1
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Guo Y, Liu H, Cao H, Dong X, Wang Z, Chen J, Xu C. Complexation of uranyl with benzoic acid in aqueous solution at variable temperatures: potentiometry, spectrophotometry and DFT calculations. Dalton Trans 2023; 52:11265-11271. [PMID: 37526577 DOI: 10.1039/d3dt01896b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Investigation of the fundamental coordination chemistry between U(VI) and simple organic ligands is important to understand the chemical behavior of U(VI) in the natural environment and separation processes. In this work, the complexation of U(VI) with a common carboxylic acid, benzoic acid, has been systematically investigated through potentiometry, spectrometry and DFT calculations. Three successive complexes (UO2L+, UO2L2 and UO2L3-, L = benzoate ion) between U(VI) and benzoic acid are successfully identified in aqueous solution and their corresponding thermodynamic parameters (stability constant, enthalpy and entropy) are determined. Notably, this is the first time that the previously missing 1 : 2 and 1 : 3 (U to L) complexes in aqueous solution and their complexation thermodynamics have been reported, which would aid in more accurate prediction of the chemical behavior of U(VI) in the presence of benzoic acid. Moreover, the structures of the complexes are elucidated using DFT calculations, which show that benzoic acid coordinates to U(VI) in a bidentate form in all the complexes.
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Affiliation(s)
- Yuxiao Guo
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Haiwang Liu
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Hong Cao
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Xue Dong
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Zhipeng Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, China.
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2
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Synthesis, single crystal X-ray, spectroscopic characterization and biological activities of Mn2+, Co2+, Ni2+ and Fe3+ complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127240] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Bartalucci N, Bortoluzzi M, Zacchini S, Pampaloni G, Marchetti F. Straightforward formation of carbocations from tertiary carboxylic acids via CO release at room temperature. Dalton Trans 2019; 48:1574-1577. [PMID: 30525172 DOI: 10.1039/c8dt04416c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We report an unprecedented mode of reactivity of carboxylic acids. A series of tertiary carboxylic acids, containing at least one phenyl α-substituent, undergo loss of carbon monoxide at room temperature (295 K), by a one pot reaction with 0.5-1 molar equivalents of WCl6 in dichloromethane. A plausible mechanism for the Ph3CCO2H/WCl6 reaction, leading to [CPh3][WOCl5] and Ph3CCl, is proposed on the basis of DFT calculations. The analogous reactions involving CEt(Ph)2CO2H, CMe(Ph)2CO2H and CMe2(Ph)CO2H selectively afforded stable hydrocarbons (alkene or indene, depending on the case), apparently resulting from the rearrangement of elusive tertiary carbocations.
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Affiliation(s)
- Niccolò Bartalucci
- University of Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124 Pisa, Italy.
| | - Marco Bortoluzzi
- University Ca' Foscari Venezia, Dipartimento di Scienze Molecolari e Nanosistemi, Via Torino 155, I-30170 Mestre, VE, Italy
| | - Stefano Zacchini
- University of Bologna, Dipartimento di Chimica Industriale "Toso Montanari", Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Guido Pampaloni
- University of Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124 Pisa, Italy.
| | - Fabio Marchetti
- University of Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124 Pisa, Italy.
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4
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Bartalucci N, Marchetti F, Zacchini S, Pampaloni G. Decarbonylation of phenylacetic acids by high valent transition metal halides. Dalton Trans 2019; 48:5725-5734. [DOI: 10.1039/c9dt00551j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The unusual decarbonylation of α-phenyl carboxylic acids with suitable substituents is a general reaction promoted at room temperature by homoleptic halides of high valent transition metals.
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Affiliation(s)
- Niccolò Bartalucci
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università di Bologna
- I-40136 Bologna
- Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
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5
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Synthesis and spectroscopic/DFT structural characterization of coordination compounds of Nb(V) and Ti(IV) with bioactive carboxylic acids. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.11.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Boreen MA, Parker BF, Hohloch S, Skeel BA, Arnold J. f-Block complexes of a m-terphenyl dithiocarboxylate ligand. Dalton Trans 2018; 47:96-104. [DOI: 10.1039/c7dt04073c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homoleptic thorium(iv), uranium(iv), and lanthanum(iii) dithiocarboxylate complexes were prepared and studied electrochemically; the lanthanum complex was found to bind toluene.
