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Chuprin AS, Pavlov AA, Vologzhanina AV, Dorovatovskii PV, Makarenkov AV, Ol'shevskaya VA, Dudkin SV, Voloshin YZ. Multistep synthesis and X-ray structures of carboxyl-terminated hybrid iron(II) phthalocyaninatoclathrochelates and their postsynthetic transformation into polytopic carboranyl-containing derivatives. Dalton Trans 2023; 52:3884-3895. [PMID: 36877091 DOI: 10.1039/d3dt00076a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A multistep general synthetic strategy towards polytopic carboranyl-containing (semi)clathrochelate metal complexes, based on the template synthesis, transmetallation, amide condensation and 1,3-dipolar cycloaddition reactions, is developed. Their mono(semi)clathrochelate precursors with a single reactive group were obtained using a transmetallation of the triethylantimony-capped macrobicyclic precursor. The thus obtained carboxyl-terminated iron(II) semiclathrochelate underwent a macrobicyclization with zirconium(IV) phthalocyaninate to form the corresponding phthalocyaninatoclathrochelate. The direct one-pot template condensation of the suitable chelating and cross-linking ligand synthons on the Fe2+ ion as a matrix was also used for its preparation. Further amide condensation of the aforementioned semiclathrochelate and hybrid complexes with propargylamine in the presence of carbonyldiimidazole gave the (pseudo)cage derivatives with a terminal CC bond. Their "click" reaction with an appropriate carboranylmethyl azide afforded the ditopic carboranosemiclathrochelates and the tritopic carboranyl-containing phthalocyaninatoclathrochelates with a flexible spacer fragment between their polyhedral entities. The obtained new complexes were characterized using elemental analysis, MALDI-TOF mass spectrometry, multinuclear NMR, and UV-vis spectroscopy, and by single crystal X-ray diffraction experiments. Their FeN6-coordination polyhedra show a truncated trigonal-pyramidal geometry, while the cross-linking heptacoordinate Zr4+ or Hf4+ cations in the hybrid compounds form the MIVN4O3-coordination polyhedra with the geometry of a capped trigonal prism.
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Affiliation(s)
- Alexander S Chuprin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Alexander A Pavlov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
- BMSTU Center of National Technological Initiative "Digital Material Science: New Material and Substances", Bauman Moscow State Technical University, 2nd Baumanskaya st. 5, 105005, Moscow, Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Pavel V Dorovatovskii
- National Research Center Kurchatov Institute, 1 Kurchatova pl., 123098, Moscow, Russia
| | - Anton V Makarenkov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Valentina A Ol'shevskaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Semyon V Dudkin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
| | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia.
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
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Multistep synthesis, reactivity and X-ray structure of the anisole-terminated iron(II) polyhalogenoclathrochelates and their monoribbed-functionalized macrobicyclic derivatives. TRANSIT METAL CHEM 2022. [DOI: 10.1007/s11243-022-00515-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2022]
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3
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Limarev IP, Zelinskii GE, Belova SA, Dorovatovskii PV, Vologzhanina AV, Lebed EG, Voloshin YZ. Monoribbed‐functionalized macrobicyclic iron(
II
) complexes decorated with terminal reactive and vector groups: synthetic strategy towards, chemical transformations and structural characterization. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilya P. Limarev
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr. 119991 Moscow Russia
| | - Genrikh E. Zelinskii
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr. 119991 Moscow Russia
| | - Svetlana A. Belova
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr. 119991 Moscow Russia
| | | | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
| | - Ekaterina G. Lebed
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr. 119991 Moscow Russia
| | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr. 119991 Moscow Russia
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Chuprin AS, Dudkin SV, Belova SA, Lebed EG, Dorovatovskii PV, Vologzhanina AV, Voloshin YZ. Synthesis and reactivity of the apically functionalized (pseudo)macrobicyclic iron( ii) tris-dioximates and their hybrid phthalocyaninatoclathrochelate derivatives comprising reactive and vector terminal groups. NEW J CHEM 2022. [DOI: 10.1039/d2nj01560a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron(ii) phthalocyaninatoclathrochelates functionalized with terminal reactive formyl group were prepared. Their post-synthetic functionalization gave those with vector pharmacophoric fragment.
