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Contaldo U, Curtil M, Pérard J, Cavazza C, Le Goff A. A Pyrene-Triazacyclononane Anchor Affords High Operational Stability for CO 2 RR by a CNT-Supported Histidine-Tagged CODH. Angew Chem Int Ed Engl 2022; 61:e202117212. [PMID: 35274429 PMCID: PMC9401053 DOI: 10.1002/anie.202117212] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Indexed: 11/10/2022]
Abstract
An original 1‐acetato‐4‐(1‐pyrenyl)‐1,4,7‐triazacyclononane (AcPyTACN) was synthesized for the immobilization of a His‐tagged recombinant CODH from Rhodospirillum rubrum (RrCODH) on carbon‐nanotube electrodes. The strong binding of the enzyme at the Ni‐AcPyTACN complex affords a high current density of 4.9 mA cm−2 towards electroenzymatic CO2 reduction and a high stability of more than 6×106 TON when integrated on a gas‐diffusion bioelectrode.
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Affiliation(s)
- Umberto Contaldo
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France.,Univ. Grenoble Alpes, CEA, CNRS, IRIG, CBM, 38000, Grenoble, France
| | - Mathieu Curtil
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
| | - Julien Pérard
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, CBM, 38000, Grenoble, France
| | | | - Alan Le Goff
- Univ. Grenoble Alpes, CNRS, DCM, 38000, Grenoble, France
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2
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contaldo U, curtil M, perard J, cavazza C, Le Goff A. A pyrene‐triazacyclononane anchor affords high operational stability for CO2RR by a CNT‐supported histidine‐tagged CODH. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- umberto contaldo
- CEA BIG: Commissariat a l'energie atomique et aux energies alternatives lnstitut de Recherche Interdisciplinaire de Grenoble lcbm FRANCE
| | - mathieu curtil
- Université Grenoble Alpes: Universite Grenoble Alpes DCM FRANCE
| | - Julien perard
- CEA lRlG: Commissariat a l'energie atomique et aux energies alternatives lnstitut de Recherche Interdisciplinaire de Grenoble lcbm FRANCE
| | - christine cavazza
- CEA BIG: Commissariat a l'energie atomique et aux energies alternatives lnstitut de Recherche Interdisciplinaire de Grenoble LCBM FRANCE
| | - Alan Le Goff
- Universite Grenoble Alpes/CNRS Département de Chimie Moléculaire 570 rue de la chimie 38041 Grenoble FRANCE
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3
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Joshi M, Ghanty TK. Prediction of a Nine−Membered Aromatic Heterocyclic 1,4,7−triazacyclononatetraenyl anion and its Sandwich Complexes with Divalent Lanthanides. ChemistrySelect 2019. [DOI: 10.1002/slct.201901953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Meenakshi Joshi
- Theoretical Chemistry SectionChemistry Group, Bhabha Atomic Research Centre Mumbai 400085 India
- Homi Bhabha National InstituteTraining School Complex, Anushakti Nagar Mumbai– 400094 India
| | - Tapan K. Ghanty
- Theoretical Chemistry SectionChemistry Group, Bhabha Atomic Research Centre Mumbai 400085 India
- Homi Bhabha National InstituteTraining School Complex, Anushakti Nagar Mumbai– 400094 India
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4
