1
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Koibuchi R, Omasa K, Yoshikawa I, Houjou H. Photoinduced Crystal-to-Liquid Transition of Acylhydrazone-Based Photoswitching Molecules. J Phys Chem Lett 2023; 14:8320-8326. [PMID: 37695691 DOI: 10.1021/acs.jpclett.3c02164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
A photoinduced crystal-to-liquid transition (PCLT) behavior of new acylhydrazone derivatives (NCs) is reported. The photoswitching of the NCs was identified as a negative photochromism with a high E-to-Z conversion yield (>98%). A kinetic analysis shows a half-life of almost one month. Owing to these high photoswitching performances, we successfully isolated both E- and Z-forms, evaluated their crystal structures, and observed distinct thermal behaviors. The Z-form melts at a lower temperature than the E-form by several tens of degrees. The PCLT occurs at even lower temperatures. UV irradiation induces the E-to-Z conversion in the crystalline state, thereby inducing a eutectic melting. In addition to the PCLT, we observed a photomechanical behavior of the crystals, which suggests that the presented acylhydrazones can be new members of the photoresponsive crystalline materials.
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Affiliation(s)
- Ryo Koibuchi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Koichiro Omasa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Isao Yoshikawa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Hirohiko Houjou
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
- Environmental Science Center, The University of Tokyo, 7-3-1 Hongo, Tokyo 113- 0033, Japan
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2
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Scalese G, Machado I, Salinas G, Pérez-Díaz L, Gambino D. Heteroleptic Oxidovanadium(V) Complexes with Activity against Infective and Non-Infective Stages of Trypanosoma cruzi. Molecules 2021; 26:5375. [PMID: 34500808 PMCID: PMC8433833 DOI: 10.3390/molecules26175375] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 12/18/2022] Open
Abstract
Five heteroleptic compounds, [VVO(IN-2H)(L-H)], where L are 8-hydroxyquinoline derivatives and IN is a Schiff base ligand, were synthesized and characterized in both the solid and solution state. The compounds were evaluated on epimastigotes and trypomastigotes of Trypanosoma cruzi as well as on VERO cells, as a mammalian cell model. Compounds showed activity against trypomastigotes with IC50 values of 0.29-3.02 μM. IN ligand and the new [VVO2(IN-H)] complex showed negligible activity. The most active compound [VVO(IN-2H)(L2-H)], with L2 = 5-chloro-7-iodo-8-hydroxyquinoline, showed good selectivity towards the parasite and was selected to carry out further biological studies. Stability studies suggested a partial decomposition in solution. [VVO(IN-2H)(L2-H)] affects the infection potential of cell-derived trypomastigotes. Low total vanadium uptake by parasites and preferential accumulation in the soluble proteins fraction were determined. A trypanocide effect was observed when incubating epimastigotes with 10 × IC50 values of [VVO(IN-2H)(L2-H)] and the generation of ROS after treatments was suggested. Fluorescence competition measurements with DNA:ethidium bromide adduct showed a moderate DNA interaction of the complexes. In vivo toxicity study on C. elegans model showed no toxicity up to a 100 μM concentration of [VVO(IN-2H)(L2-H)]. This compound could be considered a prospective anti-T. cruzi agent that deserves further research.
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Affiliation(s)
- Gonzalo Scalese
- Área Química Inorgánica, Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay;
- Programa de Posgrados de la Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay
| | - Ignacio Machado
- Área Química Analítica, Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay;
| | - Gustavo Salinas
- Worm Biology Lab, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay;
- Departamento de Biociencias, Facultad de Química, Montevideo 11800, Uruguay
| | - Leticia Pérez-Díaz
- Laboratorio de Interacciones Moleculares, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay;
| | - Dinorah Gambino
- Área Química Inorgánica, Facultad de Química, Universidad de la República, Montevideo 11800, Uruguay;
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3
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Nica S, Buchholz A, Görls H, Plass W. Hydrazone‐Based Ligand with Pyrrolidine Donor and Its Molybdenum(VI) Complex: Synthesis, Structure, and Reactivity. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Simona Nica
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Germany
- Present address: Institute of Organic Chemistry Romanian Academy Splaiul Independentei, no. 202B 060023 Bucharest Romania
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Germany
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4
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Ghosh T, Mondal B. A Study on the Electronic Effect of para-substituents in the Aryloxy Ring of the Hydrazone Ligands on the Vanadium Centre in the mixed-ligand [VIVO(ONO)(NN)] families. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823407x227480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The hyperfine coupling constant (Aıı) and the redox potential (E½) values of vanadium(IV) in its mixed-ligand hydrazone complexes [VIVO(L)(bipy)], 1–4 and [VIVO(L)(phen)], 5–8, [which have been synthesised from the reaction of VIVO(acac)2 with the hydrazone ligand H2L in the presence of equimolar amount of 2,2′-bipyridine (bipy) or 1,10-phenanthroline (phen) in methanol], exhibit a linear relationship with the Hammett constant (σ) of the para-substituents in the aryloxy ring of the hydrazone ligands.
