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Thapa S, Meng L, Hettiarachchi E, Bader YK, Dickie DA, Rubasinghege G, Ivanov SA, Vreeland EC, Qin Y. Charge-Separated and Lewis Paired Metal-Organic Framework for Anion Exchange and CO 2 Chemical Fixation. Chemistry 2020; 26:13788-13791. [PMID: 32619313 DOI: 10.1002/chem.202002823] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/01/2020] [Indexed: 11/10/2022]
Abstract
Charge-separated metal-organic frameworks (MOFs) are a unique class of MOFs that can possess added properties originating from the exposed ionic species. A new charge-separated MOF, namely, UNM-6 synthesized from a tetrahedral borate ligand and Co2+ cation is reported herein. UNM-6 crystalizes into the highly symmetric P43n space group with fourfold interpenetration, despite the stoichiometric imbalance between the B and Co atoms, which also leads to loosely bound NO3 - anions within the crystal structure. These NO3 - ions can be quantitatively exchanged with various other anions, leading to Lewis acid (Co2+ ) and Lewis base (anions) pairs within the pores and potentially cooperative catalytic activities. For example, UNM-6-Br, the MOF after anion exchange with Br- anions, displays high catalytic activity and stability in reactions of CO2 chemical fixation into cyclic carbonates.
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Affiliation(s)
- Sheela Thapa
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03-2060 1 UNM, Albuquerque, NM, 87131, USA
| | - Lingyao Meng
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03-2060 1 UNM, Albuquerque, NM, 87131, USA
| | - Eshani Hettiarachchi
- Department of Chemistry, New Mexico Institute of Mining and Technology, 801 Leroy Pl., Socorro, NM 87801, USA
| | - Yousef K Bader
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03-2060 1 UNM, Albuquerque, NM, 87131, USA
| | - Diane A Dickie
- Department of Chemistry, University of Virginia, 409 McCormick Rd., Charlottesville, VA, 22904, USA
| | - Gayan Rubasinghege
- Department of Chemistry, New Mexico Institute of Mining and Technology, 801 Leroy Pl., Socorro, NM 87801, USA
| | - Sergei A Ivanov
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Bikini Atoll Rd., SM30, Los Alamos, NM 87801, USA
| | - Erika C Vreeland
- IR Dynamics, LLC, 6901 Gruber Ave. NE, Suite G, Albuquerque, NM, 87109, USA
| | - Yang Qin
- Department of Chemistry & Chemical Biology, University of New Mexico, MSC03-2060 1 UNM, Albuquerque, NM, 87131, USA
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Zhang K, Qu C, Liang Z, Gao S, Zhang H, Zhu B, Meng W, Fu E, Zou R. Highly Dispersed Co-B/N Codoped Carbon Nanospheres on Graphene for Synergistic Effects as Bifunctional Oxygen Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2018; 10:30460-30469. [PMID: 30101584 DOI: 10.1021/acsami.8b11726] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Oxygen reduction and evolution reactions as two important electrochemical energy conversion processes in metal-air battery devices have aroused widespread concern. However, synthesis of low-cost non-noble metal-based bifunctional high-performance electrocatalysts is still a great challenge. In this work, we report on the design and synthesis of a novel Co-B/N codoped carbon with core-shell-structured nanoparticles aligned on graphene nanosheets (denoted as CoTIB-C/G) derived from cobalt tetrakis(1-imidazolyl)borate (CoTIB) and graphene oxide hybrid template. Compared with pristine CoTIB-derived bulk structure (CoTIB-C), CoTIB-C/G particles with an average size of 25 nm are uniformly dispersed on highly conductive graphene sheets in the hybrid material, thus dramatically increasing the utilization efficiency and activity of the active components upon oxygen reduction and evolution. After all, because of the "barrier effect" of graphene sheets toward CoTIB-C/G and the synergistic effect between Co nanoparticles and carbon shells linked to the graphene sheets, as well as heteroatoms' doping effect, the as-obtained bifunctional electrocatalyst exhibits remarkable oxygen reduction and evolution reaction activities in alkaline media, indicating its feasibility and potential in practical applications.