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Banerjee A, Tolla AS, Stjepanovic S, Sevilla MD, Goodsell JL, Angerhofer A, Brennessel WW, Loloee R, Chavez FA. Structural, Spectroscopic, Electrochemical, and Magnetic Properties for Manganese(II) Triazamacrocyclic Complexes. Inorganica Chim Acta 2019; 486:546-555. [PMID: 33981118 PMCID: PMC8112617 DOI: 10.1016/j.ica.2018.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report the synthesis of [Mn(tacud)2](OTf)2 (1) (tacud = 1,4,8-triazacycloundecane), [Mn(tacd)2](OTf)2 (2) (tacd = 1,4,7-triazacyclodecane), and [Mn(tacn)2](OTf)2 (3) (tacn = 1,4,7-triazacyclononane). Electrochemical measurements on the MnIII/II redox couple show that complex 1 has the largest anodic potential of the set (E 1/2 = 1.16 V vs NHE, ΔE p = 106 mV) compared to 2 (E 1/2 = 0.95 V, ΔE p = 108 mV) and 3 (E 1/2 = 0.93 V, ΔE p = 96 mV). This is due to the fact that 1 has the fewest 5-membered chelate rings and thus is least stabilized. Magnetic studies of 1-3 revealed that all complexes remain high spin throughout the temperature range investigated (2 - 300 K). X-band EPR investigations in methanol glass indicated that the manganese(II) centers for 2 and 3 resided in a more distorted octahedral geometric configuration compared to 1. To ease spectral interpretation and extract ZFS parameters, we performed high-frequency high-field EPR (HFEPR) at frequencies above 200 GHz and a field of 7.5 T. Simulation of the spectral data yielded g = 2.0013 and D = -0.031 cm-1 for 1, g = 2.0008, D = -0.0824 cm-1, |E/D| = 0.12 for 2, and g = 2.00028, D = -0.0884 cm-1 for 3. These results are consistent with 3 possessing the most distorted geometry. Calculations (PBE0/6-31G(d)) were performed on 1-3. Results show that 1 has the largest HOMO-LUMO gap energy (6.37 eV) compared to 2 (6.12 eV) and 3 (6.26 eV). Complex 1 also has the lowest HOMO energies indicating higher stability.
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Affiliation(s)
- Atanu Banerjee
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | - Azam S Tolla
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | | | - Michael D Sevilla
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | - Justin L Goodsell
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | | | | | - Reza Loloee
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1322, USA
| | - Ferman A Chavez
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
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5
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Zeng Z, Belousoff MJ, Spiccia L, Bond AM, Torriero AAJ. Macrocycles Bearing Ferrocenyl Pendants and their Electrochemical Properties upon Binding to Divalent Transition Metal Cations. Chempluschem 2018; 83:728-738. [PMID: 31950627 DOI: 10.1002/cplu.201700550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/15/2018] [Indexed: 01/09/2023]
Abstract
Metal complexes of Cu2+ , Co2+ , Cd2+ , Zn2+ , and Ni2+ formed with the ligands [Fc(cyclen)] (1) and [Fc(cyclen)2 ] (2) (Fc=ferrocene, cyclen=1,4,7,10-tetraazacyclododecane) are synthesised and characterised. The X-ray structure of the Cu2+ complex of 2, Fc([Cu(cyclen)(CH3 CN)]2 (ClO4 )4 , is reported, and shows that the two positively charged Cu2+ -cyclen units have a coordination number of five, adopting a distorted trigonal-bipyramidal configuration. The Cu2+ -cyclen units are arranged in a trans-like configuration with respect to the Fc group, presumably to minimise electrostatic repulsion. The voltammetric oxidation of the free ligands 1 and 2 in a CH2 Cl2 /CH3 CN (1:4) solvent mixture yields two closely spaced oxidation processes. Both electron-transfer steps are associated with the ferrocenyl moiety, implying strong communication between the cyclen nitrogen atoms and the ferrocenyl group. In contrast, cyclic voltammograms display only a simple reversible one-electron process if 1 and 2 are complexed with Cd2+ , Cu2+ , Zn2+ , Ni2+ , or Co2+ . Binding of these metal ions produces a significant shift in the reversible midpoint potential (Em ). Except for Ni2+ , Em is linearly proportional to the charge density of the transition metal ion, demonstrating that 1 and 2 may undergo redox switching. The diffusion coefficients of Fc, DmFc, 1 and 2, and their metal ion complexes correlate well with their molecular weights.
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Affiliation(s)
- Zhanghua Zeng
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | | | - Leone Spiccia
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Alan M Bond
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Angel A J Torriero
- School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia
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Le Fur M, Beyler M, Le Poul N, Lima LMP, Le Mest Y, Delgado R, Platas-Iglesias C, Patinec V, Tripier R. Improving the stability and inertness of Cu(ii) and Cu(i) complexes with methylthiazolyl ligands by tuning the macrocyclic structure. Dalton Trans 2016; 45:7406-20. [PMID: 27041505 DOI: 10.1039/c6dt00385k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A tacn based ligand bearing two methylthiazolyl arms (no2th) was synthesized with the aim to find ligands forming very stable and inert complexes with Cu(ii) and Cu(i) in aqueous medium for radiopharmaceutical applications. The no2th ligand was efficiently prepared following the orthoamide intermediate synthesis. The complexes with Cu(2+) and Zn(2+) were obtained and analyzed by X-ray diffraction. The [Cu(no2th)](2+) complex presents a pentacoordinated distorted square pyramidal coordination geometry, while the metal ion in [Zn(no2th)](2+) adopts a hexacoordinated distorted trigonal prismatic geometry involving the coordination of a perchlorate counter ion. The acid-base properties of no2th have been studied using potentiometric titrations, and the stability constants of Cu(2+) and Zn(2+) complexes were determined by potentiometric and UV-vis titrations using H4edta as a competitor ligand. The stability constant determined for the Cu(2+) complex is rather high (log KCuL = 20.77 and pCu = 17.15), and moreover no2th exhibits a high selectivity for copper(ii) in relation to zinc(ii). The kinetics of the copper(ii) complexation process is very fast even in acidic medium. In addition, the [Cu(no2th)](2+) complex was found to be inert under rather harsh conditions (up to 2 M HCl and 60 °C), displaying a very high half-life time of about 15 days in 2 M HCl at 90 °C. The electrochemical reduction of the copper(ii) complex in water leads to the reversible formation of a stable copper(i) species. Spectroscopic studies performed by NMR, UV-vis and EPR, assisted by theoretical calculations, show that the [Cu(no2th)](2+) complex presents a structure in solution similar to that observed in the solid state. When compared to its cyclam di-N-methylthiazolyl counterpart, the results reported in this paper unambiguously show that replacing the cyclam unit by a tacn moiety improves the stability and inertness of its Cu(ii) and Cu(i) complexes.
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Affiliation(s)
- Mariane Le Fur
- Université de Bretagne Occidentale, UMR-CNRS 6521, SFR ScInBioS, Faculté des Sciences et Techniques, 6 avenue Victor le Gorgeu, C.S. 93837, 29238 Brest Cedex 3, France.
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7
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A Practical Route for the Preparation of 1,4,7-Triazacyclononanyl Diacetates with a Hydroxypyridinonate Pendant Arm. Molecules 2015; 20:19393-405. [PMID: 26512638 PMCID: PMC6332087 DOI: 10.3390/molecules201019393] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/16/2015] [Accepted: 10/16/2015] [Indexed: 12/31/2022] Open
Abstract
The preparation of triazamacrocyclic hydroxypyridinonate (HOPO-TACN) derivatives as potential chelators for metals in biomedical applications was reported. The synthesis is based on a convergent synthetic approach, in which the key intermediate di-tert-butyl-2,2′-(1,4,7-triazonane-1,4-diyl) diacetate was coupled with a hydroxypyridinonate pendant arm. The method is suitable for rapid syntheses of metal chelator HOPO-TACNs of biomedical interest.