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Affiliation(s)
- Tapas Ghosh
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata - 700118, India
| | - Bipul Mondal
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata - 700118, India
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5
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Mohammadnezhad G, Akintola O, Buchholz A, Görls H, Plass W. Probing the chirality of oxidovanadium( v) centers in complexes with tridentate sugar Schiff-base ligands: solid-state and solution behavior. NEW J CHEM 2019. [DOI: 10.1039/c9nj02881a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Configurations of oxidovanadium centers in diastereomeric complexes with chiral sugar ligands are assigned and in the solid state triggered by the coordination number at the vanadium center through the steric requirements of the chelate ligand.
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Affiliation(s)
| | - Oluseun Akintola
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität, Jena
- 07743 Jena
- Germany
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität, Jena
- 07743 Jena
- Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität, Jena
- 07743 Jena
- Germany
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie
- Friedrich-Schiller-Universität, Jena
- 07743 Jena
- Germany
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6
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Biswas N, Bera S, Sepay N, Mukhopadhyay TK, Acharya K, Ghosh S, Acharyya S, Biswas AK, Drew MGB, Ghosh T. Synthesis, characterization, and cytotoxic and antimicrobial activities of mixed-ligand hydrazone complexes of variable valence VO z+ ( z = 2, 3). NEW J CHEM 2019. [DOI: 10.1039/c9nj04171k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Mixed-ligand complexes of VO2+ and VO3+ motifs incorporating a family of hydrazone ligands were reported, which exhibited promising cytotoxic activity against lung cancer cell line and antimicrobial activity against four pathogenic bacterial stains.
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Affiliation(s)
- Nirmalendu Biswas
- Post Graduate Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata-700118
- India
| | - Sachinath Bera
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Nayim Sepay
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Titas Kumar Mukhopadhyay
- Department of Spectroscopy
- Indian Association for the Cultivation of Science
- Jadavpur
- Kolkata-700032
- India
| | | | - Sandipta Ghosh
- Department of Botany
- University of Calcutta
- Kolkata-700019
- India
| | - Swarnali Acharyya
- Department of Pathology and Cell Biology
- Columbia University
- New York
- USA
| | - Anup Kumar Biswas
- Herbert Irving Comprehensive Cancer Centre
- Columbia University
- New York
- USA
| | | | - Tapas Ghosh
- Post Graduate Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata-700118
- India
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7
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New heteroleptic oxidovanadium(V) complexes: synthesis, characterization and biological evaluation as potential agents against Trypanosoma cruzi. J Biol Inorg Chem 2018; 23:1265-1281. [DOI: 10.1007/s00775-018-1613-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 08/28/2018] [Indexed: 10/28/2022]
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8
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Wang FM. Mononuclear oxovanadium(Iv) complex containing VO(ONS) basic core: Synthesis, structure, thermal gravimetric analysis, and catalytic property. INORG NANO-MET CHEM 2017. [DOI: 10.1080/24701556.2017.1284125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Fu-Ming Wang
- Key Laboratory of Coordination Chemistry and Functional Materials in Universities of Shandong, Department of Chemistry, Dezhou University, Dezhou Shandong, P. R. China
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9
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Inamdar P, Angappan S. DNA binding behaviour of mixed ligand vanadium(V) complex based on novel tridentate hydrazone and benzhydroxamic acid ligand systems. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3573] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Poonam Inamdar
- Department of Chemistry; School of Advanced Sciences, VIT University; Vellore India
| | - Sheela Angappan
- Department of Chemistry; School of Advanced Sciences, VIT University; Vellore India
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10
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Biswas N, Patra D, Mondal B, Drew MG, Ghosh T. Synthesis of mixed-ligand complexes of VO2+ and VO3+ incorporating hydrazone, 1,10-phenanthroline and 8-hydroxyquinoline. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1107054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Nirmalendu Biswas
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Kolkata, India
| | - Debashis Patra
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Kolkata, India
| | - Bipul Mondal
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Kolkata, India
| | | | - Tapas Ghosh
