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Abdul Salam AA, Nayek U, Mathew G, Unnikrishnan M. Structural, CSD, and computational studies of 6b, 11b-Dihydroxy-6b, 11-b-dihydro-7H-indeno[1,2-b]naptho[2,1-d]furan-7-one, a therapeutic potential small molecule. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Dey SK, Archana, Pereira S, Harmalkar SS, Mhaldar SN, Gobre VV, Janiak C. Selective encapsulation and extraction of hydrogenphosphate by a hydrogen bond donor tripodal receptor. CrystEngComm 2020. [DOI: 10.1039/d0ce00834f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Intramolecular N–H⋯OC hydrogen bonding between the inner amide groups dictates the receptor–anion complementarity in a tripodal receptor towards selective encapsulation of hydrogenphosphate in the outer urea cavity by multiple hydrogen bonds.
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Affiliation(s)
| | - Archana
- School of Chemical Sciences
- Goa University
- Taleigao Plateau
- India
| | - Sybil Pereira
- School of Chemical Sciences
- Goa University
- Taleigao Plateau
- India
| | | | | | | | - Christoph Janiak
- Institute for Inorganic and Structural Chemistry
- Heinrich-Heine University Dusseldorf
- 40225 Dusseldorf
- Germany
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Bengiat R, Gil M, Klein A, Bogoslavsky B, Cohen S, Yardeni G, Zilbermann I, Almog J. Crystal structure of (acetato-κO)(ethanol-κO)[(9S,17S,21S,29S)-9,17,21,29-tetra-hydroxy-18,30-dioxa-octa-cyclo-[18.10.0.0(2,7).0(8,19).0(9,17).0(11,16).0(21,29).0(23,28)]triaconta-1,3,5,7,11(16),12,14,19,23(28),24,26-undeca-ene-10,22-dione-κ(3) O (18),O (21),O (22)]caesium ethanol monosolvate. Acta Crystallogr E Crystallogr Commun 2016; 72:884-7. [PMID: 27555923 PMCID: PMC4992898 DOI: 10.1107/s2056989016008860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 06/01/2016] [Indexed: 11/11/2022]
Abstract
The title compound, [Cs(CH3COO)(C28H16O8)(C2H5OH)]·C2H5OH, is the product of the complexation between one vasarene analogue [1], bis ninhydrin naphthalene-1,3-diol and CsF, where the F(-) ion has reacted with residual acetic acid (AcOH), to form a [1]·CsOAc complex. The inter-molecular inter-actions with the multiple oxygen-containing functional groups of the ligand, as well as O-H⋯O hydrogen bonds involving the ethanol solvent mol-ecules, stabilize the complex, forming a chain along [100]. Additional parallel-displaced π-π stacking, with an inter-planar distance of 3.669 (1) Å, connect several unit cells in a three-dimensional supra-molecular structure, though, the larger size of AcO(-) (1.60 Å) compared to F(-) (1.33 Å) prevents the tight packing that was once achieved with other vasarene complexes of CsF.
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Affiliation(s)
- Ravell Bengiat
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Maayan Gil
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Asne Klein
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Benny Bogoslavsky
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Shmuel Cohen
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Guy Yardeni
- Department of Chemistry, Nuclear Research Centre Negev, Beer Sheva, 84190, Israel
| | - Israel Zilbermann
- Department of Chemistry, Nuclear Research Centre Negev, Beer Sheva, 84190, Israel
| | - Joseph Almog
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
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Bengiat R, Gil M, Klein A, Bogoslavsky B, Cohen S, Dubnikova F, Yardeni G, Zilbermann I, Almog J. Selective recognition of fluoride salts by vasarenes: a key role of a self-assembled in situ dimeric entity via an exceptionally short [O-H-O](-) H-bond. Dalton Trans 2016; 45:8734-9. [PMID: 26804131 DOI: 10.1039/c5dt04171f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A self-assembled supramolecular dimeric entity via an exceptionally short (2.404 Å) and strong (22.9 kcal mol(-1)) [O-H-O](-) hydrogen bond is the key to the special reactivity of vasarenes with fluoride salts. Vasarene is a self-assembled, vase-shaped compound, obtained by the reaction between ninhydrin and phloroglucinol. Analogous compounds are prepared by replacing the phloroglucinol with other polyhydroxy aromatics. Vasarenes show special affinity towards compounds of the type M(+)F(-), where M being a large monovalent cation, producing ion-pair-vasarene adducts. The first step in the proposed mechanism is the dissociation of the M(+)F(-) salt releasing F(-) to the solution, which may provide an explanation as to why only MF salts, which include large monovalent cations, undergo this reaction. From a practical point of view, the ease of their preparation and their special affinity towards fluoride salts make vasarenes potential means for salt separation. The readily formed dimeric structure with the very short [O-H-O](-) negative charge-assisted H-bond (-CAHB) can also be further used as a model in theoretical studies of such systems and understanding their role in biological processes.
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Affiliation(s)
- R Bengiat
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel.
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Bengiat R, Gil M, Klein A, Bogoslavsky B, Cohen S, Almog J. Bis(benzyl-tri-methyl-ammonium) bis-[(4SR,12SR,18RS,26RS)-4,18,26-trihy-droxy-12-oxido-13,17-dioxahepta-cyclo-[14.10.0.0(3,14).0(4,12).0(6,11).0(18,26).0(19,24)]hexa-cosa-1,3(14),6,8,10,15,19,21,23-nona-ene-5,25-dione] sesquihydrate: dimeric structure formation via [O-H-O](-) negative charge-assisted hydrogen bonds (-CAHB) with benzyl-tri-methyl-ammonium counter-ions. Acta Crystallogr E Crystallogr Commun 2016; 72:399-402. [PMID: 27006816 PMCID: PMC4778823 DOI: 10.1107/s2056989016002899] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 02/17/2016] [Indexed: 06/05/2023]
Abstract
The reaction between bis-ninhydrin resorcinol and benzyl-tri-methyl-ammonium fluoride in ethanol has produced the title compound, 2C10H16N(+)·2C24H13O8 (-)·1.5H2O, which contains a unique centrosymmetric supra-molecular dimeric entity, where two deprotonated ligands are held together via two strong and short [O⋯O = 2.4395 (13) Å] [O-H-O](-) bonds of the type negative charge-assisted hydrogen bonds (-CAHB). The central aromatic rings of the ligands create parallel-displaced π-π stacking at an inter-planar distance of 3.381 (1) Å, which helps stabilize the dimer. In the crystal, two symmetry-related solvent water mol-ecules with a site occupancy of 0.75 are attached to the carbonyl groups of the dimer by weaker O-H⋯O hydrogen bonds, forming chains along [101].
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Affiliation(s)
- Ravell Bengiat
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Maayan Gil
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Asne Klein
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Benny Bogoslavsky
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Shmuel Cohen
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Joseph Almog
- The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
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