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Affiliation(s)
| | - Bernard F. Parker
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| | - Stephan Hohloch
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| | | | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
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7
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Dumpala RMR, Rawat N, Tomar BS. Stability, speciation and spectral properties of NpO 2+ complexes with pyridine monocarboxylates in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 181:13-22. [PMID: 28314204 DOI: 10.1016/j.saa.2017.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 02/24/2017] [Accepted: 03/04/2017] [Indexed: 06/06/2023]
Abstract
Neptunyl ion as NpO2+ is the least reacting and most mobile radioactive species among all the actinides. The picolinic acid used for decontamination is co-disposed along with the radioactive waste. Thus, in long term storage of HLW, there is high possibility of interaction of actinides and long lived fission products with the picolinate and can cause migration. The complexation of NpO2+ with the three structural isomers of pyridine monocarboxylates provides an insight to explore the role of hetero atom (nitrogen) with respect to key binding moiety (carboxylate). In the present study, the log β values, speciation and spectral properties of NpO2+ complexes with pyridine monocarboxylates viz. picolinate, nicotinate and isonicotinate, have been studied at 298K in 0.1M NaClO4 medium using spectrophotometry. The complexation reactions involving protonated ligands are always accompanied by protonation/deprotonation process; thus, the protonation constants of all the three pyridine monocarboxylates under same conditions were also determined by potentiometry. The spectrophotometric data analysis for complexation of NpO2+ with pyridine monocarboxylates indicated the presence of ML and ML2 complexes with log β values of 2.96±0.04, 5.67±0.08 for picolinate, 1.34±0.09, 1.65±0.12 for nicotinate and 1.52±0.04, 2.39±0.06 for isonicotinate. The higher values of log β for picolinate were attributed to chelation while in other two isomers, the binding is through carboxylate group only. Density Functional Theory (DFT) calculations were carried out to get optimized geometries and electrostatic charges on various atoms of the complexes and free pyridine monocarboxylates to support the experimental data. The higher stability of NpO2+ nicotinate and isonicotinate complexes compared to simple carboxylates and the difference in log β between the two is due to the charge polarization from unbound nitrogen to the bound carboxylate oxygen atoms.
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Affiliation(s)
- Rama Mohana Rao Dumpala
- Radioanalytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Neetika Rawat
- Radioanalytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India.
| | - B S Tomar
- Radioanalytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
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8
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Benalia H, Barkat D. Solvent extraction studies of cobalt(II) by capric acid from sodium sulfate solution. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2016.1230864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Houria Benalia
- Department of Industrial Chemistry, Faculty of Science and Technology, Laboratory of Molecular Chemistry and Environment, Biskra University, Biskra, Algeria
| | - Djamel Barkat
- Department of Industrial Chemistry, Faculty of Science and Technology, Laboratory of Molecular Chemistry and Environment, Biskra University, Biskra, Algeria
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9
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Ibrahim S, El-Gyar S, El-Gahami M, Hammam A. Mixed Ligand Complexes of Ni(II) with Arylidene- Anthranilic Acids and Some Lewis Bases. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199000048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Ibrahim S, El-Gyar S, El-Gahami M, Hammam A. Synthesis and Structural Studies on Homo-and Heterobinuclear Complexes of Cu(II), Ni(II) and Co(II) with Arylideneanthranilic Acid Schiff Bases. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199000047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Takao K, Takao S, Scheinost AC, Bernhard G, Hennig C. Formation of Soluble Hexanuclear Neptunium(IV) Nanoclusters in Aqueous Solution: Growth Termination of Actinide(IV) Hydrous Oxides by Carboxylates. Inorg Chem 2012; 51:1336-44. [DOI: 10.1021/ic201482n] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koichiro Takao
- Institute
of Radiochemistry, Helmholtz Zentrum Dresden-Rossendorf, P.O. Box 51 01
19, 01314 Dresden, Germany
- Department of Materials and
Life Science, Seikei University, 3-3-1,
Kichijoji-kitamachi, Musashino-shi, Tokyo 180-8633, Japan
| | - Shinobu Takao
- Institute