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Affiliation(s)
- Alexander S. Chuprin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
| | - Semyon V. Dudkin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
| | - Svetlana A. Belova
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
| | - Ekaterina G. Lebed
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
| | - Pavel V. Dorovatovskii
- National Research Center “Kurchatov Institute”, 1 Acad. Kurchatov Sq., 123182 Moscow, Russian Federation
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
| | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova st., 119991 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
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Zelinskii GE, Limarev IP, Vologzhanina AV, Olshevskaya VA, Makarenkov AV, Dorovatovskii PV, Chuprin AS, Vershinin MA, Dudkin SV, Voloshin YZ. Synthesis and Structure of the Bis- and Tris-Polyhedral Hybrid Carboranoclathrochelates with Functionalizing Biorelevant Substituents-The Derivatives of Propargylamine Iron(II) Clathrochelates with Terminal Triple C≡C Bond(s). Molecules 2021; 26:3635. [PMID: 34198621 PMCID: PMC8232327 DOI: 10.3390/molecules26123635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/09/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022] Open
Abstract
A synthetic strategy for obtaining structurally flexible hybrid iron(II) carboranoclatrochelates functionalized with biorelevant groups, based on a combination of a 1,3-dipolar cycloaddition reaction with nucleophilic substitution of an appropriate chloroclathrochelate precursor, was developed. In its first stage, a stepwise substitution of the dichloroclathrochelate precursor with amine N-nucleophiles of different natures in various solvents was performed. One of its two chlorine atoms with morpholine or diethylamine in dichloromethane gave reactive monohalogenoclathrochelate complexes functionalized with abiorelevant substituents. Further nucleophilic substitution of their remaining chlorine atoms with propargylamine in DMF led to morpholine- and diethylamine-functionalized monopropargylamine cage complexes, the molecules of which contain the single terminal C≡C bond. Their "click" 1,3-cycloaddition reactions in toluene with ortho-carborane-(1)-methylazide catalyzed by copper(II) acetate gave spacer-containing di- and tritopic iron(II) carboranoclatrochelates formed by a covalent linking between their different polyhedral(cage) fragments. The obtained complexes were characterized using elemental analysis, MALDI-TOF mass, UV-Vis, 1H, 1H{11B}, 11B, 11B{1H}, 19F{1H} and 13C{1H}-NMR spectra, and by a single crystal synchrotron X-ray diffraction experiment for the diethylamine-functionalized iron(II) carboranoclathrochelate. Its encapsulated iron(II) ion is situated almost in the center of the FeN6-coordination polyhedron possessing a geometry intermediate between a trigonal prism and a trigonal antiprism with a distortion angle φ of approximately 28°. Conformation of this hybrid molecule is strongly affected by its intramolecular dihydrogen bonding: a flexibility of the carborane-terminated ribbed substituent allowed the formation of numerous C-H…H-B intramolecular interactions. The H(C) atom of this carborane core also forms the intermolecular C-H…F-B interaction with an adjacent carboranoclathrochelate molecule. The N-H…N intermolecular interaction between the diethylamine group of one hybrid molecule and the heterocyclic five-membered 1H-[1,2,3]-triazolyl fragment of the second molecule of this type caused formation of H-bonded carboranoclathrochelate dimers in the X-rayed crystal.
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Affiliation(s)
- Genrikh E. Zelinskii
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii pr., 31, 119991 Moscow, Russia; (G.E.Z.); (I.P.L.)
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Ilya P. Limarev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii pr., 31, 119991 Moscow, Russia; (G.E.Z.); (I.P.L.)
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Valentina A. Olshevskaya
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Anton V. Makarenkov
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | | | - Alexander S. Chuprin
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Mikhail A. Vershinin
- Nikolaev Institute of Inorganic Chemistry of the Siberian Branch of the Russian Academy of Sciences, 3 Lavrentieva prosp., 630090 Novosibirsk, Russia;
| | - Semyon V. Dudkin
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
| | - Yan Z. Voloshin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii pr., 31, 119991 Moscow, Russia; (G.E.Z.); (I.P.L.)
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia; (A.V.V.); (V.A.O.); (A.V.M.); (A.S.C.); (S.V.D.)
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6
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Selin RO, Klemt I, Chernii VY, Losytskyy MY, Chernii S, Mular A, Gumienna-Kontecka E, Kovalska VB, Voloshin YZ, Vologzhanina AV, Dorovatovskii PV, Mokhir A. Synthesis and spectral characterization of the first fluorescein-tagged iron(ii) clathrochelates, their supramolecular interactions with globular proteins, and cellular uptake. RSC Adv 2021; 11:8163-8177. [PMID: 35423299 PMCID: PMC8695075 DOI: 10.1039/d0ra10502c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/02/2021] [Indexed: 01/29/2023] Open
Abstract
A fluorescein-tagged iron(ii) cage complex was obtained in a moderate total yield using a two-step synthetic procedure starting from its propargylamine-containing clathrochelate precursor. An 11-fold decrease in fluorescence quantum yield is observed in passing from the given fluorescein-based dye to its clathrochelate derivative. An excitation energy transfer from the terminal fluorescent group of the macrobicyclic molecule to its quasiaromatic highly π-conjugated clathrochelate framework can explain this effect. The kinetics of the hydrolysis of the acetyl groups of acetylated fluorescein azide and its clathrochelate derivative in the presence of one equivalent of BSA evidenced no strong supramolecular host-guest interactions between BSA and the tested compounds. Study of a chemical stability of the deacetylated iron(ii) clathrochelate suggested the formation of a supramolecular 1 : 1 BSA-clathrochelate assembly. Moreover, an addition of BSA or HSA to its solution caused the appearance of strong clathrochelate-based ICD outputs. The fluorescence emission anisotropy studies also evidenced the supramolecular binding of the fluorescein-tagged iron(ii) clathrochelate to the BSA macromolecule, leading to a high increase in this type of anisotropy. Subcellular uptake of the fluorescein-tagged molecules was visualized using fluorescence microscopy and showed its distribution to be mainly in the cytosol without entering the nucleus or accumulating in any other organelle. An X-rayed crystal of the above propargylamide macrobicyclic precursor with a reactive terminal C[triple bond, length as m-dash]C bond contains the clathrochelate molecules of two types, A and B. The encapsulated iron(ii) ion in these molecules is situated in the center of its FeN6-coordination polyhedron, the geometry of which is intermediate between a trigonal prism (TP) and a trigonal antiprism (TAP). The Fe-N distances vary from 1.8754(6) to 1.9286(4) Å and the heights h of their distorted TP-TAP polyhedra are very similar (2.30 and 2.31 Å); their values of φ are equal to 25.3 and 26.6°. In this crystal, the molecules of types A and B participate in different types of hydrogen bonding, giving H-bonded clathrochelate tetramers through their carboxylic and amide groups, respectively; these tetramers are connected to H-bonded chains.
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Affiliation(s)
- Roman O Selin
- Vernadskii Institute of General and Inorganic Chemistry NASU 32/34 Palladin Prosp. 03080 Kiev Ukraine
| | - Insa Klemt
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg Nikolaus-Fiebiger-Straße 10 91058 Erlangen Germany
| | - Viktor Ya Chernii
- Vernadskii Institute of General and Inorganic Chemistry NASU 32/34 Palladin Prosp. 03080 Kiev Ukraine
| | - Mykhaylo Yu Losytskyy
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Svitlana Chernii
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Andrzej Mular
- Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie St. 50-383 Wroclaw Poland
| | | | - Vladyslava B Kovalska
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Yan Z Voloshin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences 31 Leninsky Prosp. 119991 Moscow Russia
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences 28 Vavilova St. 119991 Moscow Russia
| | - Anna V Vologzhanina
- Nesmeyanov Institute of the Organoelement Compounds of the Russian Academy of Sciences 28 Vavilova St. 119991 Moscow Russia
| | | | - Andriy Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg Nikolaus-Fiebiger-Straße 10 91058 Erlangen Germany
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New boron-capped cage manganese(II) complex with terminal thiophene-2-carboxaldehyde groups: Crystal structure and density functional theory investigation for electron transfer. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Kovalska V, Vakarov S, Chornenka N, Gumienna-Kontecka E, Voloshin Y. Sensing of a Protein’s Structure Using the Induced Circular Dichroism Spectra by the Monocarboxyphenylsulfide Iron(II) Clathrochelates as Optical Reporters. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620100137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Kovalska V, Kuperman M, Losytskyy M, Vakarov S, Potocki S, Yarmoluk S, Voloshin Y, Varzatskii O, Gumienna-Kontecka E. Induced CD of iron(ii) clathrochelates: sensing of the structural and conformational alterations of serum albumins. Metallomics 2020; 11:338-348. [PMID: 30516230 DOI: 10.1039/c8mt00278a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An ability of inherently achiral macrobicyclic metal complexes iron(ii) clathrochelates to acquire an induced CD (ICD) output in the visible spectral range upon interaction with bovine serum albumin (BSA) was recently discovered. In the present work, the CD-reporting properties of iron(ii) clathrochelates to proteins and the thermodynamic parameters of their binding to albumins are evaluated. It is shown that iron(ii) clathrochelates functionalized by six ribbed carboxyphenylsulfide groups are able to discriminate between serum albumins of relative structure (here human and bovine albumins) by giving distinct ICD spectra. Besides, by the variation of the shape and intensity of CD bands, these cage metal complexes reflect the pH-triggered alterations of the tertiary structure of albumins. The constitutional isomerism (ortho-, meta- or para-isomers) of terminal carboxyphenylsulfide groups of iron(ii) clathrochelates strongly affects both the character of their ICD output upon binding with proteins and the parameters of the formed guest-host associates. Using isothermal titration calorimetry, it was determined that cage metal complexes bearing meta- and ortho-isomers of carboxyphenylsulfide groups possess higher association constants (Ka ∼ 2 × 104 M-1) and clathrochelate-to-BSA binding ratios (n = 2) than the para-isomer (Ka ∼ 5 × 103 M-1, n = 1). The iron(ii) clathrochelates are suggested to be potential molecular three-dimensional scaffolds for the design of CD-sensitive reporters able to recognize specific elements of protein surfaces.
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Affiliation(s)
- Vladyslava Kovalska
- Institute of Molecular Biology and Genetics, NASU, 150 Zabolotnogo St., 03143 Kyiv, Ukraine.
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10
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Zelinskii GE, Belov AS, Vologzhanina AV, Limarev IP, Pavlov AA, Olshevskaya VA, Makarenkov AV, Dorovatovskii PV, Lebed EG, Voloshin YZ. Iron(II) Clathrochelate with Terminal Triple C≡C Bond and Its Carboranoclathrochelate Derivative with a Flexible Linker between the Polyhedral Cages: Synthesis and X‐Ray Structure. ChemistrySelect 2019. [DOI: 10.1002/slct.201902888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Genrikh E. Zelinskii
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp. 119991 Moscow Russia
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Alexander S. Belov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Ilya P. Limarev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp. 119991 Moscow Russia
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Alexander A. Pavlov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Valentina A. Olshevskaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Anton V. Makarenkov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | | | - Ekaterina G. Lebed
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
| | - Yan Z. Voloshin
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Prosp. 119991 Moscow Russia
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28 Vavilova St. 119991 Moscow Russia
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11
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Selin RA, Chornenka NV, Chernii VY, Mokhir A, Vologzhanina AV, Belov AS, Pomadchik AL, Voloshin YZ. Chemical design of the heterodifunctionalized iron(II) clathrochelates with terminal biorelevant carboxyl group and reactive triple C≡C bond: Synthesis, structure, redox properties and their stability in various media. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Kovalska V, Vakarov S, Losytskyy M, Kuperman M, Chornenka N, Toporivska Y, Gumienna-Kontecka E, Voloshin Y, Varzatskii O, Mokhir A. Dicarboxyl-terminated iron(ii) clathrochelates as ICD-reporters for globular proteins. RSC Adv 2019; 9:24218-24230. [PMID: 35527894 PMCID: PMC9069836 DOI: 10.1039/c9ra04102h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/26/2019] [Indexed: 01/07/2023] Open
Abstract
Cage metal complexes iron(ii) clathrochelates, which are inherently CD silent, were discovered to demonstrate intensive output in induced circular dichroism (ICD) spectra upon their assembly to albumins. With the aim to design clathrochelates as protein-sensitive CD reporters, the approach for the functionalization of one chelate α-dioximate fragment of the clathrochelate framework with two non-equivalent substituents was developed, and constitutional isomers of clathrochelate with two non-equivalent carboxyphenylsulfide groups were synthesized. The interaction of designed iron(ii) clathrochelates and their symmetric homologues with globular proteins (serum albumins, lysozyme, β-lactoglobulin (BLG), trypsin, insulin) was studied by protein fluorescence quenching and CD techniques. A highly-intensive ICD output of the clathrochelates was observed upon their association with albumins and BLG. It was shown that in the presence of BLG, different clathrochelate isomers gave spectra of inverted signs, indicating the stabilization of opposite configurations (Λ or Δ) of the clathrochelate framework in the assembly with this protein. So, we suggest that the isomerism of the terminal carboxy group determined preferable configurations of the clathrochelate framework for the fixation in the protein binding site. MALDI TOF results show the formation of BLG-clathrochelate complex with ratio 1 : 1. Based on the docking simulations, the binding of the clathrochelate molecule (all isomers) to the main BLG binding site (calyx) in its open conformation is suggested. The above results point that the variation of the ribbed substituents at the clathrochelate framework is an effective tool to achieve the specificity of clathrochelate ICD reporting properties to the target protein.