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3
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Campbell CJ, Muetterties AT, Chan BC, Reisner BA. New polymorphs of hydrotris(1,2,4-triazolyl)borate complexes with M2+ cations (M = Fe, Co, Ni, Zn). Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.001] [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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4
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Thapa S, Hettiarachchi E, Dickie DA, Rubasinghege G, Qin Y. A charge-separated diamondoid metal–organic framework. Chem Commun (Camb) 2018; 54:12654-12657. [PMID: 30357151 DOI: 10.1039/c8cc07098a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Metal–organic framework with diamondoid structure constructed with precisely placed tetrahedral borate anions and copper(i) cations.
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Affiliation(s)
- Sheela Thapa
- Department of Chemistry & Chemical Biology
- University of New Mexico
- Albuquerque
- USA
| | | | - Diane A. Dickie
- Department of Chemistry & Chemical Biology
- University of New Mexico
- Albuquerque
- USA
| | - Gayan Rubasinghege
- Department of Chemistry
- New Mexico Institute of Mining and Technology
- Socorro
- USA
| | - Yang Qin
- Department of Chemistry & Chemical Biology
- University of New Mexico
- Albuquerque
- USA
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5
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Zhang Y, Lu D, Zhang JJ, Wu C. Synthesis and characterization of imidazolium poly(azolyl)borate ionic liquids and their potential application in SO2 absorption. RSC Adv 2016. [DOI: 10.1039/c6ra10356a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New imidazolium poly(azolyl)borate ionic liquids (ILs) were synthesized by salt metathesis, and they can absorb SO2 through multi-site interactions at 20 °C, 0.1 MPa SO2 with the highest SO2 capacity of 5.8 mol mol−1 of IL and 1.05 g g−1 of IL.
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Affiliation(s)
- Y. Zhang
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - D. Lu
- Department of Applied Chemistry
- School of Science
- Xi'an Jiaotong University
- Xi'an
- China
| | - J.-J. Zhang
- Department of Applied Chemistry
- School of Science
- Xi'an Jiaotong University
- Xi'an
- China
| | - C. Wu
- Frontier Institute of Science and Technology
- Xi'an Jiaotong University
- Xi'an
- China
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6
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Chen LY, Zhang JG, Zhou ZN, Zhang TL. A biography of potassium complexes as versatile, green energetic materials. RSC Adv 2016. [DOI: 10.1039/c6ra22525j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
This review covers flourishing green potassium complexes that have been developed as energetic materials.
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Affiliation(s)
- Li-Yang Chen
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Jian-Guo Zhang
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Zun-Ning Zhou
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing
- P. R. China
| | - Tong-Lai Zhang
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing
- P. R. China
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7
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Lund H, Harloff J, Schulz A, Villinger A. [B(O-C6H4-CN)4]-based Silver and Copper Coordination Polymers. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201400150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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Noh K, Ko N, Park HJ, Park S, Kim J. Two porous metal–organic frameworks containing zinc–calcium clusters and calcium cluster chains. CrystEngComm 2014. [DOI: 10.1039/c4ce01237b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two noble Ca-based metal–organic frameworks exhibit the largest surface areas and the highest CO2 adsorption capacity at 298 K and 1 bar among the Ca-based MOFs reported so far.