of Radiochemistry, Helmholtz Zentrum Dresden-Rossendorf, P.O. Box 51 01
19, 01314 Dresden, Germany
- Innovation Research Center for
Fuel Cells, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu-shi, Tokyo 182-8585, Japan
| | - Andreas C. Scheinost
- Institute
of Radiochemistry, Helmholtz Zentrum Dresden-Rossendorf, P.O. Box 51 01
19, 01314 Dresden, Germany
| | - Gert Bernhard
- Institute
of Radiochemistry, Helmholtz Zentrum Dresden-Rossendorf, P.O. Box 51 01
19, 01314 Dresden, Germany
| | - Christoph Hennig
- Institute
of Radiochemistry, Helmholtz Zentrum Dresden-Rossendorf, P.O. Box 51 01
19, 01314 Dresden, Germany
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12
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Mallick A, Saha S, Pachfule P, Roy S, Banerjee R. Structure and Gas Sorption Behavior of a New Three Dimensional Porous Magnesium Formate. Inorg Chem 2010; 50:1392-401. [PMID: 21192733 DOI: 10.1021/ic102057p] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arijit Mallick
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Subhadeep Saha
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Pradip Pachfule
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Sudip Roy
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Rahul Banerjee
- Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
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13
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Transition metal M(II) complexes with isonicotinoylhydrazone-9-anthraldehyde. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2010. [DOI: 10.2298/jsc091113121d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
New complexes of isonicotinoylhydrazone-9-anthraldehyde with Cu(II), Co(II)
and Ni(II) have been prepared and characterized by analytical and
physico-chemical techniques, such as elemental and thermal analyses, magnetic
susceptibility and conductivity measurements, and electronic, EPR and IR
spectral studies. The infrared spectral studies revealed the bidentate or
monodentate nature of the Schiff base in the complexes; the pyridine nitrogen
does not participate in the coordination. A tetrahedral geometry is suggested
for the nitrate-complexes and an octahedral geometry for the others. Thermal
studies support the chemical formulation of these complexes.
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14
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Zhang X, Zhang Y, Yang L, Yang R, Jin D. Synthesis and Characterization of Glycine Schiff Base Complexes of the Light Lanthanide Elements. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/00945710009351746] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Xiuying Zhang
- a Department of Chemistry , Henan Normal University , Xinxiang, 453002, Henan, P. R. China
| | - Youjuan Zhang
- a Department of Chemistry , Henan Normal University , Xinxiang, 453002, Henan, P. R. China
| | - Lin Yang
- a Department of Chemistry , Henan Normal University , Xinxiang, 453002, Henan, P. R. China
| | - Ruina Yang
- b Henan Institute of Chemistry , Zhengzhou, 450003, Henan, P. R. China
| | - Douman Jin
- b Henan Institute of Chemistry , Zhengzhou, 450003, Henan, P. R. China
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15
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Moody L, Balof S, Smith S, Rambaran VH, VanDerveer D, Holder AA. Tetra-μ-aqua-octaaqua-bis(μ-4-chloro-pyridine-2,6-dicarboxyl-ato)bis-(4-chloro-pyridine-2,6-dicarboxyl-ato)tri-cobalt(II)disodium(I) bis-[triaqua-bis(4-chloro-pyridine-2,6-dicarboxyl-ato)cobalt(II)] hexa-hydrate. Acta Crystallogr Sect E Struct Rep Online 2007; 64:m262-m263. [PMID: 21200599 PMCID: PMC2915174 DOI: 10.1107/s1600536807067141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Accepted: 12/15/2007] [Indexed: 05/30/2023]
Abstract
The title compound, [Co(3)Na(2)(C(7)H(2)ClNO(4))(4)(H(2)O)(12)][Co(C(7)H(2)ClNO(4))(H(2)O)(3)](2)·6H(2)O, consists of a centrosymmetric dimer of [Co(II)(dipicCl)(2)](2-) complex dianions [dipicCl is 4-chloro-pyridine-2,6-dicarboxyl-ate] bridged by an [Na(2)Co(II)(H(2)O)(12)](4+) tetra-cationic cluster, two independent [Co(dipicCl)(H(2)O)(3)] complexes, and six water mol-ecules of crystallization. The metals are all six-coordinate with distorted octahedral geometries. The [Co(II)(dipicCl)(H(2)O)(3)] complexes are neutral, with one tridentate ligand and three water molecules. The [Co(II)(dipicCl)(2)](2-) complexes each have two tridentate ligands. The [Na(2)Co(II)(H(2)O)(12)](4+) cluster has a central Co(II) ion which is coordinated to six water molecules and lies on a crystallographic inversion center. Four of the water molecules bridge to two sodium ions, each of which have three other water molecules coordinated along with an O atom from the [Co(II)(dipicCl)(2)](2-) complex. In the crystal structure, the various units are linked by O-H⋯O hydrogen bonds, forming a three-dimensional network. Two water molecules are disordered equally over two positions.
