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Title: Revealing the Influence of Diverse Secondary Metal Cations on Redox-Active Palladium Complexes

Journal Article · · Chemistry - A European Journal

Abstract Incorporation of redox‐inactive metals into redox‐active complexes and catalysts attracts attention for engendering new reactivity modes, but this strategy has not been extensively investigated beyond the first‐row of the transition metals. Here, the isolation and characterization of the first series of heterobimetallic complexes of palladium with mono‐, di‐, and tri‐valent redox‐inactive metal ions are reported. A Reinhoudt‐type heteroditopic ligand with a salen‐derived [ N 2 , O 2 ] binding site for Pd and a crown‐ether‐derived [ O 6 ] site has been used to prepare isolable adducts of the Lewis acidic redox‐inactive metal ions ( M n+ ). Comprehensive data from single‐crystal X‐ray diffraction analysis reveal distinctive trends in the structural properties of the heterobimetallic species, including an uncommon dependence of the Pd⋅⋅⋅ M distance on Lewis acidity. The reorganization energy associated with reduction of the heterobimetallic species is strongly modulated by Lewis acidity, with the slowest heterogeneous electron transfer kinetics associated with the strongest incorporated Lewis acids. This hitherto unexplored reorganization energy penalty for electron transfer contrasts with prior thermodynamic studies, revealing that kinetic parameters should be considered in studies of reactivity involving heterobimetallic species.

Research Organization:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE
Grant/Contract Number:
SC0019169
OSTI ID:
1976301
Alternate ID(s):
OSTI ID: 1869743
Journal Information:
Chemistry - A European Journal, Vol. 28, Issue 38; ISSN 0947-6539
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (71)

