1
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Li HQ, Sun YC, Shi L, Chen FL, Shen FX, Zhao Y, Wang XY. Modulating the Structures and Magnetic Properties of Dy(III) Single-Molecule Magnets through Acid-Base Regulation. Inorg Chem 2022; 61:2272-2283. [PMID: 35025491 DOI: 10.1021/acs.inorgchem.1c03639] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical modulation on the structures and physical properties of the coordination complexes is of great interest for the preparation of new functional materials. By changing the acidity or basicity of the reaction medium, the deprotonation degree of a multidentate ligand with multiple active protons, H4daps (H4daps = N',N'″-((1E,1'E)-pyridine-2,6-diylbis(ethan-1-yl-1-ylidene))bis(2-hydroxybenzohydrazide)), can be regulated on purpose. With this ligand of different deprotonation and charges, three new DyIII complexes ([Dy(H3daps)(CH3COO)2(EtOH)]·CH3COOH (1Dy), [Dy2(H2daps)2(EtOH)2(H2O)2(MeOH)2](CF3SO3)2·(H2O)2 (2Dy), and [Dy3(H1daps)2(H2daps)(μ3-OH)(EtOH)(H2O)] (3Dy)) of different nuclearities (mono-, di-, and trinuclear for 1Dy to 3Dy, respectively) have been synthesized and characterized structurally and magnetically. Analyses on the related bond lengths and resulting hydrogen bond modes in the complexes provide the details of the deprotonation position and the charge of the ligands, which can be in the form of H3daps-, H2daps2-, and H1daps3-. Interestingly, the more deprotonated ligand can act as a bridging ligand between the DyIII centers using the phenol and/or carbonyl oxygen atoms, which leads to the multinuclear structures. Magnetic studies on these complexes revealed that complex 1Dy is a field-induced single-molecule magnet (SMM), while complexes 2Dy and 3Dy show SMM behavior under a zero dc field.
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Affiliation(s)
- Hong-Qing Li
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yu-Chen Sun
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Le Shi
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Feng-Li Chen
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Fu-Xing Shen
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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2
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Gray PA, Braun JD, Rahimi N, Herbert DE. Diiminepyridine‐Supported Phosphorus(I) and Phosphorus(III) Complexes: Synthesis, Characterization, and Electrochemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Paul A. Gray
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - Jason D. Braun
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - Naser Rahimi
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
| | - David E. Herbert
- Department of Chemistry and the Manitoba Institute for Materials University of Manitoba 144 Dysart Road R3T 2N2 Winnipeg Manitoba Canada
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3
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Mondal AK, Mondal A, Dey B, Konar S. Influence of the Coordination Environment on Easy-Plane Magnetic Anisotropy of Pentagonal Bipyramidal Cobalt(II) Complexes. Inorg Chem 2018; 57:9999-10008. [DOI: 10.1021/acs.inorgchem.8b01162] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 Madhya Pradesh, India
| | - Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 Madhya Pradesh, India
| | - Bijoy Dey
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 Madhya Pradesh, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066 Madhya Pradesh, India
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4
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Nguyen MT, Gabidullin B, Nikonov GI. Neutral and anionic zinc compounds supported by a bis(imino)phenyl NCN ligand. Dalton Trans 2018. [DOI: 10.1039/c8dt00149a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The new zinc complexes 2,6-(ArNCH)2C6H3ZnBu (6) and 2,6-(ArNCH)2C6H3ZnCl2Li(THF)3 (7), supported by a bis(imino)phenyl NCN pincer ligand, were prepared (Ar = 2,6-iPr2C6H3).
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Affiliation(s)
| | - Bulat Gabidullin
- X-Ray Core Facility
- Faculty of Science University of Ottawa
- Ottawa
- Canada K1N 6N5
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5
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Kamat V, Naik K, Revankar VK. Effect of acetate and nitrate anions on the molecular structure of 3-(hydroxyimino)-2-butanone-2-(1H-benzimidazol-2-yl)hydrazone. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Schwade VD, Bessega T, Lang ES, Abram U. Pb⋯N interactions and π-stacking in lead(II) bis(hydrazone) compounds. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Romero MJ, Carballido R, Rodríguez-Silva L, Maneiro M, Zaragoza G, González-Noya AM, Pedrido R. An unusual assembled Pb(ii) meso-helicate that shows the inert pair effect. Dalton Trans 2016; 45:16162-16165. [DOI: 10.1039/c6dt03106d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a meso-helicate exhibiting the inert pair effect for the first time, demonstrating that this effect must be considered for the controlled assembly of Pb(ii) supramolecular helicates/mesocates.