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Affiliation(s)
- LaMaryet Moody
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive #5043, Hattiesburg, MS 39406-0001, USA
| | - Shawna Balof
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive #5043, Hattiesburg, MS 39406-0001, USA
| | - Shanika Smith
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive #5043, Hattiesburg, MS 39406-0001, USA
| | - Varma H. Rambaran
- The University of Trinidad and Tobago, O’Meara Campus, Lots 74-98, O’Meara Industrial Park, Arima, Trinidad and Tobago
| | - Don VanDerveer
- Chemistry Department, Clemson University, Clemson SC 29634-0973, USA
| | - Alvin A. Holder
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, 118 College Drive #5043, Hattiesburg, MS 39406-0001, USA
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16
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Pathania MS, Sheikh HN, Kalsotra BL. Synthesis and characterization of tungsten carbonyl complexes containing N-methyl substituted urea and thiourea ligands. J COORD CHEM 2007. [DOI: 10.1080/00958970601019405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Haq nawaz Sheikh
- a Department of Chemistry , University of Jammu , Jammu – 180 006, India
| | - Bansi lal Kalsotra
- a Department of Chemistry , University of Jammu , Jammu – 180 006, India
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17
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Agarwal RK, Sharma D, Singh L, Agarwal H. Synthesis, Biological, Spectral, and Thermal Investigations of Cobalt(II) and Nickel(II) Complexes of N-Isonicotinamido -2',4'-Dichlorobenzalaldimine. Bioinorg Chem Appl 2007:29234. [PMID: 17497006 PMCID: PMC1686298 DOI: 10.1155/bca/2006/29234] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2005] [Revised: 08/24/2005] [Accepted: 08/29/2005] [Indexed: 11/28/2022] Open
Abstract
A new series of 12 complexes of cobalt(II) and nickel(II) with
N-isonicotinamido-2′,4′-dichlorobenzalaldimine (INH-DCB) with the
general composition MX2 ·
n(INH-DCB) [M = Co(II) or
Ni(II), X = Cl−
,Br−,
NO3−,
NCS−, or
CH3COO−,
n = 2; X = ClO4−, n = 3] have been synthesized. The nature of bonding
and the stereochemistry of the complexes have
been deduced from elemental analyses, infrared, electronic
spectra, magnetic susceptibility, and conductivity measurements. An
octahedral geometry has been suggested for all the complexes. The
metal complexes were screened for their antifungal and
antibacterial activities on different species of pathogenic fungi
and bacteria and their biopotency has been discussed.
