1
|
Grigoriev MS, Charushnikova IA, Fedoseev AM. Np(V) dicyanamide complexes with electroneutral N-donor ligands. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2022-0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Three new complexes of Np(V) dicyanamide with electroneutral N-donor ligands have been synthesized and structurally characterized: two with terpyridine derivatives: [(NpO2)(Cl-Terpy)(DMA)(N(CN)2)]·0.5DMA (1), [(NpO2)(TPTZ)(N(CN)2)(H2O)]·2H2O·CH3OH (2) and a dimeric complex with bipyridine [(NpO2)(Bipy)(N(CN)2)(H2O)]2·2(CH3OH) (3). In compounds 1–3, the coordination polyhedra of Np atoms are pentagonal bipyramids with “yl” oxygen atoms in apical positions. The equatorial plane of the bipyramids is formed by nitrogen atoms of the anions [N(CN)2]− and N-donor electroneutral ligands (Cl-Terpy, TPTZ, Bipy) and the oxygen atom of water molecule (1, 3) or DMA (2). In compounds 1 and 2, the [N(CN)2]− anions manifest themselves as monodentate ligands, and in compound 3 dicyanamide is a bidentate-bridging ligand.
Collapse
Affiliation(s)
- Mikhail S. Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , 31, bldg 4, Leninsky prosp. , Moscow 119071 , Russia
| | - Iraida A. Charushnikova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , 31, bldg 4, Leninsky prosp. , Moscow 119071 , Russia
| | - Alexandr M. Fedoseev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences , 31, bldg 4, Leninsky prosp. , Moscow 119071 , Russia
| |
Collapse
|
2
|
McKenzie R, Knoll A, Wang B, Jadhav S, Walker R, Spirrison A. Salting‐out approach (SOAP) for the synthesis of nickel‐based coordination polymer nanorods from a dicyanamide ionic liquid. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ruel McKenzie
- University of Akron College of Polymer Science and Polymer Engineering School of Polymer Science and Polymer Engineering 250 S. Forge StreetPEAC 327 44325 Akron UNITED STATES
| | - Andrew Knoll
- University of Akron College of Polymer Science and Polymer Engineering School of Polymer Science and Polymer Engineering UNITED STATES
| | - Bojie Wang
- University of Akron College of Polymer Science and Polymer Engineering School of Polymer Science and Polymer Engineering UNITED STATES
| | - Sainath Jadhav
- University of Akron College of Polymer Science and Polymer Engineering School of Polymer Science and Polymer Engineering UNITED STATES
| | - Robert Walker
- University of Mount Union Biological and Environmental Sciences UNITED STATES
| | | |
Collapse
|
3
|
Ansari SA, Wadawale AP, Verboom W, Mohapatra PK. Isolation of single crystals of a homoleptic UO 22+-diglycolamide complex from a room temperature ionic liquid: X-ray crystallography and complexation studies. NEW J CHEM 2022. [DOI: 10.1039/d1nj05760j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Complexation and structural investigations of the solid complex of UO22+ ion and TMDGA isolated from an ionic liquid for the first time revealed that the nature and structural features of the complex are identical with those of the complex isolated from the aqueous medium.
Collapse
Affiliation(s)
- Seraj A. Ansari
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai–400 085, India
| | - Amey P. Wadawale
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai–400 085, India
| | - Willem Verboom
- Molecular Nanofabrication Group, Department of Molecules & Materials, MESA+Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede 7500 AE, The Netherlands
| | | |
Collapse
|
4
|
Hou X, Tang SF. Speciation of Ionic Uranyl-Containing Complexes in in Situ Formed Dicyanonitrosomethanide-Based Ionic Liquids. Inorg Chem 2021; 60:1869-1876. [PMID: 33471501 DOI: 10.1021/acs.inorgchem.0c03316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A series of ionic uranyl-containing complexes, namely [C2mim]2[UO2(ccnm)4] (1), [C4mim]2[UO2(ccnm)4] (2), [N1111]2[UO2(ccnm)4][H2O]2 (3), and [P2444]2[UO2(dcnm)2(ccnm)2] (4) [(ccnm)- = carbamoylcyanonitrosomethanide; dcnm = dicyanonitrosomethanide; (C2mim)+ = 1-ethyl-3-methylimidazolium; (C4mim)+ = 1-butyl-3-methylimidazolium; (N1111)+ = tetramethylammonium; (P2444)+ = tributyl(ethyl)phosphonium)], were isolated from in situ formed dcnm-based ionic liquids and characterized systematically. It was found that the dcnm anions transformed into ccnm anions during the reactions. These anions coordinate with the uranyl cations in chelate or terminal monodentate coordination mode, affording negative divalent complex anions which can combine with different organic cations and form ionic uranyl-containing complexes. Plenty of C-H···O, N-H···O, C-H···N, N-H···N, and H···H weak interactions are formed in the crystal structures. The transformation of cyano to amide groups contributes to the crystallinity and leads to higher melting points as well as the luminescence quenching of these compounds.
