, Armstrong WH. Manganese clusters with relevance to photosystem II. Chem Rev 2005; 104:3981-4026. [PMID: 15352784 DOI: 10.1021/cr0206014] [Citation(s) in RCA: 481] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sumitra Mukhopadhyay
- Department of Chemistry, Eugene F Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467-3860, USA
| | | | | | | |
Collapse
|
37
|
Lei C, Mao JG, Sun YQ, Dong ZC. Novel inorganic–organic hybrids based on oxo-bridged M6(M) centered octahedral cage. Polyhedron 2005. [DOI: 10.1016/j.poly.2004.11.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
38
|
|
39
|
Lei C, Mao JG, Sun YQ, Zeng HY, Clearfield A. {Zn6[MeN(CH2CO2)(CH2PO3)]6(Zn)}4- Anion: The First Example of the Oxo-Bridged Zn6 Octahedron with a Centered Zn(II) Cation. Inorg Chem 2003; 42:6157-9. [PMID: 14514287 DOI: 10.1021/ic034137c] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydrothermal reactions of N-(phosphonomethyl)-N-methylglycine, MeN(CH(2)CO(2)H)(CH(2)PO(3)H(2)) (H(3)L), with zinc(II) acetate resulted in the formation of a novel zinc carboxylate-phosphonate, [Zn(6)L(6)(Zn)][Zn(H(2)O)(6)](2) x 22H(2)O (1). The structure of 1 contains a heptanuclear zinc phosphonate cluster anion, [Zn(6)L(6)(Zn)](4-), in which seven zinc(II) cations form an unusual Zn(6)(Zn) centered octahedron with six of its Zn(3) triangle faces each further capped by a phosphonate group. The Zn(II) cations of the Zn(6) octahedron are five-coordinated whereas the centered Zn(II) cation is octahedrally coordinated. Packing of these cluster anions creates micropores occupied by the hydrated zinc(II) cations as well as lattice water molecules. The structural skeleton of 1 is retained after the removal of the lattice water molecules.
Collapse
Affiliation(s)
- Chong Lei
- State Key Laboratory for Structure Chemistry, Fujian Institute for Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | | | | | | | | |
Collapse
|
40
|
Maneiro M, Ruettinger WF, Bourles E, McLendon GL, Dismukes GC. Kinetics of proton-coupled electron-transfer reactions to the manganese-oxo "cubane" complexes containing the Mn4O4(6+) and Mn4O4(7+) core types. Proc Natl Acad Sci U S A 2003; 100:3707-12. [PMID: 12644708 PMCID: PMC152986 DOI: 10.1073/pnas.0637229100] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2002] [Indexed: 11/18/2022] Open
Abstract
The kinetics of proton-coupled electron-transfer (pcet) reactions are reported for Mn(4)O(4)(O(2)PPh(2))(6), 1, and [Mn(4)O(4)(O(2)PPh(2))(6)](+), 1(+), with phenothiazine (pzH). Both pcet reactions form 1H, by H transfer to 1 and by hydride transfer to 1(+). Surprisingly, the rate constants differ by only 25% despite large differences in the formal charges and driving force. The driving force is proportional to the difference in the bond-dissociation energies (BDE >94 kcalmol for homolytic, 1H --> H + 1, vs. approximately 127 kcalmol for heterolytic, 1H --> H(-) + 1(+), dissociation of the OH bond in 1H). The enthalpy and entropy of activation for the homolytic reaction (deltaH = -1.2 kcalmol and deltaS= -32 calmol.K; 25-6.7 degrees C) reveal a low activation barrier and an appreciable entropic penalty in the transition state. The rate-limiting step exhibits no HD kinetic isotope effect (k(H)k(D) = 0.96) for the first H atom-transfer step and a small kinetic isotope effect (1.4) for the second step (1H + pzH --> 1H(2) + pz(*)). These lines of evidence indicate that formation of a reactive precursor complex before atom transfer is rate-limiting (conformational gating), and that little or no NH bond cleavage occurs in the transition state. H-atom transfer from pzH to alkyl, alkoxyl, and peroxyl radicals reveals that BDEs are not a good predictor of the rates of this reaction. Hydride transfer to 1(+) provides a concrete example of two-electron pcet that is hypothesized for the OH bond cleavage step during catalysis of photosynthetic water oxidation.
Collapse
Affiliation(s)
- Marcelino Maneiro
- Department of Chemistry, Hoyt Laboratory, Princeton University, Princeton, NJ 08544, USA
| | | | | | | | | |
Collapse
|
41
|
|
42
|
Yagi M, Wolf KV, Baesjou PJ, Bernasek SL, Dismukes GC. Selective Photoproduction of O2 from the Mn4O4 Cubane Core: A Structural and Functional Model for the Photosynthetic Water-Oxidizing Complex. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010803)113:15<3009::aid-ange3009>3.0.co;2-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
43
|
Yagi M, Wolf KV, Baesjou PJ, Bernasek SL, Dismukes GC. Selective Photoproduction of O2 from the Mn4O4 Cubane Core: A Structural and Functional Model for the Photosynthetic Water-Oxidizing Complex. Angew Chem Int Ed Engl 2001; 40:2925-2928. [DOI: 10.1002/1521-3773(20010803)40:15<2925::aid-anie2925>3.0.co;2-7] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2001] [Indexed: 11/09/2022]
|
44
|
Brechin EK, Coxall RA, Parkin A, Parsons S, Tasker PA, Winpenny REP. Polymetallic Cobalt and Manganese Cages with Phosphinate and Phosphonate Ligands. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010716)113:14<2772::aid-ange2772>3.0.co;2-p] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
45
|
Brechin EK, Coxall RA, Parkin A, Parsons S, Tasker PA, Winpenny REP. Polymetallic Cobalt and Manganese Cages with Phosphinate and Phosphonate Ligands. Angew Chem Int Ed Engl 2001; 40:2700-2703. [DOI: 10.1002/1521-3773(20010716)40:14<2700::aid-anie2700>3.0.co;2-c] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2001] [Indexed: 11/09/2022]
|
46
|
Ananyev GM, Zaltsman L, Vasko C, Dismukes GC. The inorganic biochemistry of photosynthetic oxygen evolution/water oxidation. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1503:52-68. [PMID: 11115624 DOI: 10.1016/s0005-2728(00)00215-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
At the request of the organizer of this special edition, we have attempted to do several things in this manuscript: (1) we present a mini-review of recent, selected, works on the light-induced inorganic biogenesis (photoactivation), composition and structure of the inorganic core responsible for photosynthetic water oxidation; (2) we summarize a new proposal for the evolutionary origin of the water oxidation catalyst which postulates a key role for bicarbonate in formation of the inorganic core; (3) we summarize published studies and present new results on what has been learned from studies of 'inorganic mutants' in which the endogenous cofactors (Mn(n+), Ca2+, Cl-) are substituted; (4) the first DeltapH changes measured during the photoactivation process are reported and used to develop a model for the stepwise photo-assembly process; (5) a comparative analysis is given of data in the literature on the kinetics of substrate water exchange and peroxide binding/dismutation which support a mechanistic model for water oxidation in general; (6) we discuss alternative interpretations of data in the literature with a view to forecast new avenues where progress is needed.
Collapse
Affiliation(s)
- G M Ananyev
- Princeton University Department of Chemistry, Hoyt Laboratory, Princeton, NJ 09544, USA
| | | | | | | |
Collapse
|