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Affiliation(s)
- Vladyslava Kovalska
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Serhii Vakarov
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Mykhaylo Losytskyy
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Marina Kuperman
- Institute of Molecular Biology and Genetics, NASU 150 Zabolotnogo St. 03143 Kyiv Ukraine
| | - Nina Chornenka
- Princeton Biomolecular Research Labs 26A Saperne Pole St. 01042 Kyiv Ukraine
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Yuliya Toporivska
- Faculty of Chemistry, University of Wroclaw 14 F. Joliot-Curie St. 50-383 Wroclaw Poland
| | | | - Yan Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS 28 Vavilova St. 119991 Moscow Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences 31 Leninsky Prosp. 119991 Moscow Russia
| | - Oleg Varzatskii
- V.I. Vernadsky Institute of General and Inorganic Chemistry, NASU 32/34 Palladin Av. 03142 Kyiv Ukraine
| | - Andriy Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg Henkestr. 42 91054 Erlangen Germany
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13
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Borkotoky S, Murali A. The highly efficient T7 RNA polymerase: A wonder macromolecule in biological realm. Int J Biol Macromol 2018; 118:49-56. [DOI: 10.1016/j.ijbiomac.2018.05.198] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 05/25/2018] [Accepted: 05/26/2018] [Indexed: 12/01/2022]
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14
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Kovalska VB, Vakarov SV, Kuperman MV, Losytskyy MY, Gumienna-Kontecka E, Voloshin YZ, Varzatskii OA. Induced chirality of cage metal complexes switched by their supramolecular and covalent binding. Dalton Trans 2018; 47:1036-1052. [PMID: 29257161 DOI: 10.1039/c7dt03731g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ability of the ribbed-functionalized iron(ii) clathrochelates to induce a CD output in interactions with a protein, covalent bonding or supramolecular interactions with a low-molecular-weight chiral inductor, was discovered. The interactions of CD inactive, carboxyl-terminated iron(ii) clathrochelates with serum albumin induced their molecular asymmetry, causing an appearance of strong CD signals in the range of 350-600 nm, whereas methyl ester and amide clathrochelate derivatives remained almost CD inactive. The CD spectra of carboxyl-terminated clathrochelates on supramolecular interactions or covalent bonding with (R)-(+)-1-phenylethylamine gave a substantially lower CD output than with albumin, affected by both the solvent polarity and the isomerism of clathrochelate's ribbed substituents. In supramolecular assemblies, the bands were most intensive for ortho-substituted carboxyl-terminated clathrochelates. The ortho- and meta-phenylethylamide cage complexes in tetrachloromethane inverted the signs of their CD bands compared with those in acetonitrile. It was suggested that the tris-dioximate metal clathrochelates possess a Russian doll-like molecular system. Because of the distorted TP-TAP geometry, their coordination polyhedron had no inversion centre and possessed an inherent chirality together with the equiprobability of its left(Λ)- and right(Δ)-handle twists. The selective fixation of one of these C3-distorted conformations resulted in the appearance of the CD signal in the range of their visible metal-to-ligand charge transfer bands. Calculations by DFT methods were used to illustrate the possible conformations of the macrobicyclic molecules, as well as the intramolecular interactions between the cage framework and optically active distal substituents responsible for the chirality induction of the metal-centred coordination polyhedra.
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Affiliation(s)
- Vladyslava B Kovalska
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo St., 03143 Kiev, Ukraine and SC Princeton Biomolecular Research Labs, Saperne pole st., 26A, 01042, Kyiv, Ukraine.
| | - Serhii V Vakarov
- Vernadskii Institute of General and Inorganic Chemistry NASU, 32/34 Palladin Av., 03080 Kiev, Ukraine
| | - Marina V Kuperman
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo St., 03143 Kiev, Ukraine
| | - Mykhaylo Y Losytskyy
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo St., 03143 Kiev, Ukraine
| | | | - Yan Z Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS, 28 Vavilova St., 119991 Moscow, Russia and Kurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky Prosp., 119991 Moscow, Russia
| | - Oleg A Varzatskii
- SC Princeton Biomolecular Research Labs, Saperne pole st., 26A, 01042, Kyiv, Ukraine. and Vernadskii Institute of General and Inorganic Chemistry NASU, 32/34 Palladin Av., 03080 Kiev, Ukraine
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15
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Zelinskii GE, Belov AS, Belaya IG, Vologzhanina AV, Novikov VV, Varzatskii OA, Voloshin YZ. The molecular design of cage metal complexes for biological applications: pathways of the synthesis, and X-ray structures of a series of new N2-, S2- and O2-alicyclic iron(ii) di- and tetrachloroclathrochelates. NEW J CHEM 2018. [DOI: 10.1039/c7nj03051g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New iron(ii) di- and tetrahalogenoclathrochelates with apical functionalizing substituents were prepared and characterized.