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Affiliation(s)
- María J. Romero
- Departamento de Química Inorgánica
- Facultade de Química
- Campus Vida
- Universidade de Santiago de Compostela
- Santiago de Compostela
| | - Rocío Carballido
- Departamento de Química Inorgánica
- Facultade de Química
- Campus Vida
- Universidade de Santiago de Compostela
- Santiago de Compostela
| | - Laura Rodríguez-Silva
- Departamento de Química Inorgánica
- Facultade de Ciencias
- Universidade de Santiago de Compostela
- Lugo
- Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica
- Facultade de Ciencias
- Universidade de Santiago de Compostela
- Lugo
- Spain
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X
- Edificio CACTUS
- Universidade de Santiago de Compostela
- Santiago de Compostela
- Spain
| | - Ana M. González-Noya
- Departamento de Química Inorgánica
- Facultade de Química
- Campus Vida
- Universidade de Santiago de Compostela
- Santiago de Compostela
| | - Rosa Pedrido
- Departamento de Química Inorgánica
- Facultade de Química
- Campus Vida
- Universidade de Santiago de Compostela
- Santiago de Compostela
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8
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Sousa-Pedrares A, Crespo A, Durán ML, García-Vázquez JA. Directing effects of aminosulfonyl groups on the crystal packing of tin and lead complexes. CrystEngComm 2016. [DOI: 10.1039/c6ce01567k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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10
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Mimicking Peroxidase Activity by a Manganese(II) Complex Involving a New Asymmetric Tetradentate Ligand Containing Both Amino and Imino Groups. J CHEM-NY 2015. [DOI: 10.1155/2015/963152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The asymmetric ligand (E)-4-bromo-2-(((2-((5-bromo-2-hydroxybenzyl)(methyl)amino)ethyl)imino)methyl)phenol has been prepared by a novel seven-step route. All organic compounds isolated in each step have been characterised by elemental analysis, infrared and1H NMR spectroscopy, and mass spectrometry. Interaction of this ligand with manganese has been investigated employing an electrochemical method. This method leads to the formation of a neutral manganese(II) complex7in high yield and purity. The complex has been thoroughly characterised by elemental analysis, infrared spectroscopy, mass spectrometry, magnetic susceptibility measurements, and cyclic voltammetry. Complex7behaves as peroxidase mimic in the presence of the water-soluble trap ABTS, probably due to its ease to coordinate the substrate molecule.
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11
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Flock J, Suljanovic A, Torvisco A, Schoefberger W, Gerke B, Pöttgen R, Fischer RC, Flock M. The Role of 2,6-Diaminopyridine Ligands in the Isolation of an Unprecedented, Low-Valent Tin Complex. Chemistry 2013; 19:15504-17. [DOI: 10.1002/chem.201301340] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Indexed: 11/10/2022]
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12
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Reany O, Fuchs B. Lateral cis-1,3,5,7-tetraazadecalin podands and their complexes: synthesis, structure, and strong binding with Pb(II) and other heavy metal ions. Inorg Chem 2013; 52:1976-90. [PMID: 23360511 DOI: 10.1021/ic3023166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The chemistry and complexation behavior of diaminal podands based on cis-1,3,5,7-tetraazadecalin (cis-TAD) were elaborated, reassessed, and extended. The synthesis of 2,6-bis(hydroxymethylene)-cis-TAD (9) and 2,6-bis(α,α'-dimethyl-β- hydroxyethyl)-cis-TAD (10) as well as of suitably substituted 2,6-diaryl-cis-TAD podands is laid out. For the latter, the effect of electron donating or withdrawing substituents on the benzaldehyde reagents was examined while 9 and 10 were probed and showed considerable propensity for heavy metal-ion chelation. The [Cd(II)·(9)] and [Pb(II)·(9)] complexes stood out indeed, and their structure and properties show a particularly interesting 5-amino-1,3-diazane chelation type and strong ligand-ion binding mode, with intramolecular donor exchange in solution, all strongly influenced by the anomeric effect in the ligand.