Collapse
Affiliation(s)
- Xiaomin Hou
- Shandong Province Key Laboratory of Applied Mycology, College of Life Science, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| |
Collapse
|
5
|
Tang SF, Smetana V, Mishra MK, Kelley SP, Renier O, Rogers RD, Mudring AV. Forcing Dicyanamide Coordination to f-Elements by Dissolution in Dicyanamide-Based Ionic Liquids. Inorg Chem 2020; 59:7227-7237. [PMID: 32364712 PMCID: PMC7304860 DOI: 10.1021/acs.inorgchem.0c00667] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
A robust general
route to lanthanide dicyanamide (DCA–) complexes
has been developed where f-element salts are dissolved
in DCA–-based ionic liquids (ILs) directly or formed in situ, forcing coordination of these normally weakly coordinating
soft N-donor anions, even in an ambient, non-moisture-excluding environment.
A series of lanthanide complexes [C2mim][Ln(DCA)4(H2O)4] (C2mim = 1-ethyl-3-methylimidazolium;
Ln = La, Nd, Eu, Tb, Dy, and Yb) and [C2mim]3n[La(OH2)4(μ2-DCA)4]n[La(OH2)2(μ3-DCA)3(μ2-DCA)4]2n(Cl)4n were
crystallized under a variety of conditions using this methodology
and structurally characterized using single crystal X-ray diffraction.
Although not all examples were isostructural, the dominant feature
across the series was the presence of [Ln(DCA)4(H2O)4]− anionic nodes with all terminal
DCA– ligands accepting hydrogen bonds from the coordinated
water molecules forming a 3D metal organic framework. To determine
if any structural clues might aid in the further development of the
synthetic methodology, the metal-free IL [C1mim][DCA] (C1mim = 1,3-dimethylimidazolium), a room-temperature solid,
crystalline analogue of the reaction IL, which is liquid at room temperature,
was also prepared and structurally characterized. The ready isolation
of these compounds allowed us to begin an investigation of the physical
properties such as the luminescence at room and low temperatures for
the Eu, Tb, and Dy representatives. Direct dissolution
of lanthanide chloride hydrates in the
DCA− ionic liquids leads to coordination of DCA− anions to Ln3+ under full displacement
of chloride and partial displacement of water ligands leading to the
formation of metal organic frameworks under ambient conditions. X-ray
analyses reveal a significant influence of the hydrogen bonding and
lanthanides’ size on crystallographic disorder in their crystal
structures.
Collapse
Affiliation(s)
- Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| | - Volodymyr Smetana
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden
| | - Manish Kumar Mishra
- College of Arts & Sciences, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Steven P Kelley
- College of Arts & Sciences, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Olivier Renier
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden
| | - Robin D Rogers
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden.,College of Arts & Sciences, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Anja-Verena Mudring
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden
| |
Collapse
|
6
|
Smetana V, Kelley SP, Titi HM, Hou X, Tang SF, Mudring AV, Rogers RD. Synthesis of Anhydrous Acetates for the Components of Nuclear Fuel Recycling in Dialkylimidazolium Acetate Ionic Liquids. Inorg Chem 2020; 59:818-828. [PMID: 31841315 DOI: 10.1021/acs.inorgchem.9b03077] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A series of anhydrous acetate salts with uranium {[C2C1im][UO2(OAc)3] (1), [C2C2im][UO2(OAc)3] (2), and [C4C1im][UO2(OAc)3] (3)}, lanthanides {[C2C2im]2[La(OAc)5] (4) and [C2C1im]2[Nd(OAc)5] (5)}, and strontium {[C2C1im]n[Sr(OAc)3]n (6)} (where C2C1im = 1-ethyl-3-methylimidazolium, C2C2im = 1,3-diethylimidazolium, C4C1im = 1-butyl-3-methylimidazolium, and OAc = acetate) have been prepared and structurally characterized. Both lanthanides and strontium are common components of the nuclear fuel waste, and their separation from uranium is an important but still challenging task. A new synthetic approach with dialkylimidazolium acetate ionic liquids (ILs) as the solvent has been developed for the direct synthesis of homoleptic acetates from the corresponding hydrates and, unexpectedly, hardly soluble f-element oxides. Although the group of characterized compounds shows perfect structural variability, all actinide and lanthanide metal ions form monomeric complex anions where the metal cation coordinates to five ligands including two oxygen atoms in the case of uranium, as is commonly observed for uranyl compounds. Crystallographic analyses revealed that the complex [UO2(OAc)3]- anions possess rather standard D3h symmetry featuring a hexagonal-bipyramidal coordination environment, while the lanthanide anions [Ln(OAc)5]2- are fully asymmetric and the Ln3+ cations are 10-coordinated in the form of a distorted bicapped tetragonal antiprism. This is the first report of lanthanide ions coordinated in this fashion. For Sr2+, 9-fold coordination through oxygen atoms in the form of a strongly distorted tricapped trigonal prism is observed. The crystallization of anhydrous, homoleptic, anionic acetate complexes from such a large variety of different metal salts appears to be due to the properties of dialkylimidazolium acetate ILs themselves, including enhanced basicity from the high concentration of free anions and their greater affinity for hydrogen-bonding solutes relative to metal cations.
