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Shinada M, Suzuki H, Hanyu M, Igarashi C, Matsumoto H, Takahashi M, Hihara F, Tachibana T, Sogawa C, Zhang MR, Higashi T, Sato H, Kurihara H, Yoshii Y, Doi Y. Trace Metal Impurities Effects on the Formation of [ 64Cu]Cu-diacetyl-bis( N4-methylthiosemicarbazone) ([ 64Cu]Cu-ATSM). Pharmaceuticals (Basel) 2023; 17:10. [PMID: 38275997 PMCID: PMC10821298 DOI: 10.3390/ph17010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
[64Cu]Cu-diacetyl-bis(N4-methylthiosemicarbazone) ([64Cu]Cu-ATSM) is a radioactive hypoxia-targeting therapeutic agent being investigated in clinical trials for malignant brain tumors. For the quality management of [64Cu]Cu-ATSM, understanding trace metal impurities' effects on the chelate formation of 64Cu and ATSM is important. In this study, we conducted coordination chemistry studies on metal-ATSM complexes. First, the effects of nonradioactive metal ions (Cu2+, Ni2+, Zn2+, and Fe2+) on the formation of [64Cu]Cu-ATSM were evaluated. When the amount of Cu2+ or Ni2+ added was 1.2 mol or 288 mol, equivalent to ATSM, the labeling yield of [64Cu]Cu-ATSM fell below 90%. Little effect was observed even when excess amounts of Zn2+ or Fe2+ were added to the ATSM. Second, these metals were reacted with ATSM, and chelate formation was measured using ultraviolet-visible (UV-Vis) absorption spectra. UV-Vis spectra showed a rapid formation of Cu2+ and the ATSM complex upon mixing. The rate of chelate formation by Ni2+ and ATSM was lower than that by Cu-ATSM. Zn2+ and Fe2+ showed much slower reactions with the ATSM than Ni2+. Trace amounts of Ni2+, Zn2+, and Fe2+ showed little effect on [64Cu]Cu-ATSM' quality, while the concentration of impurity Cu2+ must be controlled. These results can provide process management tools for radiopharmaceuticals.
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Affiliation(s)
- Mitsuhiro Shinada
- Faculty of Science, Toho University, Funabashi 274-8510, Japan; (M.T.); (T.T.); (Y.D.)
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Hisashi Suzuki
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Masayuki Hanyu
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Chika Igarashi
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Hiroki Matsumoto
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Masashi Takahashi
- Faculty of Science, Toho University, Funabashi 274-8510, Japan; (M.T.); (T.T.); (Y.D.)
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Fukiko Hihara
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Tomoko Tachibana
- Faculty of Science, Toho University, Funabashi 274-8510, Japan; (M.T.); (T.T.); (Y.D.)
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Chizuru Sogawa
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Ming-Rong Zhang
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Tatsuya Higashi
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
| | - Hidemitsu Sato
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Hiroaki Kurihara
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Yukie Yoshii
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (H.S.); (M.H.); (C.I.); (H.M.); (F.H.); (C.S.); (M.-R.Z.); (T.H.)
- Kanagawa Cancer Center, Kanagawa 241-8515, Japan; (H.S.); (H.K.)
| | - Yoshihiro Doi
- Faculty of Science, Toho University, Funabashi 274-8510, Japan; (M.T.); (T.T.); (Y.D.)
