1
|
Mattei CA, Montigaud V, Dorcet V, Riobé F, Argouarch G, Maury O, Le Guennic B, Cador O, Lalli C, Pointillart F. Luminescent dysprosium single-molecule magnets made from designed chiral BINOL-derived bisphosphate ligands. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01193b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature of the aromatic system and the number of chiral centers of the BINOL derived bisphosphate ligands influence both the chiroptical properties and single-molecule magnet behavior of a series of dysprosium-based chains.
Collapse
|
2
|
Mattei CA, Montigaud V, Gendron F, Denis-Quanquin S, Dorcet V, Giraud N, Riobé F, Argouarch G, Maury O, Le Guennic B, Cador O, Lalli C, Pointillart F. Solid-state versus solution investigation of a luminescent chiral BINOL-derived bisphosphate single-molecule magnet. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01192d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantiopure coordination polymer [Dy(hfac)3((S/R)-L)]n ([(S/R)-1]n) involving a BINOL-derived bisphosphate ligand (S/R)-L is investigated both in solution and solid-state.
Collapse
|
3
|
Hu XH, Fu L, Hou J, Zhang YN, Zhang Z, Wang HF. N-H Chirality in Folded Peptide LK 7β Is Governed by the C α-H Chirality. J Phys Chem Lett 2020; 11:1282-1290. [PMID: 31977221 DOI: 10.1021/acs.jpclett.9b03470] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Recent chiral sum-frequency generation vibrational spectroscopy (SFG-VS) measurements revealed that two N-H stretching modes in the 3100-3500 cm-1 range in folded peptide LK7β exhibit chiral characteristics. Here, we report the first phase-resolved subwavenumber high-resolution broadband SFG-VS (HR-BB-SFG-VS) measurement of the folded peptide LK7β. The results show that this chiral N-H band consists of four, instead of two, distinctive peaks, and they are with two groups of opposite spectral phases. Moreover, the phases of these N-H peaks completely flip from the l-LK7β to the d-LK7β peptide, suggesting that the chirality of the N-H in the folded peptide LK7β is completely governed by the chirality of the Cα-H of the amino acids. This discovery provides a clue on why proteins in nature are composed of the α-amino acids rather than β- or γ-amino acids and may help us understand how life works.
Collapse
Affiliation(s)
- Xiao-Hua Hu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China
| | - Li Fu
- William R. Wiley Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
| | - Jian Hou
- Beijing National Laboratory for Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yue-Ning Zhang
- Beijing National Laboratory for Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Zhen Zhang
- Beijing National Laboratory for Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Hong-Fei Wang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China
- School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , China
| |
Collapse
|
4
|
Pitrat D, Daugey N, Jean M, Vanthuyne N, Wien F, Ducasse L, Calin N, Buffeteau T, Brotin T. Unusual Chiroptical Properties of the Cryptophane-222 Skeleton. J Phys Chem B 2016; 120:12650-12659. [DOI: 10.1021/acs.jpcb.6b09771] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Delphine Pitrat
- Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, Lyon 1 University, 69364 Lyon, France
| | - Nicolas Daugey
- Institut des Sciences Moléculaires, CNRS UMR 5255, Bordeaux University, 33405 Talence, France
| | - Marion Jean
- Centrale Marseille, CNRS, iSm2, Aix-Marseille University, 13397 Marseille, France
| | - Nicolas Vanthuyne
- Centrale Marseille, CNRS, iSm2, Aix-Marseille University, 13397 Marseille, France
| | - Frank Wien
- Synchrotron SOLEIL, L’Orme
des Merisiers, 91192 Gif sur Yvette, France
| | - Laurent Ducasse
- Institut des Sciences Moléculaires, CNRS UMR 5255, Bordeaux University, 33405 Talence, France
| | - Nathalie Calin
- Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, Lyon 1 University, 69364 Lyon, France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, CNRS UMR 5255, Bordeaux University, 33405 Talence, France
| | - Thierry Brotin
- Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Laboratoire de Chimie, Lyon 1 University, 69364 Lyon, France
| |
Collapse
|
5
|
Bannwarth C, Grimme S. Electronic Circular Dichroism of Highly Conjugated π-Systems: Breakdown of the Tamm–Dancoff/Configuration Interaction Singles Approximation. J Phys Chem A 2015; 119:3653-62. [DOI: 10.1021/acs.jpca.5b01680] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph Bannwarth