Collapse
Affiliation(s)
- Volodymyr Smetana
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden
| | - Steven P Kelley
- College of Arts & Sciences , The University of Alabama , Tuscaloosa , Alabama 35487 , United States
| | - Hatem M Titi
- Department of Chemistry , McGill University 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| | | | | | - Anja-Verena Mudring
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden
| | - Robin D Rogers
- Department of Materials and Environmental Chemistry , Stockholm University , Svante Arrhenius väg 16 C , 10691 Stockholm , Sweden.,College of Arts & Sciences , The University of Alabama , Tuscaloosa , Alabama 35487 , United States.,Department of Chemistry , McGill University 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada
| |
Collapse
|
7
|
Lu G, Haes AJ, Forbes TZ. Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy. Coord Chem Rev 2018; 374:314-344. [PMID: 30713345 PMCID: PMC6358285 DOI: 10.1016/j.ccr.2018.07.010] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The purpose of this review is to provide an overview of uranium speciation using vibrational spectroscopy methods including Raman and IR. Uranium is a naturally occurring, radioactive element that is utilized in the nuclear energy and national security sectors. Fundamental uranium chemistry is also an active area of investigation due to ongoing questions regarding the participation of 5f orbitals in bonding, variation in oxidation states and coordination environments, and unique chemical and physical properties. Importantly, uranium speciation affects fate and transportation in the environment, influences bioavailability and toxicity to human health, controls separation processes for nuclear waste, and impacts isotopic partitioning and geochronological dating. This review article provides a thorough discussion of the vibrational modes for U(IV), U(V), and U(VI) and applications of infrared absorption and Raman scattering spectroscopies in the identification and detection of both naturally occurring and synthetic uranium species in solid and solution states. The vibrational frequencies of the uranyl moiety, including both symmetric and asymmetric stretches are sensitive to the coordinating ligands and used to identify individual species in water, organic solvents, and ionic liquids or on the surface of materials. Additionally, vibrational spectroscopy allows for the in situ detection and real-time monitoring of chemical reactions involving uranium. Finally, techniques to enhance uranium species signals with vibrational modes are discussed to expand the application of vibrational spectroscopy to biological, environmental, inorganic, and materials scientists and engineers.
Collapse
Affiliation(s)
- Grace Lu
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, United States
| | - Amanda J. Haes
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, United States
| | - Tori Z. Forbes
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, United States
| |
Collapse
|
8
|
Kelley SP, Rachiero GP, Titi HM, Rogers RD. New Reactions for Old Ions: Cage Rearrangements, Hydrolysis, and Two-Electron Reduction of nido-Decaborane in Neat 1-Ethyl-3-Methylimidazolium Acetate. ACS OMEGA 2018; 3:8491-8496. [PMID: 31458977 PMCID: PMC6644799 DOI: 10.1021/acsomega.8b00775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/17/2018] [Indexed: 06/10/2023]
Abstract
The access to free, unsolvated ions at high concentrations and ambient temperatures enabled by ionic liquids results in previously unobserved reactivity for even well-studied ions, demonstrated here by acetate ([OAc]-) acting as a reducing agent for B10H14 but only when used as a neat liquid in [C2mim][OAc] at ambient temperature. More typical reaction products are obtained when B10H14 is reacted with [C2mim][OAc] at an elevated temperature or in the presence of strong bases.
Collapse
Affiliation(s)
- Steven P. Kelley
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec H3A 0B8, Canada
- Department of Chemistry, University of Missouri, 601 S. College Avenue, Columbia, Missouri 65201, United States
| | - Giovanni P. Rachiero
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec H3A 0B8, Canada
| | - Hatem M. Titi
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec H3A 0B8, Canada
| | - Robin D. Rogers
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montreal, Quebec H3A 0B8, Canada
- 525 Solutions, Inc., P.O. Box 2206, Tuscaloosa, Alabama 35403, United States
| |
Collapse
|