1
|
Dekhtyar ML. Brownian Photomotors Based on Organic Compounds: A Review. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09726-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
2
|
Amini H, Baranová Z, Weisbach N, Gauthier S, Bhuvanesh N, Reibenspies JH, Gladysz JA. Syntheses, Structures, and Spectroscopic Properties of 1,10-Phenanthroline-Based Macrocycles Threaded by PtC 8 Pt, PtC 12 Pt, and PtC 16 Pt Axles: Metal-Capped Rotaxanes as Insulated Molecular Wires. Chemistry 2019; 25:15896-15914. [PMID: 31596000 DOI: 10.1002/chem.201903927] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/01/2019] [Indexed: 11/05/2022]
Abstract
The platinum polyynyl complexes trans-(C6 F5 )(p-tol3 P)2 Pt(C≡C)n/2 H undergo oxidative homocoupling (O2 , CuCl/TMEDA) to diplatinum polyynediyl complexes trans, trans-(C6 F5 )(p-tol3 P)2 Pt(C≡C)n Pt(Pp-tol3 )2 (C6 F5 ) (n=4, 2; 6, 5; 8, 8; 92-97 %) as reported previously. When related reactions are conducted in the presence of CuI adducts of the 1,10-phenanthroline-based macrocycles 2,9-(1,10-phenanthrolinediyl)(p-C6 H4 O(CH2 )6 O)2 (1,3-C6 H4 ) (10, 33-membered) or 2,9-(1,10-phenanthrolinediyl)(p-C6 H4 O(CH2 )6 O)2 (2,7-naphthalenediyl) (11, 35-membered), excess K2 CO3 , and I2 (oxidant), rotaxanes are isolated that feature a Pt(C≡C)n Pt axle that has been threaded through the macrocycle (2⋅10, 9 %; 5⋅10, 41 %; 5⋅11, 28 %; 8⋅10, 12 %; 8⋅11, 9 %). Their crystal structures are determined and analyzed in detail, particularly with respect to geometric perturbations and the degree of steric sp carbon chain insulation. NMR spectra show a number of shielding effects. UV/Vis spectra do not indicate significant electronic interactions between the Pt(C≡C)n Pt axles and macrocycles, although cyclic voltammetry data suggest rapid reactions following oxidation.
Collapse
Affiliation(s)
- Hashem Amini
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Zuzana Baranová
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Nancy Weisbach
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Sébastien Gauthier
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - Joseph H Reibenspies
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| | - John A Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, 77842-3012, USA
| |
Collapse
|
3
|
Tcyrulnikov NA, Varadharajan R, Tikhomirova AA, Pattabiraman M, Ramamurthy V, Wilson RM. Modulation of Reduction Potentials of Bis(pyridinium)alkane Dications through Encapsulation within Cucurbit[7]uril. J Org Chem 2019; 84:8759-8765. [DOI: 10.1021/acs.joc.9b01049] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Nikolai A. Tcyrulnikov
- Center for Photochemical Sciences and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Ramkumar Varadharajan
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Anastasiia A. Tikhomirova
- Center for Photochemical Sciences and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Mahesh Pattabiraman
- Department of Chemistry, University of Nebraska, Kearney, Nebraska 68849, United States
| | | | - R. Marshall Wilson
- Center for Photochemical Sciences and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403, United States
| |
Collapse
|
4
|
|
5
|
Farhadi S, Gholipour A, Neyband RS, Gholipour M. Influence of rotational barrier of single-molecule electric revolving door on energies, aromaticity and quadrupole moment. Mol Phys 2016. [DOI: 10.1080/00268976.2015.1137371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
6
|
Casano G, Poulhès F, Tran TK, Ayhan MM, Karoui H, Siri D, Gaudel-Siri A, Rockenbauer A, Jeschke G, Bardelang D, Tordo P, Ouari O. High binding yet accelerated guest rotation within a cucurbit[7]uril complex. Toward paramagnetic gyroscopes and rolling nanomachines. NANOSCALE 2015; 7:12143-12150. [PMID: 26123621 DOI: 10.1039/c5nr03288a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The (15-oxo-3,7,11-triazadispiro[5.1.5.3]hexadec-7-yl)oxidanyl, a bis-spiropiperidinium nitroxide derived from TEMPONE, can be included in cucurbit[7]uril to form a strong (K(a)∼ 2 × 10(5) M(-1)) CB[7]@bPTO complex. EPR and MS spectra, DFT calculations, and unparalleled increased resistance (a factor of ∼10(3)) toward ascorbic acid reduction show evidence of deep inclusion of bPTO inside CB[7]. The unusual shape of the CB[7]@bPTO EPR spectrum can be explained by an anisotropic Brownian rotational diffusion, the global tumbling of the complex being slower than rotation of bPTO around its "long molecular axis" inside CB[7]. The CB[7] (stator) with the encapsulated bPTO (rotator) behaves as a supramolecular paramagnetic rotor with increased rotational speed of the rotator that has great potential for advanced nanoscale machines requiring wheels such as cucurbiturils with virtually no friction between the wheel and the axle for optimum wheel rotation (i.e. nanopulleys and nanocars).