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Structures, Binding and Clustering Energies of Cu2+(MeOH)n=1-8 Clusters and Temperature Effects : A DFT Study. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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3
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Boukar O, Fifen JJ, Malloum A, Nsangou M, Ghalila H, Conradie J. Solvation energies of ferrous ion in methanol at various temperatures. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Da-yang TE, Fifen JJ, Conradie J, Conradie MM. Structures, temperature effect, binding and clustering energies of Cu2+(MeOH)n=1-8 clusters and extrapolations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Watanabe H, Arai N, Kameda Y, Buchner R, Umebayashi Y. Effect of Brønsted Acidity on Ion Conduction in Fluorinated Acetic Acid and N-Methylimidazole Equimolar Mixtures as Pseudo-protic Ionic Liquids. J Phys Chem B 2020; 124:11157-11164. [PMID: 33198463 DOI: 10.1021/acs.jpcb.0c07706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To clarify proton conduction mechanism in protic ionic liquids (PILs) and pseudo-PILs (pPILs), equimolar mixtures of N-methylimidazole (C1Im) with fluorinated acetic acids were investigated by Raman spectroscopy, X-ray scattering, and dielectric relaxation spectroscopy (DRS). Only the ionic species exist in the equimolar mixture of C1Im and HTFA (HTFA: trifluoroacetic acid). On the other hand, the equimolar mixture of C1Im and HDFA (HDFA: difluoroacetic acid) consists of both ionic and electrically neutral species. In particular, not only the electrostatic but also van der Waals interactions with the F atoms were observed in the liquid structures of both [C1hIm+][TFA-] and [C1hIm+][DFA-]. The concept for proton conduction mechanism that we have proposed in previous study was revisited; the proton conduction mechanism could be classified with two linear free energy relationship lines for proton exchange reaction and translation/rotation of proton carriers. Our results exhibit that the proton conduction mechanism changes from proton hopping to vehicle mechanism with increasing acidity of an acid HA in PILs.
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Affiliation(s)
- Hikari Watanabe
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Chiba 278-8510, Japan
| | - Nana Arai
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Yasuo Kameda
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Richard Buchner
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstr. 31, Regensburg 93053, Germany
| | - Yasuhiro Umebayashi
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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Relaxation dynamics of [Re(CO) 2(bpy){P(OEt) 3} 2](PF 6) in TEOA solvent measured by time-resolved attenuated total reflection terahertz spectroscopy. Sci Rep 2019; 9:11772. [PMID: 31409913 PMCID: PMC6692373 DOI: 10.1038/s41598-019-48191-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 07/30/2019] [Indexed: 12/02/2022] Open
Abstract
To reveal highly efficient photocatalytic properties of an artificial photosynthesis material [Re(CO)2(bpy){P(OEt)3}2](PF6), we have directly observed the photo-induced relaxation dynamics and reductive quenching process of the photo-excited state on a photosynthesis material in Triethanolamine (TEOA) solvent as an electron donor by time-resolved attenuated total reflection spectroscopy in the terahertz (THz) region. The spectrum of the complex in TEOA has an intermolecular vibrational mode between the complex and TEOA molecules, which reflects the precursor of the reductive quenching process. The intermolecular vibrational mode has three-step relaxation process in a picosecond timescale after photo-excitation, where firstly the triplet metal-to-ligand charge transfer excited state is vibrationally cooled down, secondly the distance between Re and TEOA is reduced by the rotation of TEOA molecules due to dipole-dipole interaction accelerated by heat transfer, and finally electrons transfer from TEOA to Re. These observations provide us the detailed information of the electron transfer process of photocatalytic properties of [Re(CO)2(bpy){P(OEt)3}2](PF6) in TEOA solvent.
