1
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Hyun SM, Reid KA, Vali SW, Lindahl PA, Powers DC. Cis-Divacant Octahedral Fe(II) in a Dimensionally Reduced Family of 2-(Pyridin-2-yl)pyrrolide Complexes. Inorg Chem 2021; 60:15617-15626. [PMID: 34590844 DOI: 10.1021/acs.inorgchem.1c02240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Four-coordinate transition-metal complexes can adopt a diverse array of coordination geometries, with square planar and tetrahedral coordination being the most prevalent. Previously, we reported the synthesis of a trinuclear Fe(II) complex, Fe3TPM2, supported by a 3-fold-symmetric 2-pyridylpyrrolide ligand [i.e., tris(5-(pyridin-2-yl)-1H-pyrrol-2-yl)methane] that featured a rare cis-divacant octahedral (CDO) geometry at each Fe(II) center. Here, a series of truncated 2-pyridylpyrrolide ligands are described that support mono- and binuclear Fe(II) complexes that also exhibit CDO geometries. Metalation of the tetradentate ligand bis[5-(pyridin-2-yl)-1H-pyrrol-2-yl]methane (H2BPM) in tetrahydrofuran (THF) results in the binuclear complex Fe2(BPM)2(THF)2 in which both Fe(II) ions are octahedrally coordinated. The coordinated THF solvent ligands are labile: THF dissociation leads to Fe2(BPM)2, which features five-coordinate Fe(II) ions. The Fe-Fe distance in these binuclear complexes can be elongated by ligand methylation. Metalation of bis[5-(6-methylpyridin-2-yl)-1H-pyrrol-2-yl]methane (H2BPMMe) in THF leads to the formation of four-coordinate, CDO Fe(II) centers in Fe(BPMMe)2. Further ligand truncation affords bidentate ligands 2-(1H-pyrrol-2-yl)pyridine (PyrPyrrH) and 2-methyl-6-(1H-pyrrol-2-yl)pyridine (PyrMePyrrH). Metalation of these ligands in THF affords six-coordinate complexes Fe(PyrPyrr)2(THF)2 and Fe(PyrMePyrr)2(THF)2. Dissociation of labile solvent ligands provides access to four-coordinate Fe(II) complexes. Ligand disproportionation at Fe(PyrPyrr)2 results in the formation of Fe(PyrPyrr)3 and Fe(0). Ligand methylation suppresses this disproportionation and enables isolation of Fe(PyrMePyrr)2, which is rigorously CDO. Complete ligand truncation, by separating the 2-pyridylpyrrolide ligands into the constituent monodentate pyridyl and pyrrolide donors, affords Fe(Pyr)2(Pyrr)2 in which Fe(II) is tetrahedrally coordinated. Computational analysis indicates that the potential energy surface that dictates the coordination geometry in this family of four-coordinate complexes is fairly flat in the vicinity of CDO coordination. These synthetic studies provide the structural basis to explore the implications of CDO geometry on Fe-catalyzed reactions.
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Affiliation(s)
- Sung-Min Hyun
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Kaleb A Reid
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Shaik Waseem Vali
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Paul A Lindahl
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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2
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Uzelac M, Mastropierro P, Tullio M, Borilovic I, Tarrés M, Kennedy AR, Aromí G, Hevia E. Tandem Mn–I Exchange and Homocoupling Processes Mediated by a Synergistically Operative Lithium Manganate. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marina Uzelac
- EastCHEM School of Chemistry University of Edinburgh Edinburgh EH9 3FJ UK
| | | | - Marco Tullio
- WestCHEM Department of Pure and Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Ivana Borilovic
- Departament de Química Inorgànica Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
- Department of Chemistry University of Manchester and Photon Science Institute Oxford Road Manchester M13 9PL UK
| | - Màrius Tarrés
- WestCHEM Department of Pure and Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Alan R. Kennedy
- WestCHEM Department of Pure and Applied Chemistry University of Strathclyde 295 Cathedral Street G1 1XL Glasgow UK
| | - Guillem Aromí
- Departament de Química Inorgànica Universitat de Barcelona Diagonal 645 08028 Barcelona Spain
- Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB) Spain
| | - Eva Hevia
- Department für Chemie und Biochemie Universität Bern 3012 Bern Switzerland
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3
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Uzelac M, Mastropierro P, de Tullio M, Borilovic I, Tarrés M, Kennedy AR, Aromí G, Hevia E. Tandem Mn-I Exchange and Homocoupling Processes Mediated by a Synergistically Operative Lithium Manganate. Angew Chem Int Ed Engl 2021; 60:3247-3253. [PMID: 33090640 DOI: 10.1002/anie.202013153] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 12/15/2022]
Abstract
Pairing lithium and manganese(II) to form lithium manganate [Li2 Mn(CH2 SiMe3 )4 ] enables the efficient direct Mn-I exchange of aryliodides, affording transient (aryl)lithium manganate intermediates which in turn undergo spontaneous C-C homocoupling at room temperature to furnish symmetrical (bis)aryls in good yields under mild reaction conditions. The combination of EPR with X-ray crystallographic studies has revealed the mixed Li/Mn constitution of the organometallic intermediates involved in these reactions, including the homocoupling step which had previously been thought to occur via a single-metal Mn aryl species. These studies show Li and Mn working together in a synergistic manner to facilitate both the Mn-I exchange and the C-C bond-forming steps. Both steps are carefully synchronized, with the concomitant generation of the alkyliodide ICH2 SiMe3 during the Mn-I exchange being essential to the aryl homocoupling process, wherein it serves as an in situ generated oxidant.