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Joshi T, Graham B, Spiccia L. Macrocyclic metal complexes for metalloenzyme mimicry and sensor development. Acc Chem Res 2015; 48:2366-79. [PMID: 26244894 DOI: 10.1021/acs.accounts.5b00142] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Examples of proteins that incorporate one or more metal ions within their structure are found within a broad range of classes, including oxidases, oxidoreductases, reductases, proteases, proton transport proteins, electron transfer/transport proteins, storage proteins, lyases, rusticyanins, metallochaperones, sporulation proteins, hydrolases, endopeptidases, luminescent proteins, iron transport proteins, oxygen storage/transport proteins, calcium binding proteins, and monooxygenases. The metal coordination environment therein is often generated from residues inherent to the protein, small exogenous molecules (e.g., aqua ligands) and/or macrocyclic porphyrin units found, for example, in hemoglobin, myoglobin, cytochrome C, cytochrome C oxidase, and vitamin B12. Thus, there continues to be considerable interest in employing macrocyclic metal complexes to construct low-molecular weight models for metallobiosites that mirror essential features of the coordination environment of a bound metal ion without inclusion of the surrounding protein framework. Herein, we review and appraise our research exploring the application of the metal complexes formed by two macrocyclic ligands, 1,4,7-triazacyclononane (tacn) and 1,4,7,10-tetraazacyclododecane (cyclen), and their derivatives in biological inorganic chemistry. Taking advantage of the kinetic inertness and thermodynamic stability of their metal complexes, these macrocyclic scaffolds have been employed in the development of models that aid the understanding of metal ion-binding natural systems, and complexes with potential applications in biomolecule sensing, diagnosis, and therapy. In particular, the focus has been on "coordinatively unsaturated" metal complexes that incorporate a kinetically inert and stable metal-ligand moiety, but which also contain one or more weakly bound ligands, allowing for the reversible binding of guest molecules via the formation and dissociation of coordinate bonds. With regards to mimicking metallobiosites, examples are presented from our work on tacn-based complexes developed as simplified structural models for multimetallic enzyme sites. In particular, structural comparisons are made between multinuclear copper(II) complexes formed by such ligands and multicopper enzymes featuring type-2 and type-3 copper centers, such as ascorbate oxidase (AO) and laccase (Lc). Likewise, with the aid of relevant examples, we highlight the importance of cooperativity between either multiple metal centers or a metal center and a proximal auxiliary unit appended to the macrocyclic ligand in achieving efficient phosphate ester cleavage. Finally, the critical importance of the Zn(II)-imido and Zn(II)-phosphate interactions in Zn-cyclen-based systems for delivering highly sensitive electrochemical and fluorescent chemosensors is also showcased. The Account additionally highlights some of the factors that limit the performance of these synthetic nucleases and the practical application of the biosensors, and then identifies some avenues for the development of more effective macrocyclic constructs in the future.
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Affiliation(s)
- Tanmaya Joshi
- School
of Chemistry, Monash University, Victoria 3800, Australia
| | - Bim Graham
- Monash
Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Leone Spiccia
- School
of Chemistry, Monash University, Victoria 3800, Australia
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Máté G, Šimeček J, Pniok M, Kertész I, Notni J, Wester HJ, Galuska L, Hermann P. The influence of the combination of carboxylate and phosphinate pendant arms in 1,4,7-triazacyclononane-based chelators on their 68Ga labelling properties. Molecules 2015. [PMID: 26197305 PMCID: PMC6331800 DOI: 10.3390/molecules200713112] [Citation(s) in RCA: 11] [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] [Indexed: 12/22/2022] Open
Abstract
In order to compare the coordination properties of 1,4,7-triazacyclononane (tacn) derivatives bearing varying numbers of phosphinic/carboxylic acid pendant groups towards 68Ga, 1,4,7-triazacyclononane-7-acetic-1,4-bis(methylenephosphinic) acid (NOPA) and 1,4,7- triazacyclononane-4,7-diacetic-1-[methylene(2-carboxyethyl)phosphinic] acid (NO2AP) were synthesized using Mannich reactions with trivalent or pentavalent forms of H-phosphinic acids as phosphorus components. Stepwise protonation constants logK1-3 12.06, 3.90 and 1.95, and stability constants with GaIII and CuII, logKGaL 24.01 and logKCuL 16.66, were potentiometrically determined for NOPA. Both ligands were labelled with 68Ga and compared with NOTA (tacn-N,N',N″-triacetic acid) and NOPO, a TRAP-type [tacn-N,N',N″- tris(methylenephosphinic acid)] chelator. At pH 3, NOPO and NOPA showed higher labelling efficiency (binding with lower ligand excess) at both room temperature and 95 °C, compared to NO2AP and NOTA. Labelling efficiency at pH = 0-3 correlated with a number of phosphinic acid pendants: NOPO >> NOPA > NO2AP >> NOTA; however, it was more apparent at 95 °C than at room temperature. By contrast, NOTA was found to be labelled more efficiently at pH > 4 compared to the ligands with phosphinic acids. Overall, replacement of a single phosphinate donor with a carboxylate does not challenge 68Ga labelling of TRAP-type chelators. However, the presence of carboxylates facilitates labelling at neutral or weakly acidic pH.