Collapse
Affiliation(s)
- G Casano
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire, UMR 7273, 13013 Marseille, France.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Malberg F, Brandenburg JG, Reckien W, Hollóczki O, Grimme S, Kirchner B. Substitution effect and effect of axle's flexibility at (pseudo-)rotaxanes. Beilstein J Org Chem 2014; 10:1299-307. [PMID: 24991282 PMCID: PMC4077404 DOI: 10.3762/bjoc.10.131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 04/28/2014] [Indexed: 11/23/2022] Open
Abstract
This study investigates the effect of substitution with different functional groups and of molecular flexibility by changing within the axle from a single C-C bond to a double C=C bond. Therefore, we present static quantum chemical calculations at the dispersion-corrected density functional level (DFT-D3) for several Leigh-type rotaxanes. The calculated crystal structure is in close agreement with the experimental X-ray data. Compared to a stiffer axle, a more flexible one results in a stronger binding by 1-3 kcal/mol. Alterations of the binding energy in the range of 5 kcal/mol could be achieved by substitution with different functional groups. The hydrogen bond geometry between the isophtalic unit and the carbonyl oxygen atoms of the axle exhibited distances in the range of 2.1 to 2.4 Å for six contact points, which shows that not solely but to a large amount the circumstances in the investigated rotaxanes are governed by hydrogen bonding. Moreover, the complex with the more flexible axle is usually more unsymmetrical than the one with the stiff axle. The opposite is observed for the experimentally investigated axle with the four phenyl stoppers. Furthermore, we considered an implicit continuum solvation model and found that the complex binding is weakened by approximately 10 kcal/mol, and hydrogen bonds are slightly shortened (by up to 0.2 Å).
Collapse
Affiliation(s)
- Friedrich Malberg
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Jan Gerit Brandenburg
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Werner Reckien
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Oldamur Hollóczki
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115 Bonn, Germany
| |
Collapse
|
8
|
Gamal-Eldin MA, Macartney DH. Cucurbit[7]uril host-guest complexes and [2]pseudorotaxanes with N-methylpiperidinium, N-methylpyrrolidinium, and N-methylmorpholinium cations in aqueous solution. Org Biomol Chem 2013; 11:1234-41. [PMID: 23314170 DOI: 10.1039/c2ob27282b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The formations of host-guest complexes between cucurbit[7]uril and a series of N-substituted N-methylpiperidinium, N-methylpyrrolidinium, and N-methylmorpholinium cations in aqueous solution have been investigated using (1)H NMR spectroscopy and electrospray ionization mass spectrometry. Dications comprising the N-methylheterocyclic head groups, bridged by a decamethylene chain, form sequential 1 : 1 ([2]pseudorotaxanes) and 2 : 1 host-guest complexes with cucurbit[7]uril. The cucurbituril initially resides over the decamethylene chain, however with further additions of the host molecule a translocation of the hosts to the cationic N-heterocyclic head groups occurs. The order of the magnitude of the cucurbituril host-guest stability constants, determined by competitive (1)H NMR binding experiments, follows the trend in the hydrophobicity of the quaternary ammonium cations.