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Affiliation(s)
- Genrikh E. Zelinskii
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Alexander S. Belov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Irina G. Belaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Valentin V. Novikov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | | | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- Moscow
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16
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Varzatskii OA, Vakarov SV, Belov AS, Lebed EG, Vologzhanina AV, Voloshin YZ. Synthesis and X-ray structure of methyl esters of the dicarboxyphenylsulfide iron(II) clathrochelates. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1407923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Oleg A. Varzatskii
- Vernadskii Institute of General and Inorganic Chemistry NASU, Kyiv, Ukraine
- SC Princeton Biomolecular Research Labs, Kyiv, Ukraine
| | - Serhii V. Vakarov
- Vernadskii Institute of General and Inorganic Chemistry NASU, Kyiv, Ukraine
| | | | | | | | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, Russia
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17
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Borkotoky S, Meena CK, Murali A. Interaction Analysis of T7 RNA Polymerase with Heparin and Its Low Molecular Weight Derivatives - An In Silico Approach. Bioinform Biol Insights 2016; 10:155-66. [PMID: 27594785 PMCID: PMC5004996 DOI: 10.4137/bbi.s40427] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/31/2016] [Accepted: 08/07/2016] [Indexed: 12/26/2022] Open
Abstract
The single subunit T7 RNA polymerase (T7RNAP) is a model enzyme for studying the transcription process and for various biochemical and biophysical studies. Heparin is a commonly used inhibitor against T7RNAP and other RNA polymerases. However, exact interaction between heparin and T7RNAP is still not completely understood. In this work, we analyzed the binding pattern of heparin by docking heparin and few of its low molecular weight derivatives to T7RNAP, which helps in better understanding of T7RNAP inhibition mechanism. The efficiency of the compounds was calculated by docking the selected compounds and post-docking molecular mechanics/generalized Born surface area analysis. Evaluation of the simulation trajectories and binding free energies of the complexes after simulation showed enoxaparin to be the best among low molecular weight heparins. Binding free energy analysis revealed that van der Waals interactions and polar solvation energy provided the substantial driving force for the binding process. Furthermore, per-residue free energy decomposition analysis revealed that the residues Asp 471, Asp 506, Asp 537, Tyr 571, Met 635, Asp 653, Pro 780, and Asp 812 are important for heparin interaction. Apart from these residues, most favorable contribution in all the three complexes came from Asp 506, Tyr 571, Met 635, Glu 652, and Asp 653, which can be essential for binding of heparin-like structures with T7RNAP. The results obtained from this study will be valuable for the future rational design of novel and potent inhibitors against T7RNAP and related proteins.
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Affiliation(s)
- Subhomoi Borkotoky
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Chetan Kumar Meena
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ayaluru Murali
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
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18
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Zelinskii GE, Belov AS, Vologzhanina AV, Pavlov AA, Novikov VV, Varzatskii OA, Voloshin YZ. Synthesis, structure and ADMET properties of the monoribbed-functionalized iron(II) clathrochelates with terminal DNA-relevant groups. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Synthesis, structure and reactivity of iron(II) clathrochelates with terminal formyl (acetal) groups. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2015.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Dolganov AV, Belov AS, Novikov VV, Vologzhanina AV, Romanenko GV, Budnikova YG, Zelinskii GE, Buzin MI, Voloshin YZ. First iron and cobalt(II) hexabromoclathrochelates: structural, magnetic, redox, and electrocatalytic behavior. Dalton Trans 2015; 44:2476-87. [PMID: 25559125 DOI: 10.1039/c4dt03082f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Template condensation of dibromoglyoxime with n-butylboronic acid on the corresponding metal ion as a matrix under vigorous reaction conditions afforded iron and cobalt(ii) hexabromoclathrochelates. The paramagnetic cobalt clathrochelate was found to be a low-spin complex at temperatures below 100 K, with a gradual increase in the effective magnetic moment at higher temperatures due to the temperature 1/2↔3/2 spin crossover and a gap caused by the structure phase transition. The multitemperature X-ray and DSC studies of this complex and its iron(ii)-containing analog also showed temperature structural transitions. The variation of an encapsulated metal ion's radius, electronic structure and spin state caused substantial differences in the geometry of its coordination polyhedron; these differences increase with the decrease in temperature due to Jahn-Teller distortion of the encapsulated cobalt(ii) ion with an electronic configuration d(7). As follows from CV and GC data, these cage iron and cobalt complexes undergo both oxidation and reduction quasireversibly, and showed an electrocatalytic activity for hydrogen production in different producing systems.
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Affiliation(s)
- Alexander V Dolganov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 119991 Moscow, Russia.
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21
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Voloshin YZ, Novikov VV, Nelyubina YV. Recent advances in biological applications of cage metal complexes. RSC Adv 2015. [DOI: 10.1039/c5ra10949c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review highlights advances in biochemical and medical applications of cage metal complexes (clathrochelates) and related polyhedral compounds.
