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Khor CK, Calhoun LA, Neville JJ, Dyker CA. Experimental and Theoretical Predictors for Redox Potentials of Bispyridinylidene Electron Donors. Chemphyschem 2024; 25:e202400092. [PMID: 38743866 DOI: 10.1002/cphc.202400092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/16/2024]
Abstract
Bispyridinylidenes are neutral organic molecules capable of two-electron oxidation at a range of redox potentials that are widely tunable by choice of substituent, making them attractive as homogeneous organic reductants and active materials in redox flow batteries. In an effort to readily predict the redox potentials of this important class of compounds, we have developed correlations between the experimental redox potentials and both experimental and theoretical predictors. On the experimental side, we show that multinuclear NMR chemical shifts of related pyridinium ions correlate well with the redox potentials of bispyridinylidenes, with R2 and standard errors (S) reaching 0.9810 and 0.048 V, respectively, when the 13C (N-CH3) and 1H (ortho) chemical shifts are used together. Theoretical studies of the bispyridinylidenes and their doubly oxidized bipyridinium ions gave a range of predictively valuable equations at various levels of computational cost. This ranged from a simple model using only the EHOMO of the bispyridinylidenes (R2=0.9689; S=0.060 V), to a more computationally intensive model which include solvation effects for both redox states which gave the highest predictive value for all methods (R2=0.9958; S=0.022 V). This work will guide further studies of this important class of molecules.
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Affiliation(s)
- Chun Keat Khor
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada, E3B 5 A3
| | - Larry A Calhoun
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada, E3B 5 A3
| | - John J Neville
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada, E3B 5 A3
| | - C Adam Dyker
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada, E3B 5 A3
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Brancatelli G, Dalcanale E, Pinalli R, Geremia S. Probing the Structural Determinants of Amino Acid Recognition: X-Ray Studies of Crystalline Ditopic Host-Guest Complexes of the Positively Charged Amino Acids, Arg, Lys, and His with a Cavitand Molecule. Molecules 2018; 23:molecules23123368. [PMID: 30572602 PMCID: PMC6321202 DOI: 10.3390/molecules23123368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
Crystallization of tetraphosphonate cavitand Tiiii[H, CH3, CH3] in the presence of positively charged amino acids, namely arginine, lysine, or histidine, afforded host-guest complex structures. The X-ray structure determination revealed that in all three structures, the fully protonated form of the amino acid is ditopically complexed by two tetraphosphonate cavitand molecules. Guanidinium, ammonium, and imidazolium cationic groups of the amino acid side chain are hosted in the cavity of a phosphonate receptor, and are held in place by specific hydrogen bonding interactions with the P=O groups of the cavitand molecule. In all three structures, the positively charged α-ammonium groups form H-bonds with the P=O groups, and with a water molecule hosted in the cavity of a second tetraphosphonate molecule. Furthermore, water-assisted dimerization was observed for the cavitand/histidine ditopic complex. In this 4:2 supramolecular complex, a bridged water molecule is held by two carboxylic acid groups of the dimerized amino acid. The structural information obtained on the geometrical constrains necessary for the possible encapsulation of the amino acids are important for the rational design of devices for analytical and medical applications.