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Affiliation(s)
- Marina Uzelac
- EastCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | | | - Marco de Tullio
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, G1 1XL, Glasgow, UK
| | - Ivana Borilovic
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.,Department of Chemistry, University of Manchester and Photon Science Institute, Oxford Road, Manchester, M13 9PL, UK
| | - Màrius Tarrés
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, G1 1XL, Glasgow, UK
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, G1 1XL, Glasgow, UK
| | - Guillem Aromí
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.,Institute of Nanoscience and Nanotechnology of the, University of Barcelona (IN2UB), Spain
| | - Eva Hevia
- Department für Chemie und Biochemie, Universität Bern, 3012, Bern, Switzerland
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4
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Magott M, Reczyński M, Gaweł B, Sieklucka B, Pinkowicz D. A Photomagnetic Sponge: High-Temperature Light-Induced Ferrimagnet Controlled by Water Sorption. J Am Chem Soc 2018; 140:15876-15882. [PMID: 30376320 DOI: 10.1021/jacs.8b09322] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
"Converting" light energy to magnetization is the attribute of molecule-based compounds called photomagnets and is inaccessible for conventional magnetic solids. The design and synthesis of such compounds, however, is a formidable challenge, and only a few examples are known, all with rather low magnetic ordering temperatures well below the boiling point of liquid nitrogen. Herein, a cyanide-bridged coordination polymer, {[MnII(imidazole)]2[WIV(CN)8]} n, exhibiting the highest light-induced magnetic ordering temperature ever observed and a magnetic hysteresis loop up to 90 K is reported. The photomagnetic effect results from the blue light excitation (450 nm) of the constituent octacyanotungstate(IV) moiety, which then couples magnetically with manganese(II), resulting in light-induced ferrimagnetic ordering. The reported coordination framework shows also outstanding water sorption properties that are strongly correlated with the photomagnetic functionality. The photoswitching observed in the anhydrous state is completely quenched by the reversible capture of water, with the fully hydrated phase becoming practically non-photomagnetic.
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Affiliation(s)
- Michał Magott
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Mateusz Reczyński
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Bartłomiej Gaweł
- Department of Materials Science and Engineering , Norwegian University of Science and Technology (NTNU) , 7491 Trondheim , Norway
| | - Barbara Sieklucka
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
| | - Dawid Pinkowicz
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Kraków , Poland
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5
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Smithen DA, Yin H, Beh MHR, Hetu M, Cameron TS, McFarland SA, Thompson A. Synthesis and Photobiological Activity of Ru(II) Dyads Derived from Pyrrole-2-carboxylate Thionoesters. Inorg Chem 2017; 56:4121-4132. [PMID: 28301148 DOI: 10.1021/acs.inorgchem.7b00072] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and characterization of a series of heteroleptic ruthenium(II) dyads derived from pyrrole-2-carboxylate thionoesters are reported. Ligands bearing a conjugated thiocarbonyl group were found to be more reactive toward Ru(II) complexation compared to analogous all-oxygen pyrrole-2-carboxylate esters, and salient features of the resulting complexes were determined using X-ray crystallography, electronic absorption, and NMR spectroscopy. Selected complexes were evaluated for their potential in photobiological applications, whereupon all compounds demonstrated in vitro photodynamic therapy effects in HL-60 and SK-MEL-28 cells, with low nanomolar activities observed, and exhibited some of the largest photocytotoxicity indices to date (>2000). Importantly, the Ru(II) dyads could be activated by relatively soft doses of visible (100 J cm-2, 29 mW cm-2) or red light (100 J cm-2, 34 mW cm-2), which is compatible with therapeutic applications. Some compounds even demonstrated up to five-fold selectivity for malignant cells over noncancerous cells. These complexes were also shown to photocleave, and in some cases unwind, DNA in cell-free experiments. Thus, this new class of Ru(II) dyads has the capacity to interact with and damage biological macromolecules in the cell, making them attractive agents for photodynamic therapy.