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Affiliation(s)
- Kyungkyou Noh
- Institute for Integrative Basic Sciences
- Department of Chemistry
- Soongsil University
- Seoul 156-743, Korea
| | - Nakeun Ko
- Institute for Integrative Basic Sciences
- Department of Chemistry
- Soongsil University
- Seoul 156-743, Korea
| | - Hye Jeong Park
- Institute for Integrative Basic Sciences
- Department of Chemistry
- Soongsil University
- Seoul 156-743, Korea
| | - SangYoun Park
- School of Systems Biomedical Science
- Soongsil University
- Seoul 156-743, Korea
| | - Jaheon Kim
- Institute for Integrative Basic Sciences
- Department of Chemistry
- Soongsil University
- Seoul 156-743, Korea
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9
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Klapötke TM, Rusan M, Sproll V. Preparation of Energetic Poly(azolyl)borates as New Environmentally Benign Green-Light-Emitting Species for Pyrotechnics. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300259] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Chen ML, Hou YH, Xia WS, Zhou ZH. Structures and thermal properties of strontium and barium 1,3-propanediaminetetraacetates. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.788693] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mao-Long Chen
- a State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , China
| | - Yu-Hui Hou
- a State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , China
| | - Wen-Sheng Xia
- a State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , China
| | - Zhao-Hui Zhou
- a State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters , College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , China
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11
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Jayaramulu K, Kumar N, Hazra A, Maji TK, Rao CNR. A Nanoporous Borocarbonitride (BC4N) with Novel Properties Derived from a Boron-Imidazolate-Based Metal-Organic Framework. Chemistry 2013; 19:6966-70. [DOI: 10.1002/chem.201300054] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Indexed: 11/09/2022]
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12
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Chen Z, Luo D, Luo X, Kang M, Lin Z. Two-dimensional assembly of tetrahedral chalcogenide clusters with tetrakis(imidazolyl)borate ligands. Dalton Trans 2012; 41:3942-4. [DOI: 10.1039/c2dt12043g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Zurawski A, Rybak JC, Meyer LV, Matthes PR, Stepanenko V, Dannenbauer N, Würthner F, Müller-Buschbaum K. Alkaline earth imidazolate coordination polymers by solvent free melt synthesis as potential host lattices for rare earth photoluminescence: x∞[AE(Im)2(ImH)2–3], Mg, Ca, Sr, Ba, x = 1–2. Dalton Trans 2012; 41:4067-78. [DOI: 10.1039/c2dt12047j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Francke R, Cericola D, Kötz R, Waldvogel SR. Azolylborates for Electrochemical Double Layer Capacitor Electrolytes. Z PHYS CHEM 2011. [DOI: 10.1524/zpch.2012.0174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Asymmetric tetraalkylammonium salts of azolylborates were synthesized and studied with respect to their suitability as supporting electrolytes in electrochemical double layer capacitors. In contrast to current conducting salts used in this device, azolylborates exhibit an excellent stability towards thermal load and moisture. In addition to good conductivity and stability towards cathodic reduction we found certain limitations when more positive potentials were applied.
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Affiliation(s)
- Robert Francke
- Mainz University, Institute for Organic Chemistry, Mainz, Deutschland
| | - D. Cericola
- Paul-Scherrer-Institute, Villigen PSI, Schweiz
| | - R. Kötz
- Paul-Scherrer-Institute, Villigen PSI, Schweiz
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15
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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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16
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Zhang J, Chen S, Bu X. The first anionic four-connected boron imidazolate framework. Dalton Trans 2010; 39:2487-9. [DOI: 10.1039/b925714d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Li H, Xu Y, Hoven CV, Li C, Seo JH, Bazan GC. Molecular Design, Device Function and Surface Potential of Zwitterionic Electron Injection Layers. J Am Chem Soc 2009; 131:8903-12. [DOI: 10.1021/ja9018836] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huaping Li
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
| | - Yunhua Xu
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
| | - Corey V. Hoven
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
| | - Chunzeng Li
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
| | - Jung Hwa Seo
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
| | - Guillermo C. Bazan
- Departments of Materials and Chemistry & Biochemistry, Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, and Veeco Instruments, 112 Robin Hill Road, Santa Barbara, California 93117
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18
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Dietzel PDC, Blom R, Fjellvåg H. Base-Induced Formation of Two Magnesium Metal-Organic Framework Compounds with a Bifunctional Tetratopic Ligand. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701284] [Citation(s) in RCA: 277] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Chen Z, Fei Z, Zhao D, Feng Y, Yu K. Synthesis, characterization and X-ray crystal structures of lithium coordination polymer from cyclobutane-1,1-dicarboxylic acid. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2006.09.013] [Citation(s) in RCA: 7] [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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21
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Bailey PJ, Lorono-Gonzales D, McCormack C, Millican F, Parsons S, Pfeifer R, Pinho PP, Rudolphi F, Sanchez Perucha A. Reaction of Azole Heterocycles with Tris(dimethylamino)borane, a New Method for the Construction of Tripodal Borate-Centred Ligands. Chemistry 2006; 12:5293-300. [PMID: 16528790 DOI: 10.1002/chem.200501323] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Reaction of 2-mercapto-1-methylimidazole (methimazole) with tris(dimethylamino)borane, B(NMe2)3, provides the tetrahedral dimethylamine adduct of tris(methimazolyl)borane, [(Me2HN)B(methimazolyl)3]. By contrast, imidazole, 2-methylimidazole, 2-chloroimidazole and benzimidazole provide the homoleptic tetra-azolyl systems H[B(azolyl)4], and the same product is obtained even when a substoichiometric quantity of the heterocyle is employed. The change in reaction outcome is correlated with the variation of basic pKa for the heterocycles. A simple acid-base reaction with elimination of HNMe2 is proposed for the reaction with the weakly basic, but more strongly acidic, methimazole. However, for the more strongly basic imidazoles, initial coordination of the heterocycle imine nitrogen to the weakly Lewis acidic boron centre in B(NMe2)3 to form the tetrahedral adduct [(azole)B(NMe2)3] is proposed. The greater availability of the NMe2 lone pairs in this species results in increased basicity and a rapid reaction with further heterocycle to provide the observed H[B(azolyl)4] products. For 2-nitroimidazole, the low basicity (and increased N-H acidity) results in the formation of [(HNMe2)B(2-nitroimidazolyl)3] on reaction with B(NMe2)3, analogous to the product formed with methimazole. Both [(HNMe2)B(methimazolyl)3] and H[B(benzimidazolyl)4] have been structurally characterised by single crystal X-ray crystallography. This chemistry has been exploited to provide a new synthesis of borate-centred tripod ligands, whereby N-methylimidazole is used to activate B(NMe2)3 to reaction with methimazole to form the new ligand [(N-methylimidazole)B(methimazolyl)3] in good yield and a complex of this ligand with Ru(II) has been structurally characterised.
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Affiliation(s)
- Philip J Bailey
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH 9 3 JJ, UK.
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22
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1-Dimensional and 2-dimensional coordination network structures in the Ba–Ce–dipicH2 system (dipicH2=dipicolinic acid). Polyhedron 2005. [DOI: 10.1016/j.poly.2005.03.104] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hamilton BH, Ziegler CJ. Lead and Thallium Tetrakis(imidazolyl)borates: Modifying Structure by Varying Metal and Anion. Inorg Chem 2004; 43:4272-7. [PMID: 15236540 DOI: 10.1021/ic0497984] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We are using the coordinating anions tetrakis(imidazolyl)borate and tetrakis(4-methylimidazolyl)borate to construct new metal-organic framework structures. In this report, we are exploring materials similar in composition to the previously reported layered network structure Pb[B(Im)(4)](NO(3))(nH(2)O). The metal in this compound can be replaced with isoelectronic Tl(I), affording Tl[B(Im)(4)], and the borate can be modified by using 4-methylimidazole, resulting in Pb[B(4-MeIm)(4)](NO(3)) and Tl[B(4-MeIm)(4)]. Like the parent Pb[B(Im)(4)](NO(3))(nH(2)O), Tl[B(Im)(4)] and Tl[B(4-MeIm)(4)] are layered network structures but both lack anions or solvent molecules in the interlayer spacing. The material Pb[B(4-MeIm)(4)](NO(3)), however, exhibits a 3D network structure that lacks an open topology, resulting from the increased stereochemical activity (greater steric bulk toward other ligands) of the 4-methylimidazole ring. Both of the Tl(I) solids display longer M-N bonds than observed in the analogous Pb(II) compounds; these lengths account for the decreased effect of the stereochemical activity of the 4-methylimidazole ring in Tl[B(4-MeIm)(4)].