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Affiliation(s)
- Yan Z. Voloshin
- Nesmeyanov Institute of the Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
| | - Valentin V. Novikov
- Nesmeyanov Institute of the Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
| | - Yulia V. Nelyubina
- Nesmeyanov Institute of the Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
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22
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Belov AS, Zelinskii GE, Varzatskii OA, Belaya IG, Vologzhanina AV, Dolganov AV, Novikov VV, Voloshin YZ. Molecular design of cage iron(ii) and cobalt(ii,iii) complexes with a second fluorine-enriched superhydrophobic shell. Dalton Trans 2015; 44:3773-84. [DOI: 10.1039/c4dt03628j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Pentafluorophenylboron-capped iron and cobalt(ii) hexachloroclathrochelate precursors undergo nucleophilic substitution giving the fluorine-enriched cage complexes.
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Affiliation(s)
- Alexander S. Belov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Genrikh E. Zelinskii
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Oleg A. Varzatskii
- Vernadskii Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine
- 03680 Kyiv
- Ukraine
| | - Irina G. Belaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Alexander V. Dolganov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Valentin V. Novikov
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russia
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23
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Wang J, Gondrand C, Touti F, Hasserodt J. A pair of highly biotolerated diamagnetic and paramagnetic iron(ii) complexes displaying electroneutrality. Dalton Trans 2015; 44:15391-5. [DOI: 10.1039/c5dt02192h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pair of structurally analogous macrocyclic iron(ii) complexes with a magnetic off-on relationship is reported that exhibit electroneutrality at neutral pH and high stability in physiological media.
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Affiliation(s)
- J. Wang
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
- School of Chemistry and Molecular Engineering
| | - C. Gondrand
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
| | - F. Touti
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
| | - J. Hasserodt
- Laboratoire de Chimie
- Université de Lyon – ENS
- Lyon
- France
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24
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Preparation and characterization of novel [Fe(methylisopropylglyoximato)2(amine)2] mixed chelates. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3849-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Novikov VV, Pavlov AA, Belov AS, Vologzhanina AV, Savitsky A, Voloshin YZ. Transition Ion Strikes Back: Large Magnetic Susceptibility Anisotropy in Cobalt(II) Clathrochelates. J Phys Chem Lett 2014; 5:3799-803. [PMID: 26278750 DOI: 10.1021/jz502011z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Transition-metal complexes are rarely considered as paramagnetic tags for NMR spectroscopy due to them generally having relatively low magnetic anisotropy. Here we report cobalt(II) cage complexes with the largest (among the transition-metal complexes) axial anisotropy of magnetic susceptibility, reaching as high as 12.6 × 10(-32) m(3) at room temperature. This remarkable anisotropy, which results from an unusual trigonal prismatic geometry of the complexes and translates into large negative value of the zero-field splitting energy, is high enough to promote reliable paramagnetic pseudocontact shifts at the distance beyond 2 nm. Our finding paves the way toward the applications of cobalt(II) clathrochelates as future paramagnetic tags. Given the incredible stability and functionalization versatility of clathrochelates, the fine-tuning of the caging ligand may lead to new chemically stable mononuclear single-molecule magnets, for which magnetic anisotropy is of importance.
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Affiliation(s)
- Valentin V Novikov
- †Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, 119991 Moscow, Russia
| | - Alexander A Pavlov
- †Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, 119991 Moscow, Russia
| | - Alexander S Belov
- †Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, 119991 Moscow, Russia
| | - Anna V Vologzhanina
- †Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, 119991 Moscow, Russia
| | - Anton Savitsky
- ‡Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Yan Z Voloshin
- †Nesmeyanov Institute of Organoelement Compounds, RAS, Vavilova str. 28, 119991 Moscow, Russia
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26
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Varzatskii OA, Novikov VV, Shulga SV, Belov AS, Vologzhanina AV, Negrutska VV, Dubey IY, Bubnov YN, Voloshin YZ. Copper-promoted reductive homocoupling of quasi-aromatic iron(II) clathrochelates: boosting the inhibitory activity in a transcription assay. Chem Commun (Camb) 2014; 50:3166-8. [PMID: 24516860 DOI: 10.1039/c3cc47018k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-promoted reductive homocoupling reaction, for the first time used for a metal complex, allowed obtaining a new kind of complexes with the encapsulated metal ions, C-C conjugated bis-clathrochelates. These compounds demonstrate extremely high transcription inhibition activity in the T7 RNA polymerase system with values of IC50 reaching as low as the submicromolar range, which places them among the most potent metal-based transcription inhibitors.
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Affiliation(s)
- O A Varzatskii
- Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia.