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Affiliation(s)
- Gábor Máté
- Department of Nuclear Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt 98, H-4032 Debrecen, Hungary; E-Mails: (G.M.); (I.K.); (L.G.)
| | - Jakub Šimeček
- Lehrstuhl für Pharmazeutische Radiochemie, Technische Universität München, Walther-Meissner-Strasse 3, D-85748 Garching, Germany; E-Mails: (J.Š.); (J.N.); (H.-J.W.)
| | - Miroslav Pniok
- Department of Inorganic Chemistry, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic; E-Mail:
| | - István Kertész
- Department of Nuclear Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt 98, H-4032 Debrecen, Hungary; E-Mails: (G.M.); (I.K.); (L.G.)
| | - Johannes Notni
- Lehrstuhl für Pharmazeutische Radiochemie, Technische Universität München, Walther-Meissner-Strasse 3, D-85748 Garching, Germany; E-Mails: (J.Š.); (J.N.); (H.-J.W.)
| | - Hans-Jürgen Wester
- Lehrstuhl für Pharmazeutische Radiochemie, Technische Universität München, Walther-Meissner-Strasse 3, D-85748 Garching, Germany; E-Mails: (J.Š.); (J.N.); (H.-J.W.)
| | - László Galuska
- Department of Nuclear Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt 98, H-4032 Debrecen, Hungary; E-Mails: (G.M.); (I.K.); (L.G.)
| | - Petr Hermann
- Department of Inorganic Chemistry, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420-221-951-263; Fax: +420-221-951-253
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Pawlak PL, Panda M, Li J, Banerjee A, Averill DJ, Nikolovski B, Shay BJ, Brennessel WW, Chavez FA. Oxalate Oxidase Model Studies - Substrate Reactivity. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201402835] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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11
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Wang J, Gondrand C, Touti F, Hasserodt J. A pair of highly biotolerated diamagnetic and paramagnetic iron(ii) complexes displaying electroneutrality. Dalton Trans 2015; 44:15391-5. [DOI: 10.1039/c5dt02192h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pair of structurally analogous macrocyclic iron(ii) complexes with a magnetic off-on relationship is reported that exhibit electroneutrality at neutral pH and high stability in physiological media.
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Affiliation(s)
- J. Wang
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
- School of Chemistry and Molecular Engineering
| | - C. Gondrand
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
| | - F. Touti
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
| | - J. Hasserodt
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
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Tolla AS, Banerjee A, Stjepanovic S, Li J, Brennessel WW, Loloee R, Chavez FA. Spin‐State Tuning in Iron(II) Triazamacrocyclic Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201371] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Azam S. Tolla
- Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
| | - Atanu Banerjee
- Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
| | - Slavica Stjepanovic
- Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
| | - Jia Li
- Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
| | | | - Reza Loloee
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824‐1322, USA
| | - Ferman A. Chavez
- Department of Chemistry, Oakland University, Rochester, MI 48309‐4477, USA, Fax: +1‐248‐370‐2321, http://https://files.oakland.edu/users/chavez/web/Research.htm
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Banerjee A, Panda M, Tolla AS, Li J, Brennessel WW, Loloee R, Chavez FA. Synthesis, Structure, and Characterization of [FeIIILCl3] (L = 1, 4, 8-Triazacycloundecane, 1, 4, 7-Triazacyclononane). Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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exo-Diastereoisomer of 10-aryl-1,4,7-triazabicyclo[5.2.1]decane as intermediary in specific derivatisation of triazacyclononane. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Pawlak PL, Panda M, Loloee R, Kucera BE, Costes JP, Tuchagues JP, Chavez FA. New binuclear MnII and FeII complexes supported by 1,4,8-triazacycloundecane. Dalton Trans 2011; 40:2926-31. [DOI: 10.1039/c0dt01379j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Zeng Z, Torriero AAJ, Bond AM, Spiccia L. Fluorescent and electrochemical sensing of polyphosphate nucleotides by ferrocene functionalised with two Zn(II)(TACN)(pyrene) complexes. Chemistry 2010; 16:9154-63. [PMID: 20623565 DOI: 10.1002/chem.201000882] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The [Fc-bis{Zn(II)(TACN)(Py)}] complex, comprising two Zn(II)(TACN) ligands (Fc=ferrocene; Py=pyrene; TACN=1,4,7-triazacyclononane) bearing fluorescent pyrene chromophores linked by an electrochemically active ferrocene molecule has been synthesised in high yield through a multistep procedure. In the absence of the polyphosphate guest molecules, very weak excimer emission was observed, indicating that the two pyrene-bearing Zn(II)(TACN) units are arranged in a trans-like configuration with respect to the ferrocene bridging unit. Binding of a variety of polyphosphate anionic guests (PPi and nucleotides di- and triphosphate) promotes the interaction between pyrene units and results in an enhancement in excimer emission. Investigations of phosphate binding by (31)P NMR spectroscopy, fluorescence and electrochemical techniques confirmed a 1:1 stoichiometry for the binding of PPi and nucleotide polyphosphate anions to the bis(Zn(II)(TACN)) moiety of [Fc-bis{Zn(II)(TACN)(Py)}] and indicated that binding induces a trans to cis configuration rearrangement of the bis(Zn(II)(TACN)) complexes that is responsible for the enhancement of the pyrene excimer emission. Pyrophosphate was concluded to have the strongest affinity to [Fc-bis{Zn(II)(TACN)(Py)}] among the anions tested based on a six-fold fluorescence enhancement and 0.1 V negative shift in the potential of the ferrocene/ferrocenium couple. The binding constant for a variety of polyphosphate anions was determined from the change in the intensity of pyrene excimer emission with polyphosphate concentration, measured at 475 nm in CH(3)CN/Tris-HCl (1:9) buffer solution (10.0 mM, pH 7.4). These measurements confirmed that pyrophosphate binds more strongly (K(b)=(4.45+/-0.41) x 10(6) M(-1)) than the other nucleotide di- and triphosphates (K(b)=1-50 x 10(5) M(-1)) tested.
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Affiliation(s)
- Zhanghua Zeng
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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Sobieściak TD, Zielenkiewicz P. Double Selective Synthetic Approach to the N-Functionalized 1,4,7-Triazacyclononane Derivatives: Chelating Compounds for Controllable Protein Orientation. J Org Chem 2010; 75:2069-72. [DOI: 10.1021/jo902504d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomasz D. Sobieściak
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
| | - Piotr Zielenkiewicz
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland
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Aydin D, Schwieder M, Louban I, Knoppe S, Ulmer J, Haas TL, Walczak H, Spatz JP. Micro-nanostructured protein arrays: a tool for geometrically controlled ligand presentation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:1014-8. [PMID: 19242941 DOI: 10.1002/smll.200801219] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Affiliation(s)
- Daniel Aydin
- Abteilung Neue Materialien und Biosysteme, Max-Planck-Institut für Metallforschung & Institut für Biophysikalische Chemie, Universität Heidelberg, Stuttgart, Germany
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19
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Li QX, Wang XF, Cai L, Li Q, Meng XG, Xuan AG, Huang SY, Ai J. Crystal structure, superoxide dismutase activity and electrochemical property of complex [Cu(dtne)]·(ClO4)2·CH3CH2OH. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2008.11.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Synthesis, structure, and magnetic properties of a new binuclear Ni(II) complex supported by 1,4,8-triazacycloundecane. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Malkhasian AYS, Finch ME, Pawlak PL, Anderson JM, Brennessel WW, Chavez FA. Synthesis, Structure, and Characterization of Dichloro-(1-Benzyl-4-Acetato-1,4,7-Triazacyclononane)Iron(III). Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Marin VL, Bayburt TH, Sligar SG, Mrksich M. Functional assays of membrane-bound proteins with SAMDI-TOF mass spectrometry. Angew Chem Int Ed Engl 2008; 46:8796-8. [PMID: 17943935 PMCID: PMC2790068 DOI: 10.1002/anie.200702694] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Violeta L Marin
- Department of Chemistry and Howard Hughes Medical Institute, University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