- Mulliken
Center for Theoretical
Chemistry, Institut für Physikalische und Theoretische Chemie der Universität Bonn, Beringstr. 4, D-53115 Bonn, Germany
| | - Stefan Grimme
- Mulliken
Center for Theoretical
Chemistry, Institut für Physikalische und Theoretische Chemie der Universität Bonn, Beringstr. 4, D-53115 Bonn, Germany
| |
Collapse
|
6
|
Nagy PR, Surján PR, Szabados Á. Vibrational optical activity of chiral carbon nanoclusters treated by a generalized π-electron method. J Chem Phys 2014; 140:044112. [DOI: 10.1063/1.4862682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
7
|
Scafato P, Caprioli F, Pisani L, Padula D, Santoro F, Mazzeo G, Abbate S, Lebon F, Longhi G. Combined use of three forms of chiroptical spectroscopies in the study of the absolute configuration and conformational properties of 3-phenylcyclopentanone, 3-phenylcyclohexanone, and 3-phenylcycloheptanone. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
8
|
Yang G, Si Y, Su Z. Theoretical Study on the Chiroptical Optical Properties of Chiral Fullerene C60 Derivative. J Phys Chem A 2011; 115:13356-63. [DOI: 10.1021/jp204860x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Guochun Yang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, China
| | - Yanling Si
- College of Resource and Environmental Science Jilin Agricultural University, Changchun, 130118 Jilin, China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, China
| |
Collapse
|
9
|
Ding S, Kolbanovskiy A, Durandin A, Crean C, Shafirovich V, Broyde S, Geacintov NE. Absolute configurations of DNA lesions determined by comparisons of experimental ECD and ORD spectra with DFT calculations. Chirality 2010; 21 Suppl 1:E231-41. [PMID: 19937959 DOI: 10.1002/chir.20804] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The usefulness of modern density functional theory (DFT) methods is considered for establishing the absolute configurations of DNA lesions by comparisons of computed and experimentally measured optical rotatory dispersion (ORD) and electronic circular dichroism (ECD) spectra. Two rigid, structurally different DNA lesions (two spiroiminodihydantoin stereoisomers and four equine estrogen 4-hydoxyequilenin-DNA stereoisomeric adducts) have been investigated. In all cases, the signs and shapes of the computed ORD spectra reproduced the experimentally measured ORD spectra, although the magnitudes of the computed and experimental ORD values do not coincide exactly. The computed ECD spectra also reproduced the shapes of the experimental ECD spectra rather well, but are blue-shifted by 10-20 nm. Since the assignments of the absolute configurations of the DNA lesions studied based on computed and experimental ORD and ECD spectra are fully consistent with one another, the computational DFT method shows significant promise for determining the absolute configurations of DNA lesions. Establishing the stereochemistry of DNA lesions is highly useful for understanding their biological impact, especially when sufficient amounts of material are not available for other methods of structural characterization.
Collapse
Affiliation(s)
- Shuang Ding
- Department of Biology, New York University, New York, USA
| | | | | | | | | | | | | |
Collapse
|
10
|
Autschbach J, Nitsch-Velasquez L, Rudolph M. Time-dependent density functional response theory for electronic chiroptical properties of chiral molecules. Top Curr Chem (Cham) 2010; 298:1-98. [PMID: 21321799 DOI: 10.1007/128_2010_72] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Methodology to calculate electronic chiroptical properties from time-dependent density functional theory (TDDFT) is outlined. Applications of TDDFT to computations of electronic circular dichroism, optical rotation, and optical rotatory dispersion are reviewed. Emphasis is put on publications from 2005 to 2010, but much of the older literature is also cited and discussed. The determination of the absolute configuration of chiral molecules by combined measurements and computations is an important application of TDDFT chiroptical methods and discussed in some detail. Raman optical activity (ROA) spectra are obtained from normal-mode derivatives of the optical rotation tensor and other linear response tensors. A few selected (ROA) benchmarks are reviewed.