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27
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Petrov PA, Virovets AV, Plyusnin PE, Filatov EY, El’tsov IV, Voloshin YZ, Konchenko SN. Ribbed-monofunctionalized iron(II) clathrochelate with tert-butyl sulfide substituents: Synthesis, structure, and thermochemical transformations. RUSS J INORG CHEM+ 2014. [DOI: 10.1134/s0036023614100131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Belov AS, Vologzhanina AV, Novikov VV, Negrutska VV, Dubey IY, Mikhailova ZA, Lebed EG, Voloshin YZ. Synthesis of the first morpholine-containing iron(II) clathrochelates: A new class of efficient functionalized transcription inhibitors. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Varzatskii OA, Shul'ga SV, Belov AS, Novikov VV, Dolganov AV, Vologzhanina AV, Voloshin YZ. Copper(I)- and copper(0)-promoted homocoupling and homocoupling-hydrodehalogenation reactions of dihalogenoclathrochelate precursors for C-C conjugated iron(II) bis-cage complexes. Dalton Trans 2014; 43:17934-48. [PMID: 25056255 DOI: 10.1039/c4dt01557f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron(II) dibromo- and diiodoclathrochelates undergo copper(I)-promoted reductive homocoupling in HMPA at 70-80 °C leading to C-C conjugated dibromo- and diiodo-bis-clathrochelates in high yields. Under the same conditions, their dichloroclathrochelate analog does not undergo the same homocoupling reaction, so the target dichloro-bis-cage product was obtained in high yield via dimerization of its heterodihalogenide iodochloromonomacrobicyclic precursor. The use of NMP as a solvent at 120-140 °C gave the mixture of bis-clathrochelates resulting from a tandem homocoupling-hydrodehalogenation reaction: the initial acetonitrile copper(I) solvato-complex at a high temperature underwent re-solvatation and disproportionation leading to Cu(II) ions and nano-copper, which promoted the hydrodehalogenation process even at room temperature. The most probable pathway of this reaction in situ includes hydrodehalogenation of the already formed dihalogeno-bis-clathrochelate via the formation of reduced anion radical intermediates. As a result, chemical transformations of the iron(II) dihalogenoclathrochelates in the presence of an acetonitrile copper(I) solvato-complex were found to depend both on the nature of halogen atoms in their ribbed chelate fragments and on reaction conditions (i.e. solvent and temperature). The C-C conjugated iron(II) dihalogeno-bis-clathrochelates easily undergo nucleophilic substitution with various N,S-nucleophiles giving ribbed-functionalized bis-cage species. These iron(II) complexes were characterized by elemental analysis, MALDI-TOF mass spectrometry, IR, UV-Vis, (1)H and (13)C NMR spectroscopy, and by X-ray diffraction; their electrochemical properties were studied by cyclic voltammetry. The isomeric shift values in (57)Fe Mössbauer spectra of such cage compounds allowed identifying them as low-spin iron(II) complexes, while those of the quadrupole splitting are the evidence for a significant TP distortion of their FeN6-coordination polyhedra. As follows from CV data, the C-C conjugated iron(II) bis-clathrochelates undergo stepwise electrochemical reduction and oxidation giving mixed-valence Fe(II)Fe(I) and Fe(II)Fe(III) bis-cage intermediates.
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Affiliation(s)
- Oleg A Varzatskii
- Vernadskii Institute of General and Inorganic Chemistry NASU, 03680 Kiev, Ukraine
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30
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Metal-catalyzed cross-coupling reactions of iron(II) cage complexes: New furyl-containing macrobicyclic scaffold, a reactive halogenoclathrochelate precursor and its ribbed-functionalized derivatives. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Svidlov SV, Varzatskii OA, Potapova TV, Vologzhanina AV, Bukalov SS, Leites LA, Voloshin YZ, Bubnov YN. C-carboranylation of a quasi-aromatic iron(II) cage complex and its organic aromatic analog by the metal-catalyzed (promoted) cross-coupling reactions. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.02.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Voloshin YZ, Belov AS, Starikova ZA, Vologzhanina AV. Structural peculiarities of a homologous series of iron(II) cage complexes with ribbed glyoximate, methylglyoximate, and dimethylglyoximate chelate fragments. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0267-y] [Citation(s) in RCA: 9] [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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33
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Azarkh M, Penkova LV, Kats SV, Varzatskii OA, Voloshin YZ, Groenen EJJ. A Mononuclear Mn(II) Pseudoclathrochelate Complex Studied by Multi-Frequency Electron-Paramagnetic-Resonance Spectroscopy. J Phys Chem Lett 2014; 5:886-889. [PMID: 26274083 DOI: 10.1021/jz5000963] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Knowledge of the correlation between structural and spectroscopic properties of transition-metal complexes is essential to deepen the understanding of their role in catalysis, molecular magnetism, and biological inorganic chemistry. It provides topological and, sometimes, functional insight with respect to the active site properties of metalloproteins. The electronic structure of a high-spin mononuclear Mn(II) pseudoclathrochelate complex has been investigated by electron-paramagnetic-resonance (EPR) spectroscopy at 9.5 and 275.7 GHz. A substantial, virtually axial zero-field splitting with D = -9.7 GHz (-0.32 cm(-1)) is found, which is the largest one reported to date for a Mn(II) complex with six nitrogen atoms in the first coordination sphere.
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Affiliation(s)
- Mykhailo Azarkh
- †Huygens-Kamerlingh Onnes Laboratory, Department of Physics, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
| | - Larysa V Penkova
- ‡Department of Chemistry, Kyiv National Taras Shevchenko University, 01601 Kyiv, Ukraine
| | - Svitlana V Kats
- ‡Department of Chemistry, Kyiv National Taras Shevchenko University, 01601 Kyiv, Ukraine
| | - Oleg A Varzatskii
- §Vernadskii Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine
| | - Yan Z Voloshin
- ∥Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Edgar J J Groenen
- †Huygens-Kamerlingh Onnes Laboratory, Department of Physics, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
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Study of anti-fibrillogenic activity of iron(II) clathrochelates. Bioorg Med Chem 2014; 22:1883-8. [PMID: 24565971 DOI: 10.1016/j.bmc.2014.01.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 01/23/2014] [Accepted: 01/27/2014] [Indexed: 01/19/2023]
Abstract
The macrocyclic compounds mono- and bis-iron(II) clathrochelates were firstly studied as potential anti-fibrillogenic agents using fluorescent inhibitory assay, atomic force microscopy and flow cytometry. It is shown that presence of the clathrochelates leads to the change in kinetics of insulin fibrillization reaction and reduces the amount of formed fibrils (up to 70%). The nature of ribbed substituent could determine the activity of clathrochelates-the higher inhibitory effect is observed for compounds containing carboxybenzenesulfide groups, while the inhibitory properties only slightly depend on the size of complex species. The mono- and bis-clathrochelate derivatives of meta-mercaptobenzoic acid have close values of IC₅₀ namely 16 ± 2 and 24 ± 5 μM, respectively. The presence of clathrochelates decreases the fibril diameter from 5-12 nm for free insulin fibrils to 3-8 nm for these formed in the clathrochelate presence, it also prevents the lateral aggregation of mature fibrils and formation of superfibrillar clusters. However the addition of clathrochelate results in more heterogeneous (both by size and structure) insulin aggregates population as compared to the free insulin. This way, cage complexes-iron(II) clathrochelates are proposed as efficient agents able to suppress the protein aggregation processes.
