skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Manganese–Cobalt Oxido Cubanes Relevant to Manganese-Doped Water Oxidation Catalysts

Abstract

Incorporation of Mn into an established water oxidation catalyst based on a Co(III)4O4 cubane was achieved by a simple and efficient assembly of permanganate, cobalt(II) acetate, and pyridine to form the cubane oxo cluster MnCo3O4(OAc)5py3 (OAc = acetate, py = pyridine) (1-OAc) in good yield. This allows characterization of electronic and chemical properties for a manganese center in a cobalt oxide environment, and provides a molecular model for Mn-doped cobalt oxides. The electronic properties of the cubane are readily tuned by exchange of the OAc- ligand for Cl- (1-Cl), NO3- (1-NO3), and pyridine ([1-py]+). EPR spectroscopy, SQUID magnetometry, and DFT calculations thoroughly characterized the valence assignment of the cubane as [MnIVCoIII3]. These cubanes are redox-active, and calculations reveal that the Co ions behave as the reservoir for electrons, but their redox potentials are tuned by the choice of ligand at Mn. This MnCo3O4 cubane system represents a new class of easily prepared, versatile, and redox-active oxido clusters that should contribute to an understanding of mixed-metal, Mn-containing oxides.

Authors:
ORCiD logo [1];  [2];  [1];  [2]; ORCiD logo [1]; ORCiD logo [1];  [2];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
  2. Univ. of California, Davis, CA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF); National Institutes of Health (NIH)
OSTI Identifier:
1469819
Grant/Contract Number:  
AC02-05CH11231; FG02-11ER16282; S10-RR027172
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 139; Journal Issue: 15; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Nguyen, Andy I., Suess, Daniel L. M., Darago, Lucy E., Oyala, Paul H., Levine, Daniel S., Ziegler, Micah S., Britt, R. David, and Tilley, T. Don. Manganese–Cobalt Oxido Cubanes Relevant to Manganese-Doped Water Oxidation Catalysts. United States: N. p., 2017. Web. doi:10.1021/jacs.7b01792.
Nguyen, Andy I., Suess, Daniel L. M., Darago, Lucy E., Oyala, Paul H., Levine, Daniel S., Ziegler, Micah S., Britt, R. David, & Tilley, T. Don. Manganese–Cobalt Oxido Cubanes Relevant to Manganese-Doped Water Oxidation Catalysts. United States. https://doi.org/10.1021/jacs.7b01792
Nguyen, Andy I., Suess, Daniel L. M., Darago, Lucy E., Oyala, Paul H., Levine, Daniel S., Ziegler, Micah S., Britt, R. David, and Tilley, T. Don. 2017. "Manganese–Cobalt Oxido Cubanes Relevant to Manganese-Doped Water Oxidation Catalysts". United States. https://doi.org/10.1021/jacs.7b01792. https://www.osti.gov/servlets/purl/1469819.
@article{osti_1469819,
title = {Manganese–Cobalt Oxido Cubanes Relevant to Manganese-Doped Water Oxidation Catalysts},
author = {Nguyen, Andy I. and Suess, Daniel L. M. and Darago, Lucy E. and Oyala, Paul H. and Levine, Daniel S. and Ziegler, Micah S. and Britt, R. David and Tilley, T. Don},
abstractNote = {Incorporation of Mn into an established water oxidation catalyst based on a Co(III)4O4 cubane was achieved by a simple and efficient assembly of permanganate, cobalt(II) acetate, and pyridine to form the cubane oxo cluster MnCo3O4(OAc)5py3 (OAc = acetate, py = pyridine) (1-OAc) in good yield. This allows characterization of electronic and chemical properties for a manganese center in a cobalt oxide environment, and provides a molecular model for Mn-doped cobalt oxides. The electronic properties of the cubane are readily tuned by exchange of the OAc- ligand for Cl- (1-Cl), NO3- (1-NO3), and pyridine ([1-py]+). EPR spectroscopy, SQUID magnetometry, and DFT calculations thoroughly characterized the valence assignment of the cubane as [MnIVCoIII3]. These cubanes are redox-active, and calculations reveal that the Co ions behave as the reservoir for electrons, but their redox potentials are tuned by the choice of ligand at Mn. This MnCo3O4 cubane system represents a new class of easily prepared, versatile, and redox-active oxido clusters that should contribute to an understanding of mixed-metal, Mn-containing oxides.},
doi = {10.1021/jacs.7b01792},
url = {https://www.osti.gov/biblio/1469819}, journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 15,
volume = 139,
place = {United States},
year = {Tue Mar 28 00:00:00 EDT 2017},
month = {Tue Mar 28 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Comparison of models for cobalt oxyhydroxide and manganese-doped-cobalt oxyhydroxide.