Collapse
Affiliation(s)
- Jochen Autschbach
- Department of Chemistry, University at Buffalo State University of New York, New York, NY, USA.
| | | | | |
Collapse
|
11
|
|
12
|
Bringmann G, Bruhn T, Maksimenka K, Hemberger Y. The Assignment of Absolute Stereostructures through Quantum Chemical Circular Dichroism Calculations. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801121] [Citation(s) in RCA: 282] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gerhard Bringmann
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: +49‐931‐888‐4755
| | - Torsten Bruhn
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: +49‐931‐888‐4755
| | - Katja Maksimenka
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: +49‐931‐888‐4755
| | - Yasmin Hemberger
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany, Fax: +49‐931‐888‐4755
| |
Collapse
|
13
|
Mazzeo G, Giorgio E, Rosini C, Fabris F, Fregonese E, Toniolo U, De Lucchi O. Synthesis, chiroptical properties, and their theoretical simulation of some highly rotating benzotricamphor derivatives. Chirality 2009; 21 Suppl 1:E86-97. [DOI: 10.1002/chir.20780] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
14
|
Rudolph M, Autschbach J. Fast generation of nonresonant and resonant optical rotatory dispersion curves with the help of circular dichroism calculations and Kramers-Kronig transformations. Chirality 2008; 20:995-1008. [DOI: 10.1002/chir.20547] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
15
|
Tartaglia S, Padula D, Scafato P, Chiummiento L, Rosini C. A Chemical/Computational Approach to the Determination of Absolute Configuration of Flexible and Transparent Molecules: Aliphatic Diols As a Case Study. J Org Chem 2008; 73:4865-73. [DOI: 10.1021/jo800516f] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sabina Tartaglia
- Dipartimento di Chimica, Università degli Studi della Basilicata, Via N. Sauro, 85, 85100 Potenza, Italy
| | - Daniele Padula
- Dipartimento di Chimica, Università degli Studi della Basilicata, Via N. Sauro, 85, 85100 Potenza, Italy
| | - Patrizia Scafato
- Dipartimento di Chimica, Università degli Studi della Basilicata, Via N. Sauro, 85, 85100 Potenza, Italy
| | - Lucia Chiummiento
- Dipartimento di Chimica, Università degli Studi della Basilicata, Via N. Sauro, 85, 85100 Potenza, Italy
| | - Carlo Rosini
- Dipartimento di Chimica, Università degli Studi della Basilicata, Via N. Sauro, 85, 85100 Potenza, Italy
| |
Collapse
|
16
|
|
17
|
Solheim H, Ruud K, Coriani S, Norman P. Complex polarization propagator calculations of magnetic circular dichroism spectra. J Chem Phys 2008; 128:094103. [DOI: 10.1063/1.2834924] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
Yang S, Popov AA, Dunsch L. The Role of an Asymmetric Nitride Cluster on a Fullerene Cage: The Non-IPR Endohedral DySc2N@C76. J Phys Chem B 2007; 111:13659-63. [DOI: 10.1021/jp709650d] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shangfeng Yang
- Group of Electrochemistry and Conducting Polymers, Leibniz-Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany, and Department of Chemistry, Moscow State University, Leninskiye Gory, 119992 Moscow, Russia
| | - Alexey A. Popov
- Group of Electrochemistry and Conducting Polymers, Leibniz-Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany, and Department of Chemistry, Moscow State University, Leninskiye Gory, 119992 Moscow, Russia
| | - Lothar Dunsch
- Group of Electrochemistry and Conducting Polymers, Leibniz-Institute for Solid State and Materials Research Dresden, D-01171 Dresden, Germany, and Department of Chemistry, Moscow State University, Leninskiye Gory, 119992 Moscow, Russia
| |
Collapse
|
19
|
Petrovic AG, Polavarapu PL. Chiroptical Spectroscopic Determination of Molecular Structures of Chiral Sulfinamides: t-Butanesulfinamide. J Phys Chem A 2007; 111:10938-43. [DOI: 10.1021/jp075077p] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana G. Petrovic
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235
| | | |
Collapse
|
20
|
Kim SR, He J, Yanase E, Jang YP, Berova N, Nakanishi K, Sparrow JR. Characterization of dihydro-A2PE: an intermediate in the A2E biosynthetic pathway. Biochemistry 2007; 46:10122-9. [PMID: 17685561 PMCID: PMC2557066 DOI: 10.1021/bi7009635] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bisretinoid lipofuscin pigments that accumulate in retinal pigment epithelial cells are implicated in the etiology of several forms of macular degeneration, including juvenile onset Stargardt disease, Best vitelliform macular degeneration, and age-related macular degeneration. One of these compounds, A2E, is generated by phosphate hydrolysis of a phosphatidyl-pyridