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Haque SA, Saeed MA, Jahan A, Wang J, Leszczynski J, Hossain MA. Experimental and Theoretical Aspects of Anion Complexes with a Thiophene-Based Cryptand. COMMENT INORG CHEM 2016; 36:305-326. [PMID: 28216803 PMCID: PMC5310392 DOI: 10.1080/02603594.2016.1171216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Selective recognition of anions has received a tremendous attention in recent years because of their significant importance in biology and environment. This article highlights our recent research on a thiophene-based azacryptand that has been shown to effectively bind anions including iodide, bromide, chloride, nitrate and sulfate. Structural studies indicate that the ligand forms inclusion complexes with chloride and iodide. On the other hand, it forms cleft-like complexes with nitrate and sulfate, where three anions are bound between the cyclic arms. The ligand binds each anion with a 1:1 binding mode in water, exhibiting strong selectivity for sulfate; which is further supported by ESI-MS and DFT calculations.
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Affiliation(s)
- Syed A Haque
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
| | - Musabbir A Saeed
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
| | - Afsana Jahan
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
| | - Jing Wang
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
| | - Jerzy Leszczynski
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
| | - Md Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217
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Ahmed L, Rhaman MM, Mendy JS, Wang J, Fronczek FR, Powell DR, Leszczynski J, Hossain MA. Experimental and theoretical studies on halide binding with a p-xylyl-based azamacrocycle. J Phys Chem A 2015; 119:383-94. [PMID: 25517862 PMCID: PMC4298355 DOI: 10.1021/jp511040p] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A p-xylyl-based macrocycle L has been synthesized and its binding properties with halides have been investigated by (1)H NMR titrations, single crystal X-ray diffraction analysis, and density functional theory (DFT) calculations. As investigated by (1)H NMR titrations, the ligand preferentially binds a halide in a 1:2 binding mode, with the association constants (in log K2) of 2.82, 2.70, 2.28, and 2.20 for fluoride, chloride, bromide, and iodide, respectively. The overall binding trend was found to be in the order of fluoride > chloride > bromide > iodide, reflecting that the binding strength correlates with the relative basicity and size of the respective halide. Crystallographic studies indicate that the ligand forms 1:2 complexes with chloride, bromide and iodide. In the chloride complex, the ligand is hexaprotonated and each chloride is held via three NH···Cl(-) bonds. The ligand is tetraprotonated for the other complexes, where each halide is H-bonded to two secondary ammonium NH(+) groups via NH···X(-) bonds. The results of DFT calculations performed on [H6L](6+) at M062x/6-311G (d,p) level in both gas and solvent phases, suggest that the ligand binds halides with the binding energy in the order of F(-) > Cl(-) > Br(-) > I(-), supporting the experimental data obtained from (1)H NMR studies. Results from DFT calculations further indicate that a 1:2 binding is energetically more favorable than a 1:1 binding of the ligand.
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Affiliation(s)
- Lucky Ahmed
- Department of Chemistry and Biochemistry, Jackson State University , Jackson, Mississippi 39217, United States
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Bergamaschi G, Boiocchi M, Perrone ML, Poggi A, Viviani I, Amendola V. Mixing the spacers in azacryptands: effects on halide recognition. Dalton Trans 2014; 43:11352-60. [DOI: 10.1039/c4dt00886c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Replacement of just one spacer in dicopper cryptates drastically alters the cavity's shape, thus affecting halide recognition.
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Affiliation(s)
| | | | | | - Antonio Poggi
- Dipartimento di Chimica
- Università di Pavia
- Pavia, Italy
| | - Ivan Viviani
- Dipartimento di Chimica
- Università di Pavia
- Pavia, Italy
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Pramanik A, Fronczek FR, Venkatraman R, Hossain MA. Hexa-μ-acetato-1:2κ(4) O,O';1:2κ(2) O:O;2:3κ(4) O,O';2:3κ(2) O:O-bis-(4,4'-dimethyl-2,2'-bi-pyridine)-1κ(2) N,N';3κ(2) N,N'-2-calcium-1,3-dizinc. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m643-4. [PMID: 24454160 PMCID: PMC3884985 DOI: 10.1107/s1600536813030122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 11/03/2013] [Indexed: 11/10/2022]
Abstract
In the centrosymmetric trinuclear ZnII⋯CaII⋯ZnII title complex, [CaZn2(CH3COO)6(C12H12N2)2], the CaII ion lies on an inversion centre and is octahedrally coordinated by six acetate O atoms. The ZnII ion is coordinated by two N atoms from a bidentate dimethylbipyridine ligand and three O atoms from acetate ligands bridging to the CaII ion, leading to a distorted square-pyramidal coordination sphere. The Zn⋯Ca distance is 3.4668 (5) Å.
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Affiliation(s)
- Avijit Pramanik
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Ramaiyer Venkatraman
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
| | - Md Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
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Habata Y, Ikeda M, Sah AK, Noto K, Kuwahara S. Selective Retention of Methanol over Ethanol by a Cyclen-Based Cryptand/Copper(II) Complex. Inorg Chem 2013; 52:11697-9. [DOI: 10.1021/ic4021417] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoichi Habata
- Department of Chemistry, Faculty
of Science, and ‡Research Center for Materials with Integrated Properties, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Mari Ikeda
- Department of Chemistry, Faculty
of Science, and ‡Research Center for Materials with Integrated Properties, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Ajay K. Sah
- Department of Chemistry, Faculty
of Science, and ‡Research Center for Materials with Integrated Properties, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Kanae Noto
- Department of Chemistry, Faculty
of Science, and ‡Research Center for Materials with Integrated Properties, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Shunsuke Kuwahara
- Department of Chemistry, Faculty
of Science, and ‡Research Center for Materials with Integrated Properties, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
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Pramanik A, Powell DR, Wong BM, Hossain MA. Spectroscopic, structural, and theoretical studies of halide complexes with a urea-based tripodal receptor. Inorg Chem 2012; 51:4274-84. [PMID: 22409384 PMCID: PMC3399518 DOI: 10.1021/ic202747q] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A urea-based tripodal receptor L substituted with p-cyanophenyl groups has been studied for halide anions using (1)H NMR spectroscopy, density functional theory (DFT) calculations, and X-ray crystallography. The (1)H NMR titration studies suggest that the receptor forms a 1:1 complex with an anion, showing a binding trend in the order of fluoride > chloride > bromide > iodide. The interaction of a fluoride anion with the receptor was further confirmed by 2D NOESY and (19)F NMR spectroscopy in DMSO-d(6). DFT calculations indicate that the internal halide anion is held by six NH···X interactions with L, showing the highest binding energy for the fluoride complex. Structural characterization of the chloride, bromide, and silicon hexafluoride complexes of [LH(+)] reveals that the anion is externally located via hydrogen bonding interactions. For the bromide or chloride complex, two anions are bridged with two receptors to form a centrosymmetric dimer, while for the silicon hexafluoride complex, the anion is located within a cage formed by six ligands and two water molecules.
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Affiliation(s)
- Avijit Pramanik
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39212
| | - Douglas R. Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019
| | - Bryan M. Wong
- Materials Chemistry Department, Sandia National Laboratories, Livermore, CA 94551
| | - Md. Alamgir Hossain
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39212
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Sun D, Liu FJ, Hao HJ, Li YH, Zhang N, Huang RB, Zheng LS. A novel arenedisulfonate-templated 1D silver ladder constructed from 4-aminobenzonitrile ligand. CrystEngComm 2011. [DOI: 10.1039/c1ce05622k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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