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Affiliation(s)
- Deborah A Smithen
- Department of Chemistry, Dalhousie University , P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Huimin Yin
- Department of Chemistry, Acadia University , 6 University Avenue, Wolfville, Nova Scotia B4P 2R6, Canada
| | - Michael H R Beh
- Department of Chemistry, Dalhousie University , P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Marc Hetu
- Department of Chemistry, Acadia University , 6 University Avenue, Wolfville, Nova Scotia B4P 2R6, Canada
| | - T Stanley Cameron
- Department of Chemistry, Dalhousie University , P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Sherri A McFarland
- Department of Chemistry, Acadia University , 6 University Avenue, Wolfville, Nova Scotia B4P 2R6, Canada.,Department of Chemistry and Biochemistry, University of North Carolina at Greensboro , 301 McIver Street, Greensboro, North Carolina 27402, United States
| | - Alison Thompson
- Department of Chemistry, Dalhousie University , P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
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6
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Hashimoto T, Kawato Y, Nakajima Y, Ohki Y, Tatsumi K, Ando W, Sato K, Shimada S. Synthesis of dimethylmanganese(II) complexes bearing N-heterocyclic carbenes and nucleophilic substitution reaction of tetraalkoxysilanes by diorganomanganese(II) complexes. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.07.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Uzelac M, Borilovic I, Amores M, Cadenbach T, Kennedy AR, Aromí G, Hevia E. Structural and Magnetic Diversity in Alkali-Metal Manganate Chemistry: Evaluating Donor and Alkali-Metal Effects in Co-complexation Processes. Chemistry 2016; 22:4843-54. [PMID: 26916525 DOI: 10.1002/chem.201504956] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 01/14/2023]
Abstract
By exploring co-complexation reactions between the manganese alkyl Mn(CH2SiMe3)2 and the heavier alkali-metal alkyls M(CH2SiMe3) (M=Na, K) in a benzene/hexane solvent mixture and in some cases adding Lewis donors (bidentate TMEDA, 1,4-dioxane, and 1,4-diazabicyclo[2,2,2] octane (DABCO)) has produced a new family of alkali-metal tris(alkyl) manganates. The influences that the alkali metal and the donor solvent impose on the structures and magnetic properties of these ates have been assessed by a combination of X-ray, SQUID magnetization measurements, and EPR spectroscopy. These studies uncover a diverse structural chemistry ranging from discrete monomers [(TMEDA)2 MMn(CH2SiMe3)3] (M=Na, 3; M=K, 4) to dimers [{KMn(CH2SiMe3)3 ⋅C6 H6}2] (2) and [{NaMn(CH2SiMe3)3}2 (dioxane)7] (5); and to more complex supramolecular networks [{NaMn(CH2SiMe3)3}∞] (1) and [{Na2Mn2 (CH2SiMe3)6 (DABCO)2}∞] (7)). Interestingly, the identity of the alkali metal exerts a significant effect in the reactions of 1 and 2 with 1,4-dioxane, as 1 produces coordination adduct 5, while 2 forms heteroleptic [{(dioxane)6K2Mn2 (CH2SiMe3)4(O(CH2)2OCH=CH2)2}∞] (6) containing two alkoxide-vinyl anions resulting from α-metalation and ring opening of dioxane. Compounds 6 and 7, containing two spin carriers, exhibit antiferromagnetic coupling of their S=5/2 moments with varying intensity depending on the nature of the exchange pathways.
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Affiliation(s)
- Marina Uzelac
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Ivana Borilovic
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain
| | - Marco Amores
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Thomas Cadenbach
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.,Escuela Politécnica Nacional, Departamento De Física, Ladron de Guevera E11-253, Quito, 170517, Ecuador
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Guillem Aromí
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.
| | - Eva Hevia
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.
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8
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Price JS, Chadha P, Emslie DJH. Base-Free and Bisphosphine Ligand Dialkylmanganese(II) Complexes as Precursors for Manganese Metal Deposition. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00907] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffrey S. Price
- Department of Chemistry and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Preeti Chadha
- Department of Chemistry and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - David J. H. Emslie
- Department of Chemistry and
Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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9
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Tanabe KK, Ferrandon MS, Siladke NA, Kraft SJ, Zhang G, Niklas J, Poluektov OG, Lopykinski SJ, Bunel EE, Krause TR, Miller JT, Hock AS, Nguyen ST. Discovery of Highly Selective Alkyne Semihydrogenation Catalysts Based on First-Row Transition-Metallated Porous Organic Polymers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405080] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Tanabe KK, Ferrandon MS, Siladke NA, Kraft SJ, Zhang G, Niklas J, Poluektov OG, Lopykinski SJ, Bunel EE, Krause TR, Miller JT, Hock AS, Nguyen ST. Discovery of Highly Selective Alkyne Semihydrogenation Catalysts Based on First-Row Transition-Metallated Porous Organic Polymers. Angew Chem Int Ed Engl 2014; 53:12055-8. [DOI: 10.1002/anie.201405080] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/07/2014] [Indexed: 11/07/2022]
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11
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Chadha P, Emslie DJH, Jenkins HA. Manganese(II) Alkyl/π-Allyl Complexes Resistant to Ligand Redistribution. Organometallics 2014. [DOI: 10.1021/om500101m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Preeti Chadha
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S
4M1, Canada
| | - David J. H. Emslie
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S
4M1, Canada
| | - Hilary A. Jenkins
- McMaster Analytical X-Ray Diffraction Facility,
Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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12
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Zartilas S, Papatriantafyllopoulou C, Stamatatos TC, Nastopoulos V, Cremades E, Ruiz E, Christou G, Lampropoulos C, Tasiopoulos AJ. A MnII6MnIII6 Single-Strand Molecular Wheel with a Reuleaux Triangular Topology: Synthesis, Structure, Magnetism, and DFT Studies. Inorg Chem 2013; 52:12070-9. [DOI: 10.1021/ic401872c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sotiris Zartilas
- Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus
| | | | | | | | - Eduard Cremades
- Department de Química Inorgànica
and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Eliseo Ruiz
- Department de Química Inorgànica
and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - George Christou
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Christos Lampropoulos
- Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus
- Department of Chemistry, University of North Florida, Jacksonville, Florida 32224, United States
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13
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Engerer LK, Carlson CN, Hanusa TP, Brennessel WW, Young VG. σ- vs π-Bonding in Manganese(II) Allyl Complexes. Organometallics 2012. [DOI: 10.1021/om300478v] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laura K. Engerer
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235,
United States
| | - Christin N. Carlson
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235,
United States
| | - Timothy P. Hanusa
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235,
United States
| | - William W. Brennessel
- X-ray Crystallographic
Laboratory,
Chemistry Department, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Victor G. Young
- X-ray Crystallographic
Laboratory,
Chemistry Department, University of Minnesota, Minneapolis, Minnesota 55455, United States
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14
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Li W, Xue M, Xu F, Tu J, Zhang Y, Shen Q. Synthesis, characterization of bridged bis(amidinate) lanthanide amides and their application as catalysts for addition of amines to nitriles for monosubstituted N-arylamidines. Dalton Trans 2012; 41:8252-60. [DOI: 10.1039/c2dt30400g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Kennedy AR, Klett J, Mulvey RE, Robertson SD. N-Heterocyclic-Carbene-Induced Monomerization of Sterically Encumbered Dialkylmagnesium and Dialkylmanganese Polymers. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100595] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Pérez CM, Rodríguez-Delgado A, Palma P, Álvarez E, Gutiérrez-Puebla E, Cámpora J. Neutral and Cationic Alkylmanganese(II) Complexes Containing 2,6-Bisiminopyridine Ligands. Chemistry 2010; 16:13834-42. [DOI: 10.1002/chem.201001428] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Andino JG, Flores JA, Karty JA, Massa JP, Park H, Tsvetkov NP, Wolfe RJ, Caulton KG. Ligand Influence on Metal Aggregation: a Unique Bonding Mode for Pyridylpyrrolides. Inorg Chem 2010; 49:7626-8. [DOI: 10.1021/ic100878s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José G. Andino
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Jaime A. Flores
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Jonathan A. Karty
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Joseph P. Massa
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Hyunsoo Park
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Nikolay P. Tsvetkov
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Robert J. Wolfe