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23
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Marin V, Bayburt T, Sligar S, Mrksich M. Functional Assays of Membrane-Bound Proteins with SAMDI-TOF Mass Spectrometry. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702694] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Zhang Z, Mikkola S, Lonnberg H. Regio-selective synthesis of polyazacyclophanes incorporating a pendant group as potential cleaving agents of mRNA 5′-cap structure. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Belousoff MJ, Battle AR, Graham B, Spiccia L. Syntheses, structures and hydrolytic properties of copper(II) complexes of asymmetrically N-functionalised 1,4,7-triazacyclononane ligands. Polyhedron 2007. [DOI: 10.1016/j.poly.2006.06.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Battle AR, Spiccia L. Molecular structure and hydrolytic stability amidinium salts derived from triazatricyclo[5.2.1.04,10]decane. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.05.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Anda C, Bencini A, Berni E, Ciattini S, Chuburu F, Danesi A, Giorgi C, Handel H, Le Baccon M, Paoletti P, Tripier R, Turcry V, Valtancoli B. Mono- and Dinuclear CuII and ZnII Complexes of Cyclen-Based Bis(macrocycles) Containing Two Aminoalkyl Pendant Arms of Different Lengths. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400896] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Johnson DL, Martin LL. Controlling Protein Orientation at Interfaces Using Histidine Tags: An Alternative to Ni/NTA. J Am Chem Soc 2005; 127:2018-9. [PMID: 15713059 DOI: 10.1021/ja045084g] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A strategy for immobilizing histidine-tagged proteins at surfaces has been developed by using a macrocyclic chelator that enhances the stability and specificity of conventional histidine-tag technology and allows application of this technology to long-term studies including direct electrochemistry.
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Affiliation(s)
- Daniel L Johnson
- School of Chemistry, Monash University, Victoria 3800, Australia
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29
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Warden AC, Spiccia L, Hearn MTW, Boas JF, Pilbrow JR. The synthesis, structure and properties of copper(ii) complexes of asymmetrically functionalized derivatives of 1,4,7-triazacyclononane. Dalton Trans 2005:1804-13. [PMID: 15877151 DOI: 10.1039/b417739h] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of 1-propylamino-4-acetato-1,4,7-triazacyclononane (L1), 1-benzyl-4-acetato-1,4,7-triazacyclononane (L2) and 1-benzyl-4-propylamino-1,4,7-triazacyclononane (L3) with a copper(II) salt gave Na2[CuL1](ClO4)3(1a), [CuL2]Cl (2) and [Cu2L32](ClO4)4.5H2O (3), respectively. [CuL4]ClO4 (4) was formed by reacting 1-formyl-4-ethylacetato-1,4,7-triazacyclononane with cupric chloride in aqueous solution. The X-ray crystal structures of the complexes reveal that the ligands generate distorted square pyramidal or square planar coordination environments about the Cu(II) centre, but in three complexes (1b, 3 and 4) weak interactions to an oxygen atom from a perchlorate anion and, in the case of 4, also to an amide nitrogen leading to tetragonally elongated octahedral Cu(II) geometries. In 4, the formyl group is found to reduce the coordinating ability of the macrocyclic nitrogen to which it is attached, as evidenced by the weak CuN interaction. The formation of five-membered chelate rings on coordination of the ligands further contributes to the distortion from the ideal geometries. The crystal lattices contain a number of novel supramolecular features. 1a contains a negatively charged sodium perchlorate chain of composition [Na2(ClO4)3]x(x-), with a complex series of Na-O-Na bridges flanked by [CuL1]+ units, while 3 contains highly complex hydrogen bonded sheets approximately 20 A thick that stack through van der Waals interactions. One-dimensional chains comprised of copper complexes are found in 2 and 4, and are held together by hydrogen bonds in 2 and acetate bridges between the copper cations in 4. The solution EPR spectra indicate that the copper(II) centres exist in isolated distorted square pyramidal (possibly square planar for 4) environments, while in the solid state there is evidence for the existence of weak exchange and dipole-dipole coupling for some complexes.