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Frank P, Benfatto M, Qayyam M, Hedman B, Hodgson KO. A high-resolution XAS study of aqueous Cu(II) in liquid and frozen solutions: pyramidal, polymorphic, and non-centrosymmetric. J Chem Phys 2015; 142:084310. [PMID: 25725734 PMCID: PMC4349298 DOI: 10.1063/1.4908266] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 02/04/2015] [Indexed: 11/15/2022] Open
Abstract
High-resolution EXAFS (k = 18 Å(-1)) and MXAN XAS analyses show that axially elongated square pyramidal [Cu(H2O)5](2+) dominates the structure of Cu(II) in aqueous solution, rather than 6-coordinate JT-octahedral [Cu(H2O)6](2+). Freezing produced a shoulder at 8989.6 eV on the rising XAS edge and an altered EXAFS spectrum, while 1s → 3d transitions remained invariant in energy position and intensity. Core square pyramidal [Cu(H2O)5](2+) also dominates frozen solution. Solvation shells were found at ∼3.6 Å (EXAFS) or ∼3.8 Å (MXAN) in both liquid and frozen phases. However, MXAN analysis revealed that about half the time in liquid solution, [Cu(H2O)5](2+) associates with an axially non-bonding 2.9 Å water molecule. This distant water apparently organizes the solvation shell. When the 2.9 Å water molecule is absent, the second shell is undetectable to MXAN. The two structural arrangements may represent energetic minima of fluxional dissolved aqueous [Cu(H2O)5](2+). The 2.9 Å trans-axial water resolves an apparent conflict of the [Cu(H2O)5](2+) core model with a dissociational exchange mechanism. In frozen solution, [Cu(H2O)5](2+) is associated with either a 3.0 Å axial non-bonded water molecule or an axial ClO4(-) at 3.2 Å. Both structures are again of approximately equal presence. When the axial ClO4(-) is present, Cu(II) is ∼0.5 Å above the mean O4 plane. This study establishes [Cu(H2O)5](2+) as the dominant core structure for Cu(II) in water solution, and is the first to both empirically resolve multiple extended solution structures for fluxional [Cu(H2O)5](2+) and to provide direct evidence for second shell dynamics.
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Affiliation(s)
- Patrick Frank
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Maurizio Benfatto
- Laboratori Nazionali di Frascati-INFN, P.O. Box 13, 00044 Frascati, Italy
| | - Munzarin Qayyam
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Britt Hedman
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA
| | - Keith O Hodgson
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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Dai M, Gu TY, Zhao X, Li HX, Lang JP. Formation of Zn(ii) and Pb(ii) coordination polymers of tetrakis(4-pyridyl)cyclobutane controlled by benzene and toluene. CrystEngComm 2015. [DOI: 10.1039/c5ce01473e] [Citation(s) in RCA: 12] [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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Bello L, Quintero M, Mora AJ, González T, Escalona A, Añez R, Ávila EE, Briceño A. Study of temperature and ligand flexibility effects on coordination polymer formation from cyclobutanetetracarboxylic acid. CrystEngComm 2015. [DOI: 10.1039/c5ce00646e] [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
Three novel coordination polymers (CPs) from rctt-H4Cbtc and 4,4’-bpe with Zn and Ni metal nodes have been synthesized. The CP derivates of Zn are an unusual example for the preparation of metastable phases involving temperature dependent and concomitant transformation.
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Affiliation(s)
- Lizaira Bello
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
| | - Marilyn Quintero
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
- Laboratorio de Cristalografía
| | - Asiloé J. Mora
- Laboratorio de Cristalografía
- Departamento de Química
- Facultad de Ciencias
- Mérida, Venezuela
| | - Teresa González
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
| | - Ana Escalona
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
| | - Rafael Añez
- Laboratorio de Química Computacional
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
| | - Edward E. Ávila
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
| | - Alexander Briceño
- Laboratorio de Síntesis y Caracterización de Nuevos Materiales
- Centro de Química
- Instituto Venezolano de Investigaciones Científicas
- San Antonio de Los Altos, Venezuela
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Yang F, Chen M, Li X, Tao J, Huang R, Zheng L. Two‐Dimensional Iron(II) Networks – Guest‐Dependent Structures and Spin‐Crossover Behaviors. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300211] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Feng‐Lei Yang