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Affiliation(s)
- Ram K. Agarwal
- Department of Chemistry, School of Pure and Applied
Sciences, The University of the South Pacific, PO Box 1168, Suva, Fiji
- Department of Chemistry, Lajpat Rai Postgraduate College,
Sahibabad 201005, India
- *Ram K. Agarwal:
| | - Deepak Sharma
- Department of Chemistry, Lajpat Rai Postgraduate College,
Sahibabad 201005, India
| | - Lakshman Singh
- Department of Chemistry, Lajpat Rai Postgraduate College,
Sahibabad 201005, India
| | - Himanshu Agarwal
- Department of Chemistry, Lajpat Rai Postgraduate College,
Sahibabad 201005, India
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19
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Pathania MS, Sheikh HN, Kalsotra BL. Preparation and characterization of oxoperoxo tungsten(VI) complexes with morpholinomethyl urea and related ligands. RUSS J INORG CHEM+ 2007. [DOI: 10.1134/s0036023607020106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Agarwal RK, Agarwal H, Chakraborti I. Synthesis and Stereochemistry of Dioxouranium(VI) Coordination Compounds of Thiosemicarbazones Derived from 4-Aminoantipyrine. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/15533179508218256] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Pathania MS, Sheikh HN, Kalsotra BL. Synthesis and characterization of cyano complexes of oxotungsten(IV) with morpholinomethyl urea and related ligands. RUSS J INORG CHEM+ 2006. [DOI: 10.1134/s0036023606090075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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El-Medani SM, Ali OAM, Mohamed HA, Ramadan RM. Spectroscopic, thermal and X-ray crystal structure studies of some bis-(pyrazine-2-carboxylato) nickel(II) complexes. J COORD CHEM 2006. [DOI: 10.1080/00958970500156761] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Samir M. El-Medani
- a Chemistry Department , Faculty of Science, Cairo University, El-Faiyum Branch , El-Faiyum, Egypt
| | - Omyma A. M. Ali
- b Chemistry Department , University College for Girls, Ain Shams University , Cairo, Egypt
| | - Hassan A. Mohamed
- a Chemistry Department , Faculty of Science, Cairo University, El-Faiyum Branch , El-Faiyum, Egypt
| | - Ramadan M. Ramadan
- c Chemistry Department , Faculty of Science, Ain Shams University , Cairo, Egypt
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23
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Gutowski KE, Dixon DA. Predicting the Energy of the Water Exchange Reaction and Free Energy of Solvation for the Uranyl Ion in Aqueous Solution. J Phys Chem A 2006; 110:8840-56. [PMID: 16836448 DOI: 10.1021/jp061851h] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structures and vibrational frequencies of UO2(H2O)4(2+) and UO2(H2O)5(2+) have been calculated using density functional theory and are in reasonable agreement with experiment. The energies of various reactions were calculated at the density functional theory (DFT) and MP2 levels; the latter provides the best results. Self-consistent reaction field calculations in the PCM and SCIPCM approximations predicted the free energy of the water exchange reaction, UO2(H2O)4(2+) + H2O <--> UO2(H2O)5(2+). The calculated free energies of reaction are very sensitive to the choice of radii (O and H) and isodensity values in the PCM and SCIPCM models, respectively. Results consistent with the experimental HEXS value of -1.19 +/- 0.42 kcal/mol (within 1-3 kcal/mol) are obtained with small cavities. The structures and vibrational frequencies of the clusters with second solvation shell waters: UO2(H2O)4(H2O)8(2+), UO2(H2O)4(H2O)10(2+), UO2(H2O)4(H2O)11(2+), UO2(H2O)5(H2O)7(2+), and UO2(H2O)5(H2O)10(2+), were calculated and are in better agreement with experiment as compared to reactions involving only UO2(H2O)4(2+) and UO2(H2O)5(2+). The MP2 reaction energies for water exchange gave gas-phase results that agreed with experiment in the range -5.5 to +3.3 kcal/mol. The results were improved by inclusion of a standard PCM model with differences of -1.2 to +2.7 kcal/mol. Rearrangement reactions based on an intramolecular isomerization leading to a redistribution of water in the two shells provide good values in comparison to experiment with values of Delta G(exchange) from -2.2 to -0.5 kcal/mol so the inclusion of a second hydration sphere accounts for most solvation effects. Calculation of the free energy of solvation of the uranyl cation yielded an upper bound to the solvation energy of -410 +/- 5 kcal/mol, consistent with the best experimental value of -421 +/- 15 kcal/mol.