Save / Share:

Works referenced in this record:

Powering the planet: Chemical challenges in solar energy utilization
journal, October 2006


Cobalt–Iron (Oxy)hydroxide Oxygen Evolution Electrocatalysts: The Role of Structure and Composition on Activity, Stability, and Mechanism
journal, March 2015


Nickel–Iron Oxyhydroxide Oxygen-Evolution Electrocatalysts: The Role of Intentional and Incidental Iron Incorporation
journal, April 2014


Ultrathin Cobalt–Manganese Layered Double Hydroxide Is an Efficient Oxygen Evolution Catalyst
journal, November 2014


Efficient Water Oxidation Using CoMnP Nanoparticles
journal, March 2016


Crystal structure of oxygen-evolving photosystem II at a resolution of 1.9 Å
journal, April 2011


Three-dimensional structure of the plant photosystem II reaction centre at 8 Å resolution
journal, November 1998


A Synthetic Model of the Mn3Ca Subsite of the Oxygen-Evolving Complex in Photosystem II
journal, August 2011


Reduction potentials of heterometallic manganese-oxido cubane complexes modulated by redox-inactive metals
journal, June 2013


Mechanistic Investigations of Water Oxidation by a Molecular Cobalt Oxide Analogue: Evidence for a Highly Oxidized Intermediate and Exclusive Terminal Oxo Participation
journal, September 2015


Electronic Structure Description of a [Co(III) 3 Co(IV)O 4 ] Cluster: A Model for the Paramagnetic Intermediate in Cobalt-Catalyzed Water Oxidation
journal, October 2011


Synthetic model of the asymmetric [Mn3CaO4] cubane core of the oxygen-evolving complex of photosystem II
journal, January 2012


A synthetic Mn4Ca-cluster mimicking the oxygen-evolving center of photosynthesis
journal, May 2015


Water Oxidation by the [Co 4 O 4 (OAc) 4 (py) 4 ] + Cubium is Initiated by OH Addition
journal, December 2015


Preparation, structure, and magnetic properties of a dodecanuclear mixed-valence manganese carboxylate
journal, September 1980


Synthesis, Structure, Spectral and Electrochemical Properties, and Catalytic Use of Cobalt(III)−Oxo Cubane Clusters
journal, October 2007


Oxygen Atom Transfer and Oxidative Water Incorporation in Cuboidal Mn 3 MO n Complexes Based on Synthetic, Isotopic Labeling, and Computational Studies
journal, January 2013


Role of oxido incorporation and ligand lability in expanding redox accessibility of structurally related Mn4 clusters
journal, January 2013


Insight on Tafel slopes from a microkinetic analysis of aqueous electrocatalysis for energy conversion
journal, September 2015


Trinucleating Copper: Synthesis and Magnetostructural Characterization of Complexes Supported by a Hexapyridyl 1,3,5-Triarylbenzene Ligand
journal, January 2011


Water Oxidation Catalysis by Co(II) Impurities in Co(III) 4 O 4 Cubanes
journal, December 2014


Equilibrium acidities in dimethyl sulfoxide solution
journal, December 1988


55Mn ESE-ENDOR of a Mixed Valence Mn(III)Mn(IV) Complex: Comparison with the Mn Cluster of the Photosynthetic Oxygen-Evolving Complex
journal, November 1995


Determination and prediction of the magnetic anisotropy of Mn ions
journal, January 2016


Pulsed ELDOR detected NMR
journal, July 1994


LOBA: a localized orbital bonding analysis to calculate oxidation states, with application to a model water oxidation catalyst
journal, January 2009


Nucleophilic Attack of Hydroxide on a Mn V Oxo Complex: A Model of the O−O Bond Formation in the Oxygen Evolving Complex of Photosystem II
journal, July 2009


Electronic Design Criteria for O−O Bond Formation via Metal−Oxo Complexes
journal, March 2008


Nitric Oxide Activation by Distal Redox Modulation in Tetranuclear Iron Nitrosyl Complexes
journal, November 2015