- School of Chemistry and Chemical Engineering and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, http://202.195.64.103/s/23/t/1895/f7/e9/info129001.htm
| | - Ming‐Guang Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, http://202.195.64.103/s/23/t/1895/f7/e9/info129001.htm
| | - Xiu‐Ling Li
- School of Chemistry and Chemical Engineering and Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Jun Tao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, http://202.195.64.103/s/23/t/1895/f7/e9/info129001.htm
| | - Rong‐Bin Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, http://202.195.64.103/s/23/t/1895/f7/e9/info129001.htm
| | - Lan‐Sun Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China, http://202.195.64.103/s/23/t/1895/f7/e9/info129001.htm
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Huang WH, Luan XJ, Zhou X, Chen J, Wang YY, Shi QZ. The influence of ligand configuration, solvent size and solvent polarity on the porous shape and void volume in a series of isomeric or isomorphic porous MOFs. CrystEngComm 2013. [DOI: 10.1039/c3ce41801d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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KATAYAMA M, SHINODA M, OZUTSUMI K, FUNAHASHI S, INADA Y. Reevaluation of Donor Number Using Titration Calorimetry. ANAL SCI 2012; 28:103-6. [DOI: 10.2116/analsci.28.103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Misaki KATAYAMA
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University
| | - Mitsushi SHINODA
- Laboratory of Analytical Chemistry, Department of Chemistry, Faculty of Science, Nagoya University
| | - Kazuhiko OZUTSUMI
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University
| | - Shigenobu FUNAHASHI
- Laboratory of Analytical Chemistry, Department of Chemistry, Faculty of Science, Nagoya University
| | - Yasuhiro INADA
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University
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Novel structural variation of silver(I)–pyridine complexes in nitromethane as studied by X-ray absorption spectroscopy. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Solution Properties of Azidokojatoiron(III) Complexes. J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-011-9721-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mishustin AI. Theoretical estimate of the stability constants of metal complexes of aliphatic and heterocyclic amines in aqueous solutions. RUSS J INORG CHEM+ 2008. [DOI: 10.1134/s0036023608090064] [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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Izakovič M, Šima J, Žitňanský M. Effects of wavelength and substituents on iron(III) photoreduction in trans-[Fe(R-sal-R‵-en)(CH3OH)(NCS)] complexes. J COORD CHEM 2007. [DOI: 10.1080/00958970500109448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mário Izakovič
- a Department of Inorganic Chemistry , Slovak Technical University , Radlinského 9, SK-81237 Bratislava, Slovakia
| | - Jozef Šima
- a Department of Inorganic Chemistry , Slovak Technical University , Radlinského 9, SK-81237 Bratislava, Slovakia
| | - Marián Žitňanský
- a Department of Inorganic Chemistry , Slovak Technical University , Radlinského 9, SK-81237 Bratislava, Slovakia
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Asada M, Mitsugi T, Ogura T, Fujii K, Umebayashi Y, Ishiguro SI. Solvation Number and Conformation of N,N-Dimethylacrylamide and N,N-Dimethylpropionamide in the Coordination Sphere of the Cobalt(II) Ion in Solution Studied by FT-IR and FT-Raman Spectroscopy. ANAL SCI 2007; 23:835-40. [PMID: 17625326 DOI: 10.2116/analsci.23.835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The solvation number and conformation of N,N-dimethylacrylamide (DMAA) in the coordination sphere of the cobalt(II) ion in solution were studied, and compared with those of N,N-dimethylpropionamide (DMPA) by means of FT-Raman and FT-IR spectroscopy. Both solvents are present as either the planar cis or nonplanar staggered conformer in equilibrium, and the former is more stable in the bulk. As these solvents solvate the metal ion through the carbonyl O atom of the acryl (DMAA) or propionyl (DMPA) group, the solvation structure around the metal ion is highly congested to reduce the solvation number and/or to lead to a conformational geometry change of solvent. It turns out that the solvation number of the cobalt(II) ion is 4 for both DMAA and DMPA at 298 K, and that DMPA changes its conformation upon solvation, whereas DMAA hardly changes. The enthalpy of conformational change DeltaH degrees for DMPA is 5 kJ mol(-1) in the bulk, and is -9 kJ mol(-1) in the coordination sphere of the cobalt(II) ion. On the other hand, the DeltaH degrees value for DMAA is 9 kJ mol(-1) in the bulk.