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Affiliation(s)
- Keith E Gutowski
- Department of Chemistry and Center for Green Manufacturing, Shelby Hall, Box 870336, The University of Alabama, Tuscaloosa, Alabama 35487, USA
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24
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Sheikh HN, Hussain A, Kalsotra BL. Synthesis and characterization of some oxodiperoxo molybdenum(VI) complexes of Morpholinomethyl urea and related ligands. RUSS J INORG CHEM+ 2006. [DOI: 10.1134/s003602360605007x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Synthesis and characterisation of some ruthenium(II) complexes of α-N heterocyclic carboxylic acids—X-ray structures of cis-[Ru(PPh3)2(L1)2]·2CH3OH and cis-[Ru(PPh3)2(L3H)2] (L1H=pyridine 2-carboxylic acid and L3H2=imidazole 4,5-dicarboxylic acid). Polyhedron 2001. [DOI: 10.1016/s0277-5387(01)00946-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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A new route for the synthesis of bis(pyridine dicarboxylato)bis(triphenylphosphine) complexes of ruthenium(II) and X-ray structural characterisation of the biologically active trans-[Ru(PPh3)2(L1H)2] (L1H2=pyridine 2,3-dicarboxylic acid). Polyhedron 2001. [DOI: 10.1016/s0277-5387(01)00736-7] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Swarnabala G, Rajasekharan MV. [Ca(dipicH2)(OH2)3][Ce(dipic)3]·5H2O: A One-Dimensional Coordination Polymer with Alternating CeN3O6 and CaNO7 Polyhedra (dipicH2 = Pyridine-2,6-dicarboxylic Acid). Inorg Chem 1998. [DOI: 10.1021/ic971261l] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Swarnabala
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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28
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Li SL, Mak TC. Synthesis and structural characterization of discrete mono-, bi-, tri- and tetranuclear complexes of cadmium(II) with triphenylphosphoniopropionate. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(96)05495-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Synthesis and X-ray structural characterization of cobalt(II), copper(II), and silver(I) complexes of triphenylphosphoniopropionate. Struct Chem 1997. [DOI: 10.1007/bf02272346] [Citation(s) in RCA: 5] [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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30
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Mehrotra KN, Shukla RK, Chauhan M. Spectroscopic and Conductometric Studies of Lanthanide Soaps. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1995. [DOI: 10.1246/bcsj.68.1825] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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El-Gahami MA. Synthetic and Physicochemical Studies of Polymeric Homotrimetallic Complexes Involving [(8-Hydroxy-5-quinolyl)imino]mercaptoacetic Acid. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1994. [DOI: 10.1246/bcsj.67.2417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Agarwal R, Arora K, Dutt P. Some high coordination compounds of thorium(IV) and dioxouranium(VI) derived from hydrazones of isonicotinic acid hydrazide. Polyhedron 1994. [DOI: 10.1016/s0277-5387(00)83016-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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33
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Chandra R. Mixed-Ligand Uranyl(VI) Complexes of Multidentate Hydrazones and Bidentate (N,N′) Chelating Ligands. ACTA ACUST UNITED AC 1993. [DOI: 10.1080/15533179308016635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Chessa G, Marangoni G, Pitteri B, Bertolasi V, Gilli G, Ferretti V. Synthesis and characterization of square-planar platinum(II) and palladium(II) complexes with pyridine-2,6-dicarboxylic acid (H2dipic). X-ray crystal structure of trans-Na2[Pt(dipic)2]·6H2O and K[Pt(dipic)I]·1/2H2O. Inorganica Chim Acta 1991. [DOI: 10.1016/s0020-1693(00)85445-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Ibrahim SA, el-Gahami MA, Khafagi ZA, el-Gyar SA. Structure and antimicrobial activity of some new azopyrazolone chelates of Ni(II) and Cu(II) acetates, sulfates, and nitrates. J Inorg Biochem 1991; 43:1-7. [PMID: 1940898 DOI: 10.1016/0162-0134(91)84063-f] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Four coordinate Ni(II) and Cu(II) chelates formed by reaction of two azopyrazolone derivatives with metal sulfate, acetate, or nitrate are described. It is concluded that the ligands possess tautomeric equilibria and can coordinate to the metal ion as neutral or monobasic bidentates. The so-obtained complexes are characterized by elemental and thermal analyses, IR and electronic spectra, as well as conductivity measurements. A pseudo-tetrahedral polymeric structure is proposed for all the complexes in which the acetate, nitrate, or sulfate is attached to the metal ion in the bridging bidentate mode. It is observed that the chelates formed are more potent as antimicrobial agents than the free ligands.