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Affiliation(s)
- Giovanna Brancatelli
- Centre of Excellence in Biocrystallography, Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Enrico Dalcanale
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, and INSTM, UdR Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Roberta Pinalli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, and INSTM, UdR Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Silvano Geremia
- Centre of Excellence in Biocrystallography, Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
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Govindarajan R, Nagarajaprakash R, Veena V, Sakthivel N, Manimaran B. One-pot reaction of amide functionalized Re(I) based dinuclear metallacycles: Synthesis, characterization and evaluation for anticancer potential. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.10.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lee MM, Lin J, Chang C, Hung C, Chen C, Hsu C, Sun S. Synthesis, Electrochemical and Photophysical Properties of 2,4,6‐Tripyridyl‐1,3,5‐Triazine‐Bridged Trinuclear Diimine Rhenium(I) Tricarbonyl Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mandy M. Lee
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Ju‐Ling Lin
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Che‐Wei Chang
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Chen‐Yen Hung
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Chih‐Wei Chen
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Chao‐Ping Hsu
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
| | - Shih‐Sheng Sun
- Institute of Chemistry Academia Sinica 11529 Taipei Taiwan, Republic of China
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Thorp-Greenwood FL, Pritchard VE, Coogan MP, Hardie MJ. Tris(rhenium fac-tricarbonyl) Polypyridine Functionalized Cyclotriguaiacylene Ligands with Rich and Varied Emission. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00099] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Victoria E. Pritchard
- School
of Chemistry, University of Leeds, Leeds, West Yorkshire LS2 9JT, United Kingdom
| | - Michael P. Coogan
- Department
of Chemistry, Lancaster University, Bailrigg, Lancaster LA1
4YB, United Kingdom
| | - Michaele J. Hardie
- School
of Chemistry, University of Leeds, Leeds, West Yorkshire LS2 9JT, United Kingdom
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6
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Motloch P, Hunter C. Thermodynamic Effective Molarities for Supramolecular Complexes. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2016. [DOI: 10.1016/bs.apoc.2016.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Pinalli R, Dalcanale E, Ugozzoli F, Massera C. Resorcinarene-based cavitands as building blocks for crystal engineering. CrystEngComm 2016. [DOI: 10.1039/c6ce01010e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Yue Y, Huo F, Yin C, Chao J, Yongbin Zhang YZ, Wei X. An ICT based ultraselective and sensitive fluorescent probe for detection of HClO in living cells. RSC Adv 2015. [DOI: 10.1039/c5ra16097a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An ICT based ultraselective and sensitive probe for colorimetric and fluorescent detection of HClOviaoxidative cleavage of an alkene linker to epoxide and then to aldehydes was developed through the conjugation of pyridinium with vanilline.
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Affiliation(s)
- Yongkang Yue
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- China
| | - Fangjun Huo
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- China
| | - Caixia Yin
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- China
| | - Jianbin Chao
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- China
| | | | - Xing Wei
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- China
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Brancatelli G, Gattuso G, Geremia S, Manganaro N, Notti A, Pappalardo S, Parisi MF, Pisagatti I. α,ω-Alkanediyldiammonium dications sealed within calix[5]arene capsules with a hydrophobic bayonet-mount fastening. CrystEngComm 2015. [DOI: 10.1039/c5ce01558h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Brancatelli G, Gattuso G, Geremia S, Notti A, Pappalardo S, Parisi MF, Pisagatti I. Probing the inner space of salt-bridged calix[5]arene capsules. Org Lett 2014; 16:2354-7. [PMID: 24725016 DOI: 10.1021/ol500673n] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A combined DOSY and XRD study indicates that a carboxylcalix[5]arene receptor is able to encapsulate α,ω-diamines of appropriate length by means of a proton-transfer-mediated recognition process followed by salt-bridge-assisted bis-endo-complexation.
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Affiliation(s)
- Giovanna Brancatelli
- Centro di Eccellenza in Biocristallografia, Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste , via L. Giorgieri 1, 34127 Trieste, Italy
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11
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Brancatelli G, Capici C, Gattuso G, Geremia S, Notti A, Pappalardo S, Parisi MF, Sortino S, Vittorino E. Reversible Molecular Motion of a Bis-calix[5]arene Host Driven by a Photoresponsive Guest. Chem Asian J 2011; 7:50-4. [DOI: 10.1002/asia.201100738] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Indexed: 12/20/2022]
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12
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Pinalli R, Boccini F, Dalcanale E. Cavitand-Based Coordination Cages: Achievements and Current Challenges. Isr J Chem 2011. [DOI: 10.1002/ijch.201100057] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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