Reduction potentials of heterometallic manganese-oxido cubane complexes modulated by redox-inactive metals journal June 2013
Controlled Synthesis of 3d–4d Heterobimetallic Complexes of a Symmetrical Tetraiminodiphenolate Macrocycle – Structural, Spectroscopic, and Redox Properties journal October 2006
Cocomplexation of neutral guests and electrophilic metal cations in synthetic macrocyclic hosts journal July 1988
Electron transfers in chemistry and biology journal August 1985
Quantifying Variations in Metal–Ligand Cooperative Binding Strength with Cyclic Voltammetry and Redox-Active Ligands journal January 2022
When Do Strongly Coupled Diradicals Show Strongly Coupled Reactivity? Thermodynamics and Kinetics of Hydrogen Atom Transfer Reactions of Palladium and Platinum Bis(iminosemiquinone) Complexes journal March 2018
Pentavalent uranyl complexes journal August 2009
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal September 1976
Relative Hydride, Proton, and Hydrogen Atom Transfer Abilities of [HM(diphosphine) 2 ]PF 6 Complexes (M = Pt, Ni) journal December 1999
Water-Splitting Chemistry of Photosystem II journal November 2006
Standard Potentials in Aqueous Solution book January 2017
Redox-Inactive Metal Cations Modulate the Reduction Potential of the Uranyl Ion in Macrocyclic Complexes journal January 2020
The challenge of cyclic and acyclic schiff bases and related derivatives journal October 2004
Synthesis and redox properties of heterobimetallic Re(bpyCrown-M)(CO)3Cl complexes, where M = Na+, K+, Ca2+, and Ba2+ journal November 2021
Promotion and Tuning of the Electrochemical Reduction of Hetero‐ and Homobimetallic Zinc Complexes** journal June 2021
Structural, spectral, electrochemical and catalytic reactivity studies of a series of N2O2 chelated palladium(II) complexes journal May 2012
Activation of CO 2 by a Heterobimetallic Zr/Co Complex journal September 2011
Syntheses and Electronic Structures of One-Electron-Oxidized Group 10 Metal(II)−(Disalicylidene)diamine Complexes (Metal = Ni, Pd, Pt) journal March 2007
Enhancing electrocatalytic hydrogen evolution by nickel salicylaldimine complexes with alkali metal cations in aqueous media journal January 2016
Electronic Consequences of Ligand Substitution at Heterometal Centers in Polyoxovanadium Clusters: Controlling the Redox Properties through Heterometal Coordination Number journal June 2020
On the Use of Aqueous Metal-Aqua p K a Values as a Descriptor of Lewis Acidity journal January 2021
Co(III)/Alkali-Metal(I) Heterodinuclear Catalysts for the Ring-Opening Copolymerization of CO 2 and Propylene Oxide journal October 2020
Lewis acid assisted permanganate oxidations journal December 2002
Synthesis and Characterization of Ruthenium Bis(β-diketonato) Pyridine-Imidazole Complexes for Hydrogen Atom Transfer journal December 2007
Visible Light Driven Hydrogen Evolution by Molecular Nickel Catalysts with Time-Resolved Spectroscopic and DFT Insights journal January 2019
Theory and Application of Cyclic Voltammetry for Measurement of Electrode Reaction Kinetics. journal October 1965
Structural, Luminescent and Thermal Properties of Heteronuclear PdII–LnIII–PdII Complexes of Hexadentate N2O4 Schiff Base Ligand journal September 2018
Highly efficient palladium-catalysed carbon dioxide hydrosilylation employing PMP ligands journal January 2019
Asymmetric compartmental macrocyclic ligands and related mononuclear and hetero-dinuclear complexes with d- and/or f-metal ions journal October 1999
Revised values of effective ionic radii journal July 1970
Redox-inactive metal ions modulate the reactivity and oxygen release of mononuclear non-haem iron(III)–peroxo complexes journal September 2014
Elements of Molecular and Biomolecular Electrochemistry: An Electrochemical Approach to Electron Transfer Chemistry journal June 2019
Threading-Followed-by-Shrinking Protocol for the Synthesis of a [2]Rotaxane Incorporating a Pd(II)−Salophen Moiety journal December 2004
Electrochemical behaviour of acyclic and macrocyclic complexes of nickel(II), copper(II) and uranyl(VI) journal July 1986
Oxidation of alkanes by barium ruthenate in acetic acid: catalysis by Lewis acids journal January 1993
The Effects of Redox-Inactive Metal Ions on the Activation of Dioxygen: Isolation and Characterization of a Heterobimetallic Complex Containing a Mn III –(μ-OH)–Ca II Core journal June 2011
Synthesis, Structure, and Catalysis of Palladium Complexes Bearing a Group 13 Metalloligand: Remarkable Effect of an Aluminum-Metalloligand in Hydrosilylation of CO 2 journal April 2017
Elaboration on the Electronics of Salen Manganese Nitrides: Investigations into Alkoxy-Substituted Ligand Scaffolds journal November 2021