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Affiliation(s)
- Andrew C Warden
- School of Chemistry, Monash University, Victoria, 3800, Australia
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30
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Tei L, Bencini A, Blake AJ, Lippolis V, Perra A, Valtancoli B, Wilson C, Schröder M. Co-ordination chemistry of amino pendant arm derivatives of 1,4,7-triazacyclononane. Dalton Trans 2004:1934-44. [PMID: 15252580 DOI: 10.1039/b404312j] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding properties of 1,4,7-triazacyclononane ([9]aneN3) to metal cations can be adapted through sequential functionalisation of the secondary amines with aminoethyl or aminopropyl pendant arms to generate ligands with increasing numbers of donor atoms. The new amino functionalised pendant arm derivative of 1,4,7-triazacyclononane ([9]aneN3), L1, has been synthesised and its salt [H2L1]Cl2 characterised by X-ray diffraction. The protonation constants of the ligands L1-L4 having one, two or three aminoethyl or three aminopropyl pendant arms, respectively, on the [9]aneN3 framework, and the thermodynamic stabilities of their mononuclear complexes with CuII and ZnII have been investigated by potentiometric measurements in aqueous solutions. In order to discern the protonation sites of ligands L1-L4, 1H NMR spectroscopic studies were performed in D2O as a function of pH. While the stability constants of the CuII complexes increase on going from L1 to L2 and then decrease on going from L2 to L3 and L4, those for ZnII complexes increase from L1 to L3 and then decrease for L4. The X-ray crystal structures of the complexes [Cu(L1)(Br)]Br, [Zn(L1)(NO3)]NO3, [Cu(L2)](ClO4)2, [Ni(L2)(MeCN)](BF4)2, [Zn(L4)](BF4)2.MeCN and [Mn(L4)](NO3)2.1/2H2O have been determined. In both [Cu(L1)(Br)]Br and [Zn(L1)(NO3)]NO3 the metal ion is five co-ordinate and bound by four N-donors of the macrocyclic ligand and by one of the two counter-anions. The crystal structures of [Cu(L2)](ClO4)2 and [Ni(L2)(MeCN)](BF4)2 show the metal centre in slightly distorted square-based pyramidal and octahedral geometry, respectively, with a MeCN molecule completing the co-ordination sphere around NiII in the latter. In both [Zn(L4)](BF4)2.MeCN and [Mn(L4)](NO3)2.1/2H2O the metal ion is bound by all six N-donors of the macrocyclic ligand in a distorted octahedral geometry. Interestingly, and in agreement with the solution studies and with the marked preference of CuII to assume a square-based pyramidal geometry with these types of ligands, the reaction of L4 with one equivalent of Cu(BF4)2.4H2O in MeOH at room temperature yields a square-based pyramidal five co-ordinate CuII complex [Cu(L6)](BF4)2 where one of the three propylamino pendant arms of the starting ligand has been cleaved to give L6.
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Affiliation(s)
- Lorenzo Tei
- Dipartimento di Chimica Inorganica ed analitica, University of Cagliari, Complesso Universitario di Monserrato, S. S. 554 Bivio per Sestu, 09042 (CA), Italy
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31
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Chong HS, Brechbiel MW. A Short and Efficient Synthesis of Mono-substituted 1,4,7-Triazacyclononanes. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120017190] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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32
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Kim BM, So SM, Choi HJ. A concise, modular synthesis of chiral peraza-macrocycles using chiral aziridines. Org Lett 2002; 4:949-52. [PMID: 11893193 DOI: 10.1021/ol025513k] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Novel chiral peraza-macrocycles were synthesized from chiral aziridines as a common building block. Efficient syntheses of chiral [26]-N(6), [12]-N(4), [9]-N(3), and [14]-N(4) systems were accomplished.
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Affiliation(s)
- B Moon Kim
- Center for Molecular Catalysis, School of Chemistry and Molecular Engineering, Seoul National University, Seoul 151-747, Korea.
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