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Winslow C, Rathke P, Rittle J. Multielectron Bond Cleavage Processes Enabled by Redox-Responsive Phosphinimide Ligands. Inorg Chem 2023; 62:17697-17704. [PMID: 37847032 PMCID: PMC10618924 DOI: 10.1021/acs.inorgchem.3c02307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Indexed: 10/18/2023]
Abstract
The activation of small molecules via multielectron redox processes offers promise in mediating difficult transformations related to energy conversion processes. While molecular systems that engage in one- and two-electron redox processes are widespread, those that participate in the direct transfer of four or more electrons to small molecules are very rare. To that end, we report a mononuclear CrII complex competent for the 4-electron reduction of dioxygen (O2) and nitrosoarenes. These systems additionally engage in facile two-electron group transfer reactivity, including O atom excision and nitrene transfer. Structural, spectroscopic, and computational studies support bond activation processes that intimately occur at a mononuclear chromium(phosphinimide) center and highlight the unusual structural responsiveness of the phosphinimides in stabilizing a range of metal redox states.
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Affiliation(s)
- Charles
C. Winslow
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
| | - Paul Rathke
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
| | - Jonathan Rittle
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
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2
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Nazarchuk EV, Siidra OI, Charkin DO, Kalmykov SN, Kotova EL. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems: synthesis and crystal structures of Rb2[(UO2)(Cr2O7)(NO3)2] and two new polymorphs of Rb2Cr3O10. Z KRIST-CRYST MATER 2021. [DOI: 10.1515/zkri-2020-0078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Three new rubidium polychromates, Rb2[(UO2)(Cr2O7)(NO3)2] (1), γ-Rb2Cr3O10 (2) and δ-Rb2Cr3O10 (3) were prepared by combination of hydrothermal treatment at 220 °C and evaporation of aqueous solutions under ambient conditions. Compound 1 is monoclinic,
P
2
1
/
c
$P{2}_{1}/c$
, a = 13.6542(19), b = 19.698(3), c = 11.6984(17) Å, β = 114.326(2)°, V = 2867.0(7) Å3, R
1 = 0.040; 2 is hexagonal,
P
6
3
/
m
$P{6}_{3}/m$
, a = 11.991(2), c = 12.828(3) Å, γ = 120°, V = 1597.3(5) Å3, R
1 = 0.031; 3 is monoclinic,
P
2
1
/
n
$P{2}_{1}/n$
, a = 7.446(3), b = 18.194(6), c = 7.848(3) Å, β = 99.953(9)°, V = 1047.3(7) Å3, R
1 = 0.037. In the crystal structure of 1, UO8 bipyramids and NO3 groups share edges to form [(UO2)(NO3)2] species which share common corners with dichromate Cr2O7 groups producing novel type of uranyl dichromate chains [(UO2)(Cr2O7)(NO3)2]2−. In the structures of new Rb2Cr3O10 polymorphs, CrO4 tetrahedra share vertices to form Cr3O10
2− species. The trichromate groups are aligned along the 63 screw axis forming channels running in the ab plane in the structure of 2. The Rb cations reside between the channels and in their centers completing the structure. The trichromate anions are linked by the Rb+ cations into a 3D framework in the structure of 3. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems is discussed.
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Affiliation(s)
- Evgeny V. Nazarchuk
- Department of Crystallography , St. Petersburg State University , University Emb. 7/9, 199034 St. Petersburg , Russia
| | - Oleg I. Siidra
- Department of Crystallography , St. Petersburg State University , University Emb. 7/9, 199034 St. Petersburg , Russia
- Kola Science Center, Russian Academy of Sciences , Apatity, 184200 Murmansk Region , Russia
| | - Dmitry O. Charkin
- Department of Chemistry , Moscow State University , Leninskie Gory 1, 119991 Moscow , Russia
| | - Stepan N. Kalmykov
- Department of Chemistry , Moscow State University , Leninskie Gory 1, 119991 Moscow , Russia
| | - Elena L. Kotova
- St. Petersburg Mining University , 21st Line , St. Petersburg 199106 , Russia
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3
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One-dimensional coordination polymers constructed from copper(II) ions and chromato bridges: Synthesis, crystal structures and thermal analysis. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Bio-relevant cobalt(II) complexes with compartmental polyquinoline ligand: Synthesis, crystal structures and biological activities. J Inorg Biochem 2015; 145:19-29. [DOI: 10.1016/j.jinorgbio.2014.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 11/11/2014] [Accepted: 11/12/2014] [Indexed: 11/21/2022]
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5
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New coordination polymers with chromato bridges: 1∞[Ni(phen)(H2O)2(μ-O2CrO2)] and 3∞[Mn(4,4′-bipy)(H2O)(μ-O3CrO)]·H2O. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Johnston CP, Chrysochoou M. Investigation of chromate coordination on ferrihydrite by in situ ATR-FTIR spectroscopy and theoretical frequency calculations. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:5851-5858. [PMID: 22578108 DOI: 10.1021/es300660r] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chromate mobility, reactivity, and bioavailability in soil environments are affected by adsorption reactions on iron oxide minerals, but the adsorption mechanisms remain controversial. In this study, we employed in situ attenuated total reflectance Fourier transform infrared spectroscopy and theoretical frequency calculations to characterize chromate adsorption on 2-line ferrihydrite. The effects of pH, aqueous chromate concentration, ionic strength, and deuterium exchange were investigated. Results suggest the formation of monodentate and bidentate surface complexes. It was determined that monodentate complexes are dominant at low surface coverage and pH ≥ 6.5 and that bidentate complexes form at high surface coverage and pH < 6. Deuterium exchange experiments indicated that the inner-sphere complexes are not protonated. Difference spectra revealed that monodentate complexes are particularly susceptible to ionic strength effects under acidic conditions.
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Affiliation(s)
- Chad P Johnston
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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7
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Sundberg MR, Valo J, Uggla R, Melnik M. Conformational diversity of dichromate dianion. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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8
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Wojciechowska A, Pietraszko A, Bronowska W, Staszak Z, Jezierska J, Cieślak-Golonka M. Geometric distortions of octahedral cations and tetrahedral anions in disordered [Cu(bpy)3]CrO4·7.5H2O crystal – A comparative study. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.06.003] [Citation(s) in RCA: 7] [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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9
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Sahin O, Memon S, Yilmaz M. Synthesis of Chiral Calix[4]arene Derivative and Evaluation of its Recognition Properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2009. [DOI: 10.1080/10601320903394405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Synthesis and characterization of novel calix[4]arene piperazine derivative for the extraction of transition metals and dichromate ions. J INCL PHENOM MACRO 2009. [DOI: 10.1007/s10847-009-9709-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Tabakci M, Ersoz M, Yilmaz M. A Calix[4]arene‐Containing Polysiloxane Resin for Removal of Heavy Metals and Dichromate Anion. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320500405901] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mustafa Tabakci
- a Department of Chemistry , Selcuk University , Konya , Turkey
| | - Mustafa Ersoz
- a Department of Chemistry , Selcuk University , Konya , Turkey
| | - Mustafa Yilmaz
- a Department of Chemistry , Selcuk University , Konya , Turkey
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12
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Memon S, Tabakci M, Roundhill DM, Yilmaz M. Synthesis and evaluation of the Cr(VI) extraction ability of amino/nitrile calix[4]arenes immobilized onto a polymeric backbone. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2006.03.017] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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14
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Chen XD, Mak TCW. Order of the coordinating ability of polyatomic monoanions established from their interaction with a disilver(i) metallacyclophane skeleton. Chem Commun (Camb) 2005:3529-31. [PMID: 16010313 DOI: 10.1039/b505919d] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ordered sequence of the coordinating ability of a series of polyatomic monoanions has been established on the basis of structural parameters derived from their interaction with a disilver(I) metallacyclophane skeleton in isostructural complexes.
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Affiliation(s)
- Xu-Dong Chen
- Department of Chemistry, Chinese University of Hong Kong, New Territories, Hong Kong SAR, PR China
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15
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16
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Memon S, Roundhill DM, Yilmaz M. Remediation and Liquid-Liquid Phase Transfer Extraction of Chromium(VI). A Review. ACTA ACUST UNITED AC 2004. [DOI: 10.1135/cccc20041231] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Chromium(VI) is a widely used industrial chemical, and is generally considered to pose a greatest human health risk because it is more toxic, more soluble, and more mobile than chromium(III). Workers in industries that use chromium, in particular stainless steel welding, chromate production, chromium plating, and chrome pigment industries, where exposure via inhalation of aerosols is primarily to hexavalent chromium, are at increased risk of chromium effects. In this article we demonstrate various studies regarding remediation methods in particular liquid-liquid extraction of chromate and dichromate anions with various functionalized calixarenes. This review article briefly discusses various molecular designs of calixarene-type macrocycles for chromium(VI) oxoanion recognition, and gives examples on the relationship between structure and selectivity. The article does not, however, attempt to cover all of the different approaches to chromium(VI) extraction. A review with 73 references.
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Aldrich MV, Gardea-Torresdey JL, Peralta-Videa JR, Parsons JG. Uptake and reduction of Cr(VI) to Cr(III) by mesquite (Prosopis spp.): chromate-plant interaction in hydroponics and solid media studied using XAS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2003; 37:1859-64. [PMID: 12775058 DOI: 10.1021/es0208916] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Chromium (Cr) is a well-established carcinogen that is a contaminant at half of the EPA Superfund sites in the United States. Two separate studies were performed to investigate the possibility that mesquite (Prosopis spp.), which is an indigenous desert plant species, can remove Cr from the environment via active transport systems to the aerial portions of the plant. The first study was performed by growing mesquite on solid media (agar) at Cr(VI) concentrations of 75 and 125 ppm. The accumulation found in the leaves under the present conditions indicated that mesquite could be classified as a hyperaccumulator of chromium. The second study was conducted to investigate the differences between the type of Cr ligand involved in Cr uptake with agar and hydroponic cultures. We used X-ray absorption spectroscopy (XAS) to determine the mechanisms involved in the uptake and binding of Cr(VI) in live mesquite tissue. The XAS results for this study showed that some of the supplied Cr(VI) was uptaken by the mesquite roots; however, the data analyses of the plant tissues demonstrated that it was fully reduced to Cr(III) in the leaf tissues. Experiments are currently being performed to evaluate the behavior of the Mesquite plant using lower Cr concentrations.
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Affiliation(s)
- M V Aldrich
- Department of Chemistry and Environmental Science and Engineering, University of Texas at El Paso, El Paso, Texas 79968, USA
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18
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Gili P, Mederos A, Lorenzo-Luis PA, de la Rosa EM, Muñoz A. On the interaction of compounds of chromium(VI) with hydrogen peroxide. A study of chromium(VI) and (V) peroxides in the acid–basic pH range. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(01)00747-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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20
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Spectroscopic and structural studies of chromate ions in zinc complexes with 2,2′-bipyridine. Analysis of the lowest triplet states in the CrO42− entity. Polyhedron 2001. [DOI: 10.1016/s0277-5387(01)00806-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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