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Zhang YY, Lin YJ, Jin GX. Nano-sized heterometallic macrocycles based on 4-pyridinylboron-capped iron(II) clathrochelates: syntheses, structures and properties. Chem Commun (Camb) 2014; 50:2327-9. [PMID: 24448026 DOI: 10.1039/c3cc49038f] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ir-Fe heterometallic macrocycles from clathrochelate-based bipyridyl and bis(amidinate) ligands with controllable cavity size have been prepared and characterized.
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Affiliation(s)
- Ying-Ying Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China.
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Artyushin OI, Odinets IL, Matveeva EV, Vologzhanina AV, Varzatskii OA, Lyubimov SE, Voloshin YZ. Clathrochelates meet phosphorus: thiophosphorylation of Fe(ii) dichloroclathrochelate precursor, synthesis of N,S-donor macrobicyclic ligands and their Pd(ii) complexes as potent catalysts of Suzuki cross-coupling reaction. Dalton Trans 2014; 43:9677-89. [DOI: 10.1039/c3dt53590h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Belaya IG, Svidlov SV, Dolganov AV, Zelinskii GE, Potapova TV, Vologzhanina AV, Varzatskii OA, Bubnov YN, Voloshin YZ. Apically linked iron(II) α-dioximate and α-oximehydrazonate bis-clathrochelates: synthesis, structure and electrocatalytic properties. Dalton Trans 2013; 42:13667-78. [PMID: 23903469 DOI: 10.1039/c3dt50881a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron(II) α-oximehydrazonate and α-dioximate bis-clathrochelates with apical hydrocarbon linkers were obtained by template condensation on an iron(II) ion followed by H(+)-catalyzed macrobicyclization of the bis-semiclathrochelate precursor with formaldehyde and triethyl orthoformate, and by transmetallation of the triethylantimony-containing clathrochelate precursor with diboron-containing bifunctional Lewis acids, respectively. The geometry of the para-phenylenediboron-capped iron(II) bis-clathrochelate studied by single-crystal X-ray diffraction is intermediate between a trigonal prism and a trigonal antiprism with a distortion angle of 20.4°; the rigidity of its C6H4 linker results in the presence of the expected three-fold pseudo-rotational B···Fe···B···B···Fe···B axis and a staggered conformation of the cyclohexane-containing chelate moieties. The cyclic voltammograms (CVs) for the oximehydrazonate bis-clathrochelates contain single one-electron (for each metallocentre, and therefore, two electrons per molecule) quasi-reversible reduction waves assigned to the redox-processes of Fe(2+/+), and no interaction is observed between the two encapsulated iron(I)-containing metallocenters; six strong electron-withdrawing ethoxy substituents in the 1,3,5-triazacyclohexane capping fragments substantially affect the potential of this reduction. The corresponding waves for the dioximate complexes are irreversible: due to the structural rigidity of the caging tris-dioximate ligands, their reduced dianionic forms are unstable on the CV time scale. The CV for the hexaethoxy bis-clathrochelate complex contains one two-electron reversible oxidation wave assigned to the metal-centered oxidation of Fe(2+/3+), whereas those for its dioximate analogs are quasi-reversible. The relative lability of the ligand cavity in binuclear oximehydrazonates causes a stabilization of both the oxidized and the reduced forms; the reduced iron(I)-containing species are highly electrocatalytically active in the hydrogen-producing 2H(+)/H2 reaction. Their higher activity as compared with that for dioximate bis-clathrochelates was explained by the higher availability of the catalytically active metallocentres for H(+) ions.
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Affiliation(s)
- Irina G Belaya
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 119991 Moscow, Russia
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Lebed EG, Belov AS, Dolganov AV, Vologzhanina AV, Novikov VV, Kuznetsov EV, Voloshin YZ. Template synthesis, structure and properties of 4-pyridinylboron-capped iron(II) clathrochelate precursors for Bubnov diallylation reaction. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Varzatskii OA, Denisenko IN, Volkov SV, Belov AS, Dolganov AV, Vologzhanina AV, Novikov VV, Bubnov YN, Voloshin YZ. Perfluoroarylation of Iron(II) Di‐ and Hexaiodoclathrochelates – Synthesis, X‐ray Structure, and Properties of the First Cage Complexes with Inherent Pentafluorophenyl Substituent(s). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300189] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Oleg A. Varzatskii
- Vernadskii Institute of General and Inorganic Chemistry NASU, 03680 Kiev, Ukraine
| | - Irina N. Denisenko
- Vernadskii Institute of General and Inorganic Chemistry NASU, 03680 Kiev, Ukraine
| | - Sergey V. Volkov
- Vernadskii Institute of General and Inorganic Chemistry NASU, 03680 Kiev, Ukraine
| | - Alexander S. Belov
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
| | - Alexander V. Dolganov
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
| | - Anna V. Vologzhanina
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
| | - Valentin V. Novikov
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
| | - Yurii N. Bubnov
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
| | - Yan Z. Voloshin
- Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia, Fax: +7‐499‐135‐50‐85, http://ineos.ac.ru/en/127‐laobc.html
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