- Department of Chemistry, Ramakrishna Mission Vivekananda Centenary College, Kolkata, India
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11
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12
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Sheng GH, Han YW, Xu Y, Hu XM, You ZL, Zhu HL. Synthesis and structural characterization of oxovanadium(V) complexes with mixed tridentate benzohydrazone and bidentate no ligands. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415080047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Nica S, Rudolph M, Lippold I, Buchholz A, Görls H, Plass W. Vanadium(V) complex with Schiff-base ligand containing a flexible amino side chain: Synthesis, structure and reactivity. J Inorg Biochem 2015; 147:193-203. [DOI: 10.1016/j.jinorgbio.2015.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/16/2015] [Accepted: 02/16/2015] [Indexed: 10/24/2022]
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14
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Scalese G, Benítez J, Rostán S, Correia I, Bradford L, Vieites M, Minini L, Merlino A, Coitiño EL, Birriel E, Varela J, Cerecetto H, González M, Pessoa JC, Gambino D. Expanding the family of heteroleptic oxidovanadium(IV) compounds with salicylaldehyde semicarbazones and polypyridyl ligands showing anti-Trypanosoma cruzi activity. J Inorg Biochem 2015; 147:116-25. [PMID: 25824466 DOI: 10.1016/j.jinorgbio.2015.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/01/2015] [Accepted: 03/04/2015] [Indexed: 01/01/2023]
Abstract
Searching for prospective vanadium-based drugs for the treatment of Chagas disease, a new series of heteroleptic [V(IV)O(L-2H)(NN)] compounds was developed by including the lipophilic 3,4,7,8-tetramethyl-1,10-phenanthroline (tmp) NN ligand and seven tridentate salicylaldehyde semicarbazone derivatives (L1-L7). The compounds were characterized in the solid state and in solution. EPR spectroscopy suggests that the NN ligand is bidentate bound through both nitrogen donor atoms in an axial-equatorial mode. The EPR and (51)V-NMR spectra of aerated solutions at room temperature indicate that the compounds are stable to hydrolysis and that no significant oxidation of V(IV) to V(V) takes place at least in 24h. The complexes are more active in vitro against Trypanosoma cruzi, the parasite responsible for Chagas disease, than the reference drug Nifurtimox and most of them are more active than previously reported [V(IV)O(L-2H)(NN)] complexes of other NN co-ligands. Selectivity towards the parasite was analyzed using J-774 murine macrophages as mammalian cell model. Due to both, high activity and high selectivity, L2, L4, L5 and L7 complexes could be considered new hits for further drug development. Lipophilicity probably plays a relevant role in the bioactivity of the new compounds. The [V(IV)O(L-2H)(NN)] compounds were designed aiming DNA as potential molecular target. Therefore, the novel L1-L7 tmp complexes were screened by computational modeling, comparing their DNA-binding features with those of previously reported [V(IV)O(L-2H)(NN)] compounds with different NN co-ligands. Whereas all the complexes interact well with DNA, with binding modes and strength tuned in different extents by the NN and semicarbazone co-ligands, molecular docking suggests that the observed anti-T. cruzi activity cannot be explained upon DNA intercalation as the sole mechanism of action.
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Affiliation(s)
- Gonzalo Scalese
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
| | - Julio Benítez
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
| | - Santiago Rostán
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
| | - Isabel Correia
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Lara Bradford
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
| | - Marisol Vieites
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay
| | - Lucía Minini
- Laboratorio de Química Teórica y Computacional, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Uruguay
| | - Alicia Merlino
- Laboratorio de Química Teórica y Computacional, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Uruguay
| | - E Laura Coitiño
- Laboratorio de Química Teórica y Computacional, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Uruguay
| | - Estefania Birriel
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias-Facultad de Química, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - Javier Varela
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias-Facultad de Química, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - Hugo Cerecetto
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias-Facultad de Química, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - Mercedes González
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias-Facultad de Química, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay
| | - João Costa Pessoa
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Dinorah Gambino
- Cátedra de Química Inorgánica, Facultad de Química, Universidad de la República, Gral. Flores 2124, 11800 Montevideo, Uruguay.