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
| | - Kenneth G. Caulton
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405
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18
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Cámpora J, Palma P, Pérez CM, Rodríguez-Delgado A, Álvarez E, Gutiérrez-Puebla E. Synthesis and Reactions of Manganese(II) Dialkyl Complexes Containing Monodentate and Bidentate Nitrogen Ligands. Organometallics 2010. [DOI: 10.1021/om100190g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Cámpora
- Instituto de Investigaciones Químicas, CSIC−Universidad de Sevilla, C/ Amérivo Vespucio, 49, 41092, Sevilla, Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas, CSIC−Universidad de Sevilla, C/ Amérivo Vespucio, 49, 41092, Sevilla, Spain
| | - Carmen M. Pérez
- Instituto de Investigaciones Químicas, CSIC−Universidad de Sevilla, C/ Amérivo Vespucio, 49, 41092, Sevilla, Spain
| | - Antonio Rodríguez-Delgado
- Instituto de Investigaciones Químicas, CSIC−Universidad de Sevilla, C/ Amérivo Vespucio, 49, 41092, Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, CSIC−Universidad de Sevilla, C/ Amérivo Vespucio, 49, 41092, Sevilla, Spain
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19
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Alberola A, Blair VL, Carrella LM, Clegg W, Kennedy AR, Klett J, Mulvey RE, Newton S, Rentschler E, Russo L. Bis[(trimethylsilyl)methyl]manganese: Structural Variations of Its Solvent-Free and TMEDA-, Pyridine-, and Dioxane-Complexed Forms. Organometallics 2009. [DOI: 10.1021/om801135d] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio Alberola
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Victoria L. Blair
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Luca M. Carrella
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - William Clegg
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Alan R. Kennedy
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Jan Klett
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Robert E. Mulvey
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Sean Newton
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Eva Rentschler
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
| | - Luca Russo
- WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, Scotland G1 1XL, United Kingdom, Institut für Anorganische Chemie and Analytische Chemie, Johannes-Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany, School of Natural Sciences (Chemistry), Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom, and Departament de Química Física i Analítica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12071 Castello, Spain
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Luo W, Wang XT, Meng XG, Cheng GZ, Ji ZP. Metal coordination architectures of N-acyl-salicylhydrazides: The effect of metal ions and steric repulsion of ligands to their structures of polynuclear metal complexes. Polyhedron 2009. [DOI: 10.1016/j.poly.2008.10.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Milios CJ, Inglis R, Jones LF, Prescimone A, Parsons S, Wernsdorfer W, Brechin EK. Constructing clusters with enhanced magnetic properties by assembling and distorting Mn3 building blocks. Dalton Trans 2009:2812-22. [DOI: 10.1039/b820362h] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Stoumpos CC, Stamatatos TC, Sartzi H, Roubeau O, Tasiopoulos AJ, Nastopoulos V, Teat SJ, Christou G, Perlepes SP. Employment of methyl 2-pyridyl ketone oxime in manganese non-carboxylate chemistry: MnII2MnIV and MnII2MnIII6 complexes. Dalton Trans 2009:1004-15. [DOI: 10.1039/b813828a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ilango S, Vidjayacoumar B, Gambarotta S, Gorelsky SI. Low-Valent Vanadium Complexes of a Pyrrolide-Based Ligand. Electronic Structure of a Dimeric V(I) Complex with a Short and Weak Metal−Metal Bond. Inorg Chem 2008; 47:3265-73. [DOI: 10.1021/ic702280g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sougandi Ilango
- Department of Chemistry and Laboratory of Computational Chemistry, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Balamurugan Vidjayacoumar
- Department of Chemistry and Laboratory of Computational Chemistry, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry and Laboratory of Computational Chemistry, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Serge I. Gorelsky
- Department of Chemistry and Laboratory of Computational Chemistry, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Vidyaratne I, Crewdson P, Lefebvre E, Gambarotta S. Dinitrogen Coordination and Cleavage Promoted by a Vanadium Complex of a σ,π,σ-Donor Ligand. Inorg Chem 2007; 46:8836-42. [PMID: 17883267 DOI: 10.1021/ic701219h] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The deprotonation of the tripyrrole MeTPH(2) [MeTPH(2) = 2,5-[(2-pyrrolyl)(C(6)H(5))2C](2)(MeNC(4)H(2))], containing one N-methylated pyrrolyl ring, was carried out with 2 equiv of KH. The corresponding dipotassium salt reacted with VCl(3)(THF)(3) to afford the complex [(MeTP)VCl(THF)].THF (1). While the two lateral pyrrolide rings are sigma-bonded, the central one is perpendicularly oriented in a sort of pi-fashion. However, the bond distances clearly indicated that only the quaternized N atom is forming a bonding contact. Subsequent reduction of 1 with Na yielded the corresponding divalent complex [(MeTP)V(THF)].(C(7)H(8))(0.5) (2) where the central N-methylated ring adopted a more regular pi-orientation. When treated with a strong Lewis acid (AlMe(3)), THF was extracted from the vanadium coordination sphere, forming the dinuclear dinitrogen complex [(MeTP)V(mu-N(2))](2).(C(7)H(8))(2.9) (3). Reduction of 3 with potassium graphite gave cleavage of dinitrogen, affording the mixed-valent nitride-bridged complex [(MeTP)V(mu-N)](2).(THF) (4).
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Affiliation(s)
- Indu Vidyaratne
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Garcia-Alvarez J, Kennedy AR, Klett J, Mulvey RE. Alkali-Metal-Mediated Manganation: A Method for Directly Attaching Manganese(II) Centers to Aromatic Frameworks. Angew Chem Int Ed Engl 2007; 46:1105-8. [PMID: 17195270 DOI: 10.1002/anie.200604542] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joaquin Garcia-Alvarez
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
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Garcia-Álvarez J, Kennedy A, Klett J, Mulvey R. Alkali-Metal-Mediated Manganation: A Method for Directly Attaching Manganese(II) Centers to Aromatic Frameworks. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604542] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hatnean JA, Raturi R, Lefebvre J, Leznoff DB, Lawes G, Johnson SA. Assembly of Triangular Trimetallic Complexes by Triamidophosphine Ligands: Spin-Frustrated Mn2+ Plaquettes and Diamagnetic Mg2+ Analogues with a Combined Through-Space, Through-Bond Pathway for 31P-31P Spin−Spin Coupling. J Am Chem Soc 2006; 128:14992-9. [PMID: 17105311 DOI: 10.1021/ja065597i] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of 2 equiv of the ligand precursor P(CH2NHPh)3 or P[CH2NH-3,5-(CF3)2C6H3]3 with 3 equiv of Mn[N(SiMe3)2]2 provide high-yielding routes to the triangular trinuclear Mn(II) complexes [P(CH2NPh)3]2Mn3(THF)3.1.5THF and [P(CH2N-3,5-(CF3)2C6H3)3]2Mn3(THF)3. The solid-state structures of these paramagnetic complexes have approximate C3 symmetry. The magnetic moments from 300 to 1.8 K could be fit as a magnetic Jahn-Teller distorted isosceles triangle. These complexes exhibit spin frustration and possess an S = 1/2 ground state, as revealed by a plot of magnetization versus field at 1.8 K; at fields above 3.8 T, the occupation of an excited state with S = 3/2 becomes significant. The diamagnetic magnesium analogues were prepared by the reaction of the ligand precursor P(CH2NHPh)3, P[CH2NH-3,5-(CF3)2C6H3]3, or P(CH2NH-3,5-Me2C6H3)3 with nBu2Mg. The solid-state structures of [P(CH2NPh)3]2Mg3(THF)3.1.5THF and [P(CH2N-3,5-(CF3)2C6H3)3]2Mg3(THF)3 were determined. Solution 1H NMR spectroscopy was used to demonstrate that the solid-state structures are maintained in solution. The aryl group of the terminal amido donor exhibits slow rotation on the NMR time scale, and this was found to be an electronic effect. Solution 31P{1H} NMR spectroscopy revealed an unexpected 15 Hz coupling between phosphorus nuclei in these complexes. Calculations on a model complex using density functional theory demonstrates that this coupling occurs via a combined through-space, through-bond pathway.
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Affiliation(s)
- Jillian A Hatnean
- Department of Chemistry & Biochemistry, University of Windsor, Windsor, Ontario, Canada N9B 3P4
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