Mn 4 Ca Cluster in Photosynthesis: Where and How Water is Oxidized to Dioxygen journal March 2014
Influence of the chelate effect on the electronic structure of one-electron oxidized group 10 metal(ii)-(disalicylidene)diamine complexes journal January 2011
A Synthetic Model of the Mn3Ca Subsite of the Oxygen-Evolving Complex in Photosystem II journal August 2011
Formation pathway of a Mn(IV),Mn(IV) bis(μ-oxo) dimer that incorporates alkali and alkaline earth cations and electron transfer properties of the dimer journal November 1999
Silylation of the Uranyl Ion Using B(C 6 F 5 ) 3 -Activated Et 3 SiH journal October 2011
Synthesis and electrochemical properties of oxo-bridged manganese dimers incorporating alkali and alkaline earth cations journal October 1994
Synthetic Cluster Models of Biological and Heterogeneous Manganese Catalysts for O 2 Evolution journal December 2013
Lewis acid-activated oxidation of alcohols by permanganate journal January 2011
Redox Potential and Electronic Structure Effects of Proximal Nonredox Active Cations in Cobalt Schiff Base Complexes journal February 2017
A semiclassical treatment of electron-exchange reactions. Application to the hexaaquoiron(II)-hexaaquoiron(III) system journal August 1980
Electrochemical formation and reactivity of a manganese peroxo complex: acid driven H2O2 generation vs. O–O bond cleavage journal January 2014
Reduction and selective oxo group silylation of the uranyl dication journal January 2008
Heterodinuclear Zn(II), Mg(II) or Co(III) with Na(I) Catalysts for Carbon Dioxide and Cyclohexene Oxide Ring Opening Copolymerizations journal July 2021
Oxo ligand functionalization in the uranyl ion (UO22+) journal February 2010
Assembly and Properties of Heterobimetallic Co II/III /Ca II Complexes with Aquo and Hydroxo Ligands journal October 2012
Recent advances in cooperative bimetallic asymmetric catalysis: dinuclear Schiff base complexes journal January 2014
Efficient Catalytic Oxidation of Alkanes by Lewis Acid/[Os VI (N)Cl 4 ] Using Peroxides as Terminal Oxidants. Evidence for a Metal-Based Active Intermediate journal August 2008
Structural variation in copper( i ) complexes with pyridylmethylamide ligands: structural analysis with a new four-coordinate geometry index, τ 4 journal January 2007
Trivalent Lewis Acidic Cations Govern the Electronic Properties and Stability of Heterobimetallic Complexes of Nickel journal November 2017
Efficient Bimetallic Catalysis of Nitrile Hydration to Amides with a Simple Pd(OAc) 2 /Lewis Acid Catalyst at Ambient Temperature: Efficient Bimetallic Catalysis of Nitrile Hydration to Amides with a Simple Pd(OAc) 2 /Lewis Acid Catalyst at Ambient Temperature journal April 2017
Metallomacrocycles: synthesis, x-ray structure, electrochemistry, and ESR spectroscopy of mononuclear and heterodinuclear complexes journal March 1989
Cation-Modulated Reactivity of Iridium Hydride Pincer-Crown Ether Complexes journal October 2014
Pd–Ln and Pt–Ln complexes of a bi-compartmental ligand: [MLn(L)(NO 3 ) 3 ] (M = Pd, Pt; Ln = Eu, Tb; H 2 L =  N , N ′-bis(3-methoxysalicylidenimino-1,3-diaminopropane)) journal April 2018
Synthesis and characterisation of macrocyclic palladium( ii )–sodium( i ) complexes: generation of an unusual metal-mediated electron delocalisation journal January 2004
Dalton communications. Lewis-acid catalysed oxidation of alkanes by chromate and permanganate journal January 1995
Electron-Transfer Reorganization Energies of Isolated Organic Molecules journal April 2002
Controlling ligand binding for tunable and switchable catalysis: cation-modulated hemilability in pincer-crown ether ligands journal January 2017
Multimetallic Schiff Base Complexes as Cooperative Asymmetric Catalysts journal January 2013
Polydentate ligand exchange via formation of a dimetallic complex. Crystal structures of [(thf)Fe(acen)MCl 2 ](M = Fe or Zn), [ClFe(salphen)FeCl(thf) 2 ], [Ti(acen)(thf) 2 ][CoCl 3 (thf)], and [Ti(acen)(thf) 2 ] 2 [Fe 3 Cl 8 (thf) 2 ][acen =N,N′-ethylenebis(acetylacetoneiminate), salphen =N,N′-o-phenylenebis(salicylideneiminate), and thf = tetrahydrofuran] journal January 1990
Inhibiting the Hydrogen Evolution Reaction (HER) with Proximal Cations: A Strategy for Promoting Selective Electrocatalytic Reduction journal June 2021
Dramatic Effect of Lewis Acids on the Rhodium-Catalyzed Hydroboration of Olefins journal December 2009
CXIX.—The formation and stability of spiro-compounds. Part I. spiro-Compounds from cyclohexane journal January 1915
Original Transition Metal→Indium Interactions upon Coordination of a Triphosphine−Indane journal February 2011


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