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Affiliation(s)
- Mitsunori Asada
- Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka, Japan
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Tanada KI, Hashimoto A, Tsuji H, Kato K, Inada Y, Aizawa SI, Funahashi S. Mechanistic study of solvent exchange reactions of manganese(II), iron(II), nickel(II), copper(II), and iron(III) ions in bulky 1,1,3,3-tetramethylurea (TMU) solvent by measurements of oxygen-17 NMR relaxation rates and chemical shifts: Complexation reaction of nickel(II) ion in TMU and crystal structure of [Ni(tmu)5](BPh4)2. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Equilibrium and kinetics of the dinuclear complex formation between N,N′-ethylenebis(salicylideneiminato)copper(II) and metal(II,I) ions in acetonitrile. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.12.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Umebayashi Y, Mroz B, Asada M, Fujii K, Matsumoto K, Mune Y, Probst M, Ishiguro SI. Conformation of Solvent N,N-Dimethylpropionamide in the Coordination Sphere of the Zinc(II) Ion Studied by Raman Spectroscopy and DFT Calculations. J Phys Chem A 2005; 109:4862-8. [PMID: 16833831 DOI: 10.1021/jp044763a] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solvation structure of the zinc(II) ion in N,N-dimethylpropionamide (DMPA) was studied by Raman spectroscopy at varying temperature and by quantum mechanical calculations. No significant ion-pair formation was found for the Zn(ClO4)2 solution in the molality range m(Zn) < 1.5 mol kg(-1), and the solvation number of the zinc(II) ion was determined to be 4, indicating that 6-coordination of DMPA is sterically hindered. Interestingly, DMPA molecules are under equilibrium between planar cis and nonplanar staggered conformers, and the latter is more preferred in the coordination sphere, while the reverse is the case in the bulk. The DeltaG degrees , DeltaH degrees , and TDeltaS degrees values of conformational change from planar cis to nonplanar staggered in the coordination sphere were obtained to be -0.9, -8.5, and -7.5 kJ mol(-1), respectively. Density functional theory (DFT) calculations show that the planar cis conformer is more favorable than the nonplanar staggered one in the 1:2 cluster, as is the case for a single DMPA molecule and H(DMPA)+, indicating that there hardly occurs solvent-solvent interaction through the metal ion in the Zn2+-DMPA 1:2 cluster. On the other hand, the SCF energy of [Zn(planar cis-DMPA)4-n(nonplanar staggered DMPA)n]2+ (n = 0-4) decreases with increasing n, implying that the nonplanar staggered conformer is preferred in the solvate ion. It is thus concluded that solvent-solvent interaction through space, or solvation steric effect, plays a crucial role in the conformational equilibrium in the coordination sphere of the four-solvate metal ion.
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Affiliation(s)
- Yasuhiro Umebayashi
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
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Umebayashi Y, Mune Y, Tsukamoto T, Zhang Y, Ishiguro SC. Raman spectroscopic study on the enthalpy of conformational change of N,N-dimethylpropionamide bound to calcium ion. J Mol Liq 2005. [DOI: 10.1016/j.molliq.2004.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yang KL, Cadwell K, Abbott NL. Mechanistic Study of the Anchoring Behavior of Liquid Crystals Supported on Metal Salts and Their Orientational Responses to Dimethyl Methylphosphonate. J Phys Chem B 2004. [DOI: 10.1021/jp0470391] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kun-Lin Yang
- Department of Chemical and Biological Engineering, University of WisconsinMadison, 1415 Engineering Drive, Madison, Wisconsin 53706-1607
| | - Katie Cadwell
- Department of Chemical and Biological Engineering, University of WisconsinMadison, 1415 Engineering Drive, Madison, Wisconsin 53706-1607
| | - Nicholas L. Abbott
- Department of Chemical and Biological Engineering, University of WisconsinMadison, 1415 Engineering Drive, Madison, Wisconsin 53706-1607
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Izakovič M, Šima J, Brezová V. Photochemical behaviour of iron(III) oxalato complexes with N,N′-ethylenebis(benzoylacetoneiminato) Schiff base derivatives. J Photochem Photobiol A Chem 2004. [DOI: 10.1016/j.jphotochem.2004.04.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wasada-Tsutsui Y, Wasada H, Funahashi S. Theoretical Study of Solvent-Exchange Reactions on Hexasolvated Divalent Cations in the First Transition Series: Model Calculation of a Hydrogen Cyanide Exchange. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2003. [DOI: 10.1246/bcsj.76.1713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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