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15
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Patra D, Biswas N, Kumari B, Das P, Sepay N, Chatterjee S, Drew MGB, Ghosh T. A family of mixed-ligand oxidovanadium(v) complexes with aroylhydrazone ligands: a combined experimental and computational study on the electronic effects of para substituents of hydrazone ligands on the electronic properties, DNA binding and nuclease activities. RSC Adv 2015. [DOI: 10.1039/c5ra17844d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Substituents at 5-position in the acetophenone ring of the hydrazone ligands in a family of mixed-ligand oxidovanadium(v) complexes show marked influence on the electronic properties, DNA binding ability and nuclease activity.
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Affiliation(s)
- Debashis Patra
- Post Graduate Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata-700118
- India
| | - Nirmalendu Biswas
- Post Graduate Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata-700118
- India
| | - Bhavini Kumari
- Department of Chemistry
- Indian Institute of Technology Patna
- India
| | - Prolay Das
- Department of Chemistry
- Indian Institute of Technology Patna
- India
| | - Nayim Sepay
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Shamba Chatterjee
- Department of Organic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | | | - Tapas Ghosh
- Post Graduate Department of Chemistry
- Ramakrishna Mission Vivekananda Centenary College
- Kolkata-700118
- India
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16
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Vanadium complexes with side chain functionalized N-salicylidene hydrazides: Hydrogen-bonding relays as structural directive for supramolecular interactions. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.03.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Bubrin M, Schweinfurth D, Ehret F, Záliš S, Kvapilová H, Fiedler J, Zeng Q, Hartl F, Kaim W. Structure and Spectroelectrochemical Response of Arene–Ruthenium and Arene–Osmium Complexes with Potentially Hemilabile Noninnocent Ligands. Organometallics 2014. [DOI: 10.1021/om5002815] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martina Bubrin
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - David Schweinfurth
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, D- 14195 Berlin, Germany
| | - Fabian Ehret
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Stanislav Záliš
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, CZ-18223 Prague, Czech Republic
| | - Hana Kvapilová
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, CZ-18223 Prague, Czech Republic
| | - Jan Fiedler
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, CZ-18223 Prague, Czech Republic
| | - Qiang Zeng
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - František Hartl
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
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18
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Sutradhar M, Pombeiro AJ. Coordination chemistry of non-oxido, oxido and dioxidovanadium(IV/V) complexes with azine fragment ligands. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.01.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Patra D, Biswas N, Mondal B, Mitra P, Drew MGB, Ghosh T. Electronic effects of para substituents of 2-hydroxybenzaldehyde co-ligands in a family of hydrazonato-oxidovanadium(v) complexes. RSC Adv 2014. [DOI: 10.1039/c4ra00139g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Burkhardt A, Buchholz A, Görls H, Plass W. Intramolecular Hydrogen Bonding of a Chloride Acceptor Supported by a Dinuclear Nickel(II) Complex withN-Salicylidene Hydrazide Ligand: Crystal Structure and Magnetic Properties. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300418] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Fernández M, Becco L, Correia I, Benítez J, Piro OE, Echeverria GA, Medeiros A, Comini M, Lavaggi ML, González M, Cerecetto H, Moreno V, Pessoa JC, Garat B, Gambino D. Oxidovanadium(IV) and dioxidovanadium(V) complexes of tridentate salicylaldehyde semicarbazones: Searching for prospective antitrypanosomal agents. J Inorg Biochem 2013; 127:150-60. [DOI: 10.1016/j.jinorgbio.2013.02.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/20/2013] [Accepted: 02/20/2013] [Indexed: 12/29/2022]
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22
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Yu J. Crystal structures of new isostructural oxovanadium(V) complexes with hydrazone ligands. J STRUCT CHEM+ 2013. [DOI: 10.1134/s0022476613030177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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New oxidovanadium(IV) N -acylhydrazone complexes: Promising antileishmanial and antitrypanosomal agents. Eur J Med Chem 2013; 62:20-7. [DOI: 10.1016/j.ejmech.2012.12.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 11/07/2012] [Accepted: 12/19/2012] [Indexed: 12/20/2022]