Collapse
Affiliation(s)
- Mona A Gamal-Eldin
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
| | | |
Collapse
|
9
|
Movsisyan LD, Kondratuk DV, Franz M, Thompson AL, Tykwinski RR, Anderson HL. Synthesis of Polyyne Rotaxanes. Org Lett 2012; 14:3424-6. [DOI: 10.1021/ol301392t] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Levon D. Movsisyan
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | - Dmitry V. Kondratuk
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | - Michael Franz
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | - Amber L. Thompson
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | - Rik R. Tykwinski
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| | - Harry L. Anderson
- Oxford University, Department of Chemistry, Chemistry Research Laboratory, Oxford OX1 3TA, U.K., and Department of Chemistry and Pharmacy and Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany
| |
Collapse
|
10
|
Zhang FG, Ma H, Nie J, Zheng Y, Gao Q, Ma JA. Enantioselective Diynylation of Cyclic N-Acyl Ketimines: Access to Chiral Trifluoromethylated Tertiary Carbinamines. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100926] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
11
|
Sinha MK, Reany O, Yefet M, Botoshansky M, Keinan E. Bistable Cucurbituril Rotaxanes Without Stoppers. Chemistry 2012; 18:5589-605. [DOI: 10.1002/chem.201103434] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Indexed: 11/06/2022]
|
12
|
Weisbach N, Baranová Z, Gauthier S, Reibenspies JH, Gladysz JA. A new type of insulated molecular wire: a rotaxane derived from a metal-capped conjugated tetrayne. Chem Commun (Camb) 2012; 48:7562-4. [DOI: 10.1039/c2cc33321j] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Masson E, Ling X, Joseph R, Kyeremeh-Mensah L, Lu X. Cucurbituril chemistry: a tale of supramolecular success. RSC Adv 2012. [DOI: 10.1039/c1ra00768h] [Citation(s) in RCA: 768] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
14
|
Hembree WI, Baudry J. Three-dimensional mapping of microenvironmental control of methyl rotational barriers. J Phys Chem B 2011; 115:8575-80. [PMID: 21634366 DOI: 10.1021/jp201887v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sterical (van der Waals-induced) rotational barriers of methyl groups are investigated theoretically, using ab initio and empirical force field calculations, for various three-dimensional microenvironmental conditions around the methyl group rotator of a model neopentane molecule. The destabilization (reducing methyl rotational barriers) or stabilization (increasing methyl rotational barriers) of the staggered conformation of the methyl rotator depends on a combination of microenvironmental contributions from (i) the number of atoms around the rotator, (ii) the distance between the rotator and the microenvironmental atoms, and (iii) the dihedral angle between the stator, rotator, and molecular environment around the rotator. These geometrical criteria combine their respective effects in a linearly additive fashion, with no apparent cooperative effects, and their combination in space around a rotator may increase, decrease, or leave the rotator's rotational barrier unmodified. This is exemplified in a geometrical analysis of the alanine dipeptide crystal where microenvironmental effects on methyl rotators' barrier of rotation fit the geometrical mapping described in the neopentane model.
Collapse
Affiliation(s)
- William I Hembree
- UT/ORNL Center for Molecular Biophysics, Oak Ridge, Tennessee 37831, United States
| | | |
Collapse
|
15
|
|
16
|
Yu JS, Wu FG, Tao LF, Luo JJ, Yu ZW. Mechanism of the fast exchange between bound and free guests in cucurbit[7]uril–guest systems. Phys Chem Chem Phys 2011; 13:3638-41. [DOI: 10.1039/c0cp02349c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
17
|
Sinha M, Reany O, Parvari G, Karmakar A, Keinan E. Switchable Cucurbituril-Bipyridine Beacons. Chemistry 2010; 16:9056-67. [DOI: 10.1002/chem.200903067] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
18
|
|
19
|
Wyman IW, Macartney DH. Cucurbit[7]uril host-guest and pseudorotaxane complexes with α,ω-bis(pyridinium)alkane dications. Org Biomol Chem 2009; 7:4045-51. [DOI: 10.1039/b910322h] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
20
|
Li C, Li J, Jia X. Selective binding and highly sensitive fluorescent sensor of palmatine and dehydrocorydaline alkaloids by cucurbit[7]uril. Org Biomol Chem 2009; 7:2699-703. [DOI: 10.1039/b820852b] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Wang R, Bardelang D, Waite M, Udachin KA, Leek DM, Yu K, Ratcliffe CI, Ripmeester JA. Inclusion complexes of coumarin in cucurbiturils. Org Biomol Chem 2009; 7:2435-9. [DOI: 10.1039/b903057c] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|