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Affiliation(s)
- S A Ibrahim
- Department of Chemistry, Faculty of Science, Assiut University, Egypt
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36
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Coordination chemistry of f-block elements with imine acids. Part IV. Synthetic and chiroptical studies on lanthanide(III) complexes of imine acids derived from L-alanine, L-valine, L-tyrosine and L-glutamic acid. TRANSIT METAL CHEM 1990. [DOI: 10.1007/bf01032232] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Some new derivatives of organozirconium(IV) and organotitanium(IV) with pyridinecarboxylic acids. Inorganica Chim Acta 1989. [DOI: 10.1016/s0020-1693(00)84019-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Hammam AM, Ibrahim SA, El-gyar SA, El-gahami MA. Coordinatively Unsaturated Cu(II) Chelates of Arylideneanthranilic Acids and Their Reactivity Towards Lewis Bases. ACTA ACUST UNITED AC 1988. [DOI: 10.1080/00945718808060832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Coordination chemistry of f-block elements with imine acids. Part II. Studies on dioxouranium(VI) complexes of N-(salicylidene)-L-valine and N-(orthovanillidene)-L-valine. Inorganica Chim Acta 1987. [DOI: 10.1016/s0020-1693(00)86673-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Dioxouranium(VI) complexes ofN-(orthovanillidene)-anthranilic acid andN-(vanillidene)-anthranilic acid. TRANSIT METAL CHEM 1987. [DOI: 10.1007/bf01022341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Baghlaf A, Aly M, Ganji N. Diagnostic features for the linkage isomerism of the oximato group: Characterization of some Cu(II), Co(II) and U(VI) complexes of a dioxime schiff-base ligand. Polyhedron 1987. [DOI: 10.1016/s0277-5387(00)80790-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Deacon G, Huber F, Phillips R. Diagnosis of the nature of carboxylate coordination from the direction of shifts of carbonoxygen stretching frequencies. Inorganica Chim Acta 1985. [DOI: 10.1016/s0020-1693(00)83783-4] [Citation(s) in RCA: 157] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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43
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Latos-Gra·yński L. 1H NMR studies of U(IV)-1,2-cyclohexane(dinitrilo)-N,N,N′,N′-tetraacetic acid complexes. Polyhedron 1985. [DOI: 10.1016/s0277-5387(00)86690-5] [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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44
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Preparations, structures and thermal decomposition of some bis(pentafluorobenzoato)dioxouranium(VI) complexes. Polyhedron 1985. [DOI: 10.1016/s0277-5387(00)84229-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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Sengupta S, Sahni S, Kapoor R. Mixed ligand complexes of ruthenium(III), rhodium(III) and iridium(III) with dipicolinic acid and some monobasic bidentate nitrogen, oxygen donor ligands. Polyhedron 1983. [DOI: 10.1016/s0277-5387(00)83922-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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46
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47
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Deacon G. Relationships between the carbon-oxygen stretching frequencies of carboxylato complexes and the type of carboxylate coordination. Coord Chem Rev 1980. [DOI: 10.1016/s0010-8545(00)80455-5] [Citation(s) in RCA: 4185] [Impact Index Per Article: 95.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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49
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Metal complexes of the Schiff base derived from ortho-aminophenol and ethyl acetoacetate containing similar and dissimilar metal atoms. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0022-1902(80)80283-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Aly M, El-Awad A. The reactivity of the coordinated ligand in Th(IV) acetylacetonate towards protons; the characterization os ome mixed ligand complexes for the metal ion. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0022-1902(80)80086-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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