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Affiliation(s)
- Barton H Hamilton
- Department of Chemistry, Knight Chemical Laboratory, University of Akron, Akron, Ohio 44325-3601, USA
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Halper SR, Malachowski MR, Delaney HM, Cohen SM. Heteroleptic Copper Dipyrromethene Complexes: Synthesis, Structure, and Coordination Polymers. Inorg Chem 2004; 43:1242-9. [PMID: 14966958 DOI: 10.1021/ic0352295] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of neutral [Cu(dpm)2] and [Cu(dpm)(acac)] (dpm = dipyrromethene, acac = acetylacetonato) complexes is presented. The formation of the asymmetric metal complexes was monitored by electronic absorption and infrared spectroscopy. Two of the complexes investigated, containing pyrdpm ligands (pyrdpm = pyridyldipyrromethene), form 1-dimensional coordination polymers. The coordination polymers formed by these complexes have been characterized by single-crystal X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. The complexes possess square pyramidal coordination geometries with the apical position occupied by the meso-pyridyl donor of a neighboring complex in the crystal lattice. The features of these coordination complexes that facilitate formation of extended solids have been probed. Symmetric [Cu(pyrdpm)2] complexes are unable to form coordination solids due to steric hindrance at the metal center. Use of cyano donors in complexes such as [Cu(cydpm)(acac)] (cydpm = cyanodipyrromethene) in lieu of pyridyl donors also fail to form network solids. Through these systematic studies, both the basic coordination chemistry of these complexes and the fundamental design requirements for synthesizing this novel class of coordination polymers have been defined.
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Affiliation(s)
- Sara R Halper
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA
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Hamilton BH, Kelly KA, Wagler TA, Espe MP, Ziegler CJ. Lead Tetrakis(imidazolyl)borate Solids: Anion Exchange, Solvent Intercalation, and Self Assembly of an Organic Anion. Inorg Chem 2003; 43:50-6. [PMID: 14704053 DOI: 10.1021/ic035117d] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The coordination polymer Pb[B(Im)(4)](NO(3))(xH(2)O), constructed by using sodium tetrakis(imidazolyl)borate and lead(II) nitrate solutions, is a layered material with the metal centers facing the interlayer spacing. As in naturally occurring layered minerals, this compound can readily undergo anion exchange and reversible intercalation of solvent water in the solid state with retention of crystallinity. We observed changes in solvent intercalation by (207)Pb solid state NMR (SSNMR) and thermogravimetric analysis (TGA). Stoichiometric exchange of (15)N nitrate for nitrate and iodide for nitrate is monitored by (15)N and (207)Pb SSNMR, and single crystals of the iodide-exchanged material Pb[B(Im)(4)]I were isolated. While the iodide compound can be obtained through facile exchange from the nitrate parent compound, the organic anion benzoate is placed in the interlayer spacing for nitrate under self-assembly conditions and forms an alternating monolayer in Pb[B(Im)(4)](C(6)H(5)COO)(0.5H(2)O). The ion exchange versus self-assembly behavior correlates with the structural differences in the three compounds. In both Pb[B(Im)(4)]I and Pb[B(Im)(4)](C(6)H(5)COO)(0.5H(2)O), the lead sites act as Lewis acids for the iodide and benzoate, respectively.
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Affiliation(s)
- Barton H Hamilton
- Department of Chemistry, Knight Chemical Laboratory, University of Akron, Akron, Ohio 44325-3601, USA
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