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Affiliation(s)
- Ofer Reany
- School of Chemistry, Tel-Aviv University, Ramat-Aviv, 69978 Tel-Aviv, Israel.
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13
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Cortés-Lozada A, Gómez E, Hernández S. Diorganotin (IV) Heptacoordinated Complexes Containing Pentadentate [N3O2] Ligands Derived From 5-Substituted-Salicylaldehydes and Diethylenetriamine: Synthesis, Characterization, and Molecular Structure. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/15533174.2012.680170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Armando Cortés-Lozada
- a Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria, Mexico , D.F. , Mexico
| | - Elizabeth Gómez
- a Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria, Mexico , D.F. , Mexico
| | - Simon Hernández
- a Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria, Mexico , D.F. , Mexico
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14
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Martin CD, Ragogna PJ. Reactions of Diiminopyridine Ligands with Chalcogen Halides. Inorg Chem 2012; 51:2947-53. [DOI: 10.1021/ic202213x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Caleb D. Martin
- Department of Chemistry, The Chemistry
Building, The University of Western Ontario, 1151 Richmond Street,
London, Ontario, Canada N6A 5B7
| | - Paul J. Ragogna
- Department of Chemistry, The Chemistry
Building, The University of Western Ontario, 1151 Richmond Street,
London, Ontario, Canada N6A 5B7
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15
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Klein JM, Clegg JK, Saggiomo V, Reck L, Lüning U, Sanders JKM. Metal induced folding: synthesis and conformational analysis of the lanthanide complexes of two 44-membered hydrazone macrocycles. Dalton Trans 2012; 41:3780-6. [PMID: 22334117 DOI: 10.1039/c2dt11861k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six new lanthanide complexes of two 44-membered macrocycles have been prepared and characterised in solution. An analysis of the conformations of the free macrocycles and their lanthanide complexes both in solution (2D NMR) and in solid state (X-ray crystallography) demonstrate that the complexation induces changes in folding of the macrocycles.
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Affiliation(s)
- Jörg M Klein
- University Chemical Laboratory, University of Cambridge, UK
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16
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Romero MJ, Pedrido R, González-Noya AM, Maneiro M, Fernández-García MI, Zaragoza G, Bermejo MR. Versatile coordination behaviour of an asymmetric half-salen ligand bearing a dansyl fluorophore. Dalton Trans 2012; 41:10832-44. [DOI: 10.1039/c2dt31093g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Zeng Y, Feng H, Xie Y, Schaefer III HF. Some “remarkably stable” chalcogen(ii) dications, including comparisons with their structurally distinct monocations and neutrals. NEW J CHEM 2012. [DOI: 10.1039/c2nj40495h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Klein JM, Saggiomo V, Reck L, Lüning U, Sanders JKM. Dynamic combinatorial libraries for the recognition of heavy metal ions. Org Biomol Chem 2011; 10:60-6. [PMID: 22028051 DOI: 10.1039/c1ob05976a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We present the use of hydrazone dynamic combinatorial libraries (DCLs) to identify macrocyclic receptors that are selective for alkaline earth metal ions over alkali metal ions. In particular, the toxic heavy metal ions Sr(2+) and Ba(2+) induce characteristic changes in the DCLs. Four macrocycles were isolated and characterised by LCMS, HRMS, NMR and X-ray crystallography; binding studies by UV-Vis spectroscopy confirm the selectivity observed in the DCLs.
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Affiliation(s)
- Jörg M Klein
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW
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19
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Sadhukhan D, Ray A, Pilet G, Rizzoli C, Rosair GM, Gómez-García CJ, Signorella S, Bellú S, Mitra S. Weak Interactions Modulating the Dimensionality in Supramolecular Architectures in Three New Nickel(II)-Hydrazone Complexes, Magnetostructural Correlation, and Catalytic Potential for Epoxidation of Alkenes under Phase Transfer Conditions. Inorg Chem 2011; 50:8326-39. [DOI: 10.1021/ic200846j] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dipali Sadhukhan
- Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India
| | - Aurkie Ray
- Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India
| | - Guillaume Pilet
- Groupe de Crystallographie et IngénierieMoléculaireLaboratoire des Multimatériaux et Interfaces, UMR 5615 CNRS, Université Claude Bernard Lyon 1, Bât. Jules Raulin, 43 bd du 11 Novembre, 1918 69622 Villeurbanne, Cedex, France
| | - Corrado Rizzoli
- Dipartimento di Chimica Generale ed Inorganica, ChimicaAnalitica, Chimica Fisica, Universitá degli Studi di Parma, Viale G. P. Usberti 17/A I-43100 Parma, Italy
| | - Georgina M. Rosair
- School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, U.K
| | - Carlos J. Gómez-García
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Parque Científico, 46980 Paterna, Spain
| | - Sandra Signorella
- Instituto de Química Rosario (IQUIR)−CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Sebastián Bellú
- Instituto de Química Rosario (IQUIR)−CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Samiran Mitra
- Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India
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20
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Martin CD, Ragogna PJ. Substitution matters: isolating phosphorus diiminopyridine complexes. Dalton Trans 2011; 40:11976-80. [DOI: 10.1039/c1dt11111f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Cordiner RL, Hill AF, Shang R, Willis AC. Group 14 Substituted Carbyne Complexes—An Almost Complete Set: [Mo(≡CAPh3)(CO)2(Tp*)] (Tp* = Hydrotris(dimethylpyrazolyl)borate; A = Si, Ge, Sn, Pb but A ≠ C). Organometallics 2010. [DOI: 10.1021/om100896r] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Richard L. Cordiner
- Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Anthony F. Hill
- Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Rong Shang
- Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Anthony C. Willis
- Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, Australian Capital Territory, Australia
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22
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Hosny NM. Cu(II) and Zr(IV) Complexes with (E)−N −-(1-(Pyridine-4-YL)Ethylidine)Nicotinohydrazide. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/15533174.2010.492550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nasser Mohammed Hosny
- a Chemistry Department, Faculty of Science , Port-Said University , Port-Said, Egypt
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23
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Abstract
Air-stable, chalcogen-centered dications have been synthesized and comprehensively characterized. These represent the first diiminopyridine (DIMPY) complexes of the chalcogens as well as the single nonmetallic (sulfur) complex of this ubiquitous ligand. Their stability under ambient conditions is a distinct contrast to other highly charged main-group cations.
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Affiliation(s)
- Caleb D Martin
- Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, ON, Canada N6A 5B7
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24
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Ray A, Rizzoli C, Pilet G, Desplanches C, Garribba E, Rentschler E, Mitra S. Two New Supramolecular Architectures of Singly Phenoxo-Bridged Copper(II) and Doubly Phenoxo-Bridged Manganese(II) Complexes Derived from an Unusual ONOO Donor Hydrazone Ligand: Syntheses, Structural Variations, Cryomagnetic, DFT, and EPR Studies. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900188] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Mahon MF, McGinley J, Denise Rooney A, Walsh JM. Unusual copper(II) coordination mode from a potential Schiff-base reaction. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.10.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Synthesis and spectroscopic studies of (E)-N−-(1-phenylethylidene)nicotinohydrazide (PNH) and some of its metal complexes. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Pedrido R, Romero MJ, Bermejo MR, Martínez-Calvo M, González-Noya AM, Zaragoza G. Coordinative trends of a tridentate thiosemicarbazone ligand: synthesis, characterization, luminescence studies and desulfurization processes. Dalton Trans 2009:8329-40. [DOI: 10.1039/b908782f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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López-Torres E, Mendiola MA. Structural diversity of benzil bis(benzoylhydrazone): Mononuclear, binuclear and trinuclear complexes. Dalton Trans 2009:7639-47. [DOI: 10.1039/b908662e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Mahon MF, McGinley J, Rooney AD, Walsh JM. Calix[4]arene Schiff bases—potential ligands for fluorescent studies. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Pedrido R, González-Noya AM, Romero MJ, Martínez-Calvo M, Vázquez López M, Gómez-Fórneas E, Zaragoza G, Bermejo MR. Pentadentate thiosemicarbazones as versatile chelating systems. A comparative structural study of their metallic complexes. Dalton Trans 2008:6776-87. [PMID: 19153625 DOI: 10.1039/b810601k] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have prepared some transition and post-transition metal complexes derived from the pentadentate thiosemicarbazone ligand bis(4-N-ethylthiosemicarbazone)-2,6-diacetylpyridine H(2)L(Et), by both chemical and electrochemical procedures. The complexes have been synthesised and fully characterised, including the crystal structures for the ligand H(2)L(Et) and its manganese, cadmium and lead complexes. We have also performed multinuclear (109)Ag, (113)Cd, (119)Sn and (207)Pb studies for silver, cadmium, tin and lead compounds, respectively. Moreover we present here a comparative study on the different structures found for pentadentate thiosemicarbazonate complexes, trying to check the influence of different factors, such as experimental procedure, size of metal, structure of the ligand, and metal oxidation state, on the final structure of the complex formed. Our aim is gaining a better insight into the coordination trends of pentadentate thiosemicarbazone ligands.
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Affiliation(s)
- Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela, Santiago de Compostela, Galicia E-15782, Spain
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Unexpected differences in the reactivity between MPh2Cl2 (M=Pb or Sn) and benzil bis(thiosemicarbazone). X-ray crystal structure of benzil bis(thiosemicarbazonate)lead(II). Polyhedron 2008. [DOI: 10.1016/j.poly.2008.04.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pedrido R, Romero MJ, Bermejo MR, González-Noya AM, García-Lema I, Zaragoza G. Metal-catalysed oxidation processes in thiosemicarbazones: new complexes with the ligand N-{2-([4-N-ethylthiosemicarbazone]methyl)phenyl}-p-toluenesulfonamide. Chemistry 2008; 14:500-12. [PMID: 17918755 DOI: 10.1002/chem.200700867] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The coordination behaviour of a new thiosemicarbazone Schiff-base building block, N-{2-([4-N-ethylthiosemicarbazone]methyl)phenyl}-p-toluenesulfonamide, H2L1 (1), incorporating a bulky tosyl group, towards Mn II, Fe II, Co II, Ni II, Cu II, Zn II, Cd II, Ag I, Sn II, and Pb II has been investigated by means of an electrochemical preparative procedure. Most metal complexes of L1 have the general formula [M(L1)]2.nX (M=Mn, Fe, Co, Ni, Cu, Cd, Pb; n=0-4, X=H2O or CH3CN), as confirmed by the structure of [Pb(L1)]2 (15), in which the lone pair on lead is stereochemically active. This lead(II) complex shows an intense fluorescence emission with a quantum yield of 0.13. In the case of silver, the complex formed was found to possess a stoichiometry of [Ag2(L1)]2.3H2O. During reactions with manganese and copper metals, interesting catalysed processes have been found to take place, with remarkable consequences regarding the ligand skeleton structure. In synthesising the manganese complex, we obtained an unexpected dithiolate thiosemicarbazone tosyl ligand, H2L2, as a side-product, which has been fully characterised, including by X-ray diffraction analysis. In the case of copper, the solid complex has the formula [CuL1]2, but the crystallised product shows the copper atoms coordinated to a new cyclised thiosemicarbazone ligand, H2L3, as in the structures of the complexes [Cu(L3)]2.CH3CN (8) and [Cu(L3)(H2O)]2.CH3CN.H2O (9). The zinc complex [Zn(L1)]4 (12) displays a particular tetranuclear zeolite-type structure capable of hosting small molecules or ions, presumably through hydrogen bonding.
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Affiliation(s)
- Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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Ivanović-Burmazović I. Catalytic dismutation vs. reversible binding of superoxide. ADVANCES IN INORGANIC CHEMISTRY 2008. [DOI: 10.1016/s0898-8838(08)00003-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Albrecht M, Mirtschin S, Osetska O, Dehn S, Enders D, Fröhlich R, Pape T, Hahn EF. Pentadentate Ligands for the 1:1 Coordination of Lanthanide(III) Salts. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700222] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Bermejo MR, González-Noya AM, Martínez-Calvo M, Pedrido R, Romero MJ, Fernández MI, Maneiro M. Electrochemical Synthesis: a Convenient Method for the Preparation of Neutral Metal Complexes with a Thiosemicarbazone Ligand. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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