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24
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Mohammadnezhad G, Böhme M, Geibig D, Burkhardt A, Görls H, Plass W. Chiral vanadium(v) complexes with 2-aminoglucose Schiff-base ligands and their solution configurations: synthesis, structures, and DFT calculations. Dalton Trans 2013; 42:11812-23. [DOI: 10.1039/c3dt50890k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Fernández M, Varela J, Correia I, Birriel E, Castiglioni J, Moreno V, Costa Pessoa J, Cerecetto H, González M, Gambino D. A new series of heteroleptic oxidovanadium(iv) compounds with phenanthroline-derived co-ligands: selective Trypanosoma cruzi growth inhibitors. Dalton Trans 2013; 42:11900-11. [DOI: 10.1039/c3dt50512j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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26
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Patra D, Biswas N, Mondal B, Drew MG, Ghosh T. Chemistry of mixed-ligand complexes with variable valence VOz+ (z=2, 3) incorporating pentadentate hydrazone ligands. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.08.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Peng SJ, Zeng JL, Wei C, Fang F. Synthesis and Crystal Structure of a Phenolato-bridged Dinuclear Oxovanadium(V) Complex Derived from N’-[1-(2-Hydroxyphenyl)ethylidene]-1H-indole-3-carbohydrazide. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/15533174.2011.591343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- San-Jun Peng
- a College of Chemistry and Biological Engineering , Changsha University of Science and Technology , Changsha, Hunan, P. R. China
| | - Ju-Lan Zeng
- a College of Chemistry and Biological Engineering , Changsha University of Science and Technology , Changsha, Hunan, P. R. China
| | - Chao Wei
- a College of Chemistry and Biological Engineering , Changsha University of Science and Technology , Changsha, Hunan, P. R. China
| | - Fang Fang
- a College of Chemistry and Biological Engineering , Changsha University of Science and Technology , Changsha, Hunan, P. R. China
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28
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Plass W. Chiral and supramolecular model complexes for vanadium haloperoxidases: Host–guest systems and hydrogen bonding relays for vanadate species. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.04.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Fenn A, Wächtler M, Breitzke H, Buchholz A, Lippold I, Plass W, Buntkowsky G. A simple method for analyzing 51V solid-state NMR spectra of complex systems. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2011; 40:60-65. [PMID: 21601435 DOI: 10.1016/j.ssnmr.2011.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 02/14/2011] [Accepted: 05/03/2011] [Indexed: 05/30/2023]
Abstract
Five vanadium complexes as models for biological systems were investigated using (51)V-MAS-NMR spectroscopy. All spectra show an uncommon line shape, which can be attributed to a shorter relaxation time of the satellite transition in contrast to the central one. A method for the reliable analysis of such kind of spectra is presented for the first time and the most important NMR parameters of the investigated complexes (quadrupolar coupling constant C(Q), asymmetry of the EFG tensor η(Q), isotropic chemical shift δ(iso), chemical shift anisotropy δ(σ) and asymmetry of the CSA tensor η(σ)) are presented. These results are of particular importance with respect to the analysis of the (51)V-MAS-NMR spectra of vanadium moieties in biological matrices such as vanadium chloroperoxidase, which show hitherto unexplained low intensity of the satellite sideband pattern.
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Affiliation(s)
- Annika Fenn
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Jena, Germany
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30
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Wang FM. [3-Chloro-N'-(2-oxidonaphthalen-1-yl-methylidene)benzohydrazidato]methanol(methanolato)oxidovanadium(V). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1254. [PMID: 22065698 PMCID: PMC3200794 DOI: 10.1107/s1600536811032703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 08/12/2011] [Indexed: 11/11/2022]
Abstract
In the title complex, [V(C(18)H(11)ClN(2)O(2))(CH(3)O)O(CH(3)OH)], the V(V) ion is coordinated by a tridendate 3-chloro-N'-(2-oxidonaphthalen-1-ylmethylidene)benzohydrazidate ligand, one oxido ligand and by O atoms from a methanol and a methoxide ligand, forming a distorted octa-hedral geometry. The dihedral angle between the benzene ring and the naphthyl-ene ring system is 6.4 (3)°. The deviation of the V(V) ion from the plane defined by the three donor atoms of the tridentate ligand and the meth-oxy O atom towards the oxido O atom is 0.323 (2) Å. In the crystal, pairs of inter-molecular O-H⋯N hydrogen bonds form centrosymmetric dimers.
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Affiliation(s)
- Fu-Ming Wang
- Department of Chemistry, Dezhou University, Dezhou Shandong 253023, People's Republic of China
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31
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Monfared HH, Alavi S, Farrokhi A, Vahedpour M, Mayer P. A novel 2D vanadium(V)-isonicotinohydrazide coordination polymer, C15H16AgN4O8V: Synthesis, structure, catalytic activity and DFT calculation. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.04.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Searching for gallium bioactive compounds: Gallium(III) complexes of tridentate salicylaldehyde semicarbazone derivatives. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.02.037] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Wang FM. [N'-(5-Bromo-2-oxidobenzyl-idene-κO)-2-chloro-benzohydrazidato-κN',O](methanol-κO)(methano-lato-κO)oxido-vanadium(V). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m433-4. [PMID: 21753958 PMCID: PMC3099792 DOI: 10.1107/s1600536811008774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 03/08/2011] [Indexed: 11/13/2022]
Abstract
The VV atom in the title complex, [V(C14H8BrClN2O2)(CH3O)O(CH3OH)], is six-coordinated by one phenolate O, one imine N and one enolic O atom of the hydrazone ligand, one oxide O atom, one methanol O atom and one methoxide O atom in a distorted octahedral geometry. The dihedral angle between the two benzene rings of the hydrazone ligand is 13.2 (3)°. The deviation of the V atom towards the oxide O atom from the plane defined by the three donor atoms of the hydrazone ligand and the methoxy O atom is 0.318 (2) Å. Bond lengths are comparable with those observed in similar oxidovanadium(V) complexes with hydrazone ligands. In the crystal, pairs of molecules are linked through intermolecular O—H⋯N hydrogen bonds, forming dimers.
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Affiliation(s)
- Fu-Ming Wang
- Department of Chemistry, Dezhou University, Dezhou Shandong 253023, People's Republic of China
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34
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Spielberg ET, Plass W. Copper(II) and Zinc(II) Complexes with a Photoactive Bridging Ligand Based on Carbazole: Synthesis, Structures, Electronic and Magnetic Properties. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201000970] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Benítez J, Becco L, Correia I, Leal SM, Guiset H, Pessoa JC, Lorenzo J, Tanco S, Escobar P, Moreno V, Garat B, Gambino D. Vanadium polypyridyl compounds as potential antiparasitic and antitumoral agents: new achievements. J Inorg Biochem 2010; 105:303-12. [PMID: 21194632 DOI: 10.1016/j.jinorgbio.2010.11.001] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Revised: 10/30/2010] [Accepted: 11/02/2010] [Indexed: 11/26/2022]
Abstract
In the search for new therapeutic tools against diseases produced by kinetoplastid parasites five vanadyl complexes, [V(IV)O(L-2H)(phen)], including 1,10-phenanthroline (phen) and tridentate salicylaldehyde semicarbazone derivatives as ligands have been synthesized and characterized in the solid state and in solution by using different techniques. EPR suggested a distorted octahedral geometry with the tridentate semicarbazone occupying three equatorial positions and phen coordinated in an equatorial/axial mode. The compounds were evaluated in vitro on epimastigotes of Trypanosoma cruzi, causative agent of Chagas disease, Leishmania panamensis and Leishmania chagasi and on tumor cells. The complexes showed higher in vitro anti-trypanosomal activities than the reference drug Nifurtimox (IC(50) values in the range 1.6-3.8 μM) and increased activities in respect to the free semicarbazone ligands. In vitro activity on promastigote and amastigote forms of Leishmania showed interesting results. The compounds [VO(L1-2H)(phen)] and [VO(L3-2H)(phen)], where L1 = 2-hydroxybenzaldehyde semicarbazone and L3 = 2-hydroxy-3-methoxybenzaldehyde semicarbazone, resulted active (IC(50) 2.74 and 2.75 μM, respectively, on promastigotes of L. panamensis; IC(50) 19.52 and 20.75 μM, respectively, on intracellular amastigotes of L. panamensis) and showed low toxicity on THP-1 mammalian cells (IC(50) 188.55 and 88.13 μM, respectively). In addition, the complexes showed cytotoxicity on human promyelocytic leukemia HL-60 cells with IC(50) values of the same order of magnitude as cisplatin. The interaction of the complexes with DNA was demonstrated by different techniques, suggesting that this biomolecule could be a potential target either in the parasites or in tumor cells.
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Affiliation(s)
- Julio Benítez
- Facultad de Química, UDELAR, Gral. Flores 2124, 11800 Montevideo, Uruguay
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36
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Monfared HH, Bikas R, Mayer P. Homogeneous green catalysts for olefin oxidation by mono oxovanadium(V) complexes of hydrazone Schiff base ligands. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.04.046] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Maurya MR, Arya A, Kumar A, Kuznetsov ML, Avecilla F, Costa Pessoa J. Polymer-Bound Oxidovanadium(IV) and Dioxidovanadium(V) Complexes As Catalysts for the Oxidative Desulfurization of Model Fuel Diesel. Inorg Chem 2010; 49:6586-600. [DOI: 10.1021/ic1004209] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Aarti Arya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Amit Kumar
- Centro Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Maxim L. Kuznetsov
- Centro Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Fernando Avecilla
- Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain
| | - João Costa Pessoa
- Centro Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av Rovisco Pais, 1049-001 Lisboa, Portugal
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38
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Fenn A, Wächtler M, Gutmann T, Breitzke H, Buchholz A, Lippold I, Plass W, Buntkowsky G. Correlations between (51)V solid-state NMR parameters and chemical structure of vanadium (V) complexes as models for related metalloproteins and catalysts. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2009; 36:192-201. [PMID: 20045295 DOI: 10.1016/j.ssnmr.2009.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 11/23/2009] [Accepted: 11/25/2009] [Indexed: 05/28/2023]
Abstract
The parameters describing the quadrupolar and CSA interactions of 51V solid-state MAS NMR investigations of model complexes mimicking vanadoenzymes as well as vanadium containing catalysts and enzyme complexes are interpreted with respect to the chemical structure. The interpretation is based on the data of 15 vanadium complexes including two new complexes with previously unpublished data and 13 complexes with data previously published by us. Correlations between the chemical structure and the 51V solid-state NMR data of this class of compounds have been established. Especially for the isotropic chemical shift delta(iso) and the chemical shift anisotropy delta(sigma), correlations with specific structural features like the coordination number of the vanadium atom, the number of coordinating nitrogens, the number of oxygen atoms and the chemical surrounding of the complex could be established for these compounds. Moreover, quantitative correlations between the solid-state NMR parameters and specific bond angles and bond lengths have been obtained. Our results can be of particular interest for future investigations concerning the structure and the mode of action of related vanadoenzymes and vanadate protein assemblies, including the use of vanadate adducts as transition state analogs for phosphate metabolizing systems.
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Affiliation(s)
- Annika Fenn
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
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39
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Zhao HY, Xing YH, Cao YZ, Li ZP, Wei DM, Zeng XQ, Ge MF. Synthesis, structure and properties of three new oxidovanadium complexes containing a tridentate salicylaldehydeglycine. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Gutmann T, Schweitzer A, Wächtler M, Breitzke H, Buchholz A, Plass W, Buntkowsky G. DFT Calculations of 51V Solid-State NMR Parameters of Vanadium(V) Model Complexes. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zpch.2008.5401] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Two cis-dioxovanadium(V) complexes and three monooxovanadium(V) complexes with different coordination numbers and ligand spheres, serving as model complexes for vanadium haloperoxidases, were studied by 51V solid-state NMR spectroscopy. The most important 51V solid-state NMR parameters (quadrupolar coupling constant C
Q
, asymmetry of the EFG tensor η
Q
, isotropic chemical shift δ
iso
, chemical shift anisotropy δ
σ
, asymmetry of the CSA tensor η
σ
and the Euler angles α, β and γ) describing the quadrupolar and chemical shift anisotropy interactions were determined theoretically with DFT methods employing the B3LYP functional and experimentally using genetic fitting algorithms. Calculations of δ
iso
values were treated with different referencing values of VOCl3 computed with different-sized basis sets using the “counterpoise method”. The calculated C
Q
values were discussed in terms of the quadrupolar moment Q. Absolute tensor orientations of CSA and EFG tensors were computed by DFT. These orientations were found to correlate to structural features of the model complexes.
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41
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Mono- and dinuclear copper(II) complexes with meta-phenylene-bridging ligands: Synthesis, structure and magnetic properties. Polyhedron 2009. [DOI: 10.1016/j.poly.2008.11.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Benítez J, Guggeri L, Tomaz I, Arrambide G, Navarro M, Costa Pessoa J, Garat B, Gambino D. Design of vanadium mixed-ligand complexes as potential anti-protozoa agents. J Inorg Biochem 2009; 103:609-16. [DOI: 10.1016/j.jinorgbio.2008.10.018] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2008] [Revised: 10/13/2008] [Accepted: 10/20/2008] [Indexed: 01/04/2023]
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43
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Lippold I, Vlay K, Görls H, Plass W. Cyclodextrin inclusion compounds of vanadium complexes: Structural characterization and catalytic sulfoxidation. J Inorg Biochem 2009; 103:480-6. [DOI: 10.1016/j.jinorgbio.2008.12.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Revised: 12/14/2008] [Accepted: 12/18/2008] [Indexed: 11/17/2022]
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44
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Adão P, Costa Pessoa J, Henriques RT, Kuznetsov ML, Avecilla F, Maurya MR, Kumar U, Correia I. Synthesis, Characterization, and Application of Vanadium−Salan Complexes in Oxygen Transfer Reactions. Inorg Chem 2009; 48:3542-61. [DOI: 10.1021/ic8017985] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pedro Adão
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - João Costa Pessoa
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Rui T. Henriques
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Fernando Avecilla
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Mannar R. Maurya
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Umesh Kumar
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Isabel Correia
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
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45
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Chiral oxovanadium(V) complexes with a 6-amino-6-deoxyglucopyranoside-based Schiff-base ligand: Catalytic asymmetric sulfoxidation and structural characterization. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcata.2008.10.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Wächtler M, Schweitzer A, Gutmann T, Breitzke H, Buntkowsky G. Efficient analysis of (51)V solid-state MAS NMR spectra using genetic algorithms. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2009; 35:37-48. [PMID: 19128946 DOI: 10.1016/j.ssnmr.2008.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2008] [Revised: 11/05/2008] [Accepted: 11/11/2008] [Indexed: 05/27/2023]
Abstract
A program for iterative fitting procedures to determine the NMR parameters from (51)V solid-state MAS NMR spectra was developed. It contains options to use genetic algorithms and downhill-simplex optimizing procedures to extract the optimal parameter sets, which describe our spectra. As computational kernel the SIMPSON program is employed. Other kernels like SPINEVOLUTION are easily incorporable. The algorithms are checked for their suitability for the present optimization problem and optimal simulation conditions are determined, with the focus on minimal processing time. The procedure leads to a very good agreement between experimental and simulated spectra in a passable period of time. First results for spectra of model compounds for the active site of vanadium haloperoxidases are presented.
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Affiliation(s)
- Maria Wächtler
- Institut für Physikalische Chemie, Friedrich-Schiller-Universität, Jena, Helmholtzweg 4, D-07743 Jena, Germany
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47
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Debel R, Buchholz A, Plass W. Structural and Catalytic Aspects of Dioxomolybdenum(VI) Complexes with ω-Hydroxy FunctionalizedN-Salicylidene Hydrazides. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800231] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Synthesis and Characterizations of Dinuclear Dioxomolybdenum(VI) Complexes with Thiocarbohydrazides of Salicylaldehyde, Bridged by 4,4'-Dipyridyl or Its Derivatives. B KOREAN CHEM SOC 2008. [DOI: 10.5012/bkcs.2008.29.9.1819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Synthesis and Characterization of Dioxomolybdenum(VI) Complexes with Tridentate O,N,S-Donor Schiff Bases and 4,4'-Bipyridyl Ligand. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2008. [DOI: 10.5012/jkcs.2008.52.4.439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Nica S, Buchholz A, Rudolph M, Schweitzer A, Wächtler M, Breitzke H, Buntkowsky G, Plass W. Mixed-Ligand Oxidovanadium(V) Complexes withN′-Salicylidenehydrazides: Synthesis, Structure, and51V Solid-State MAS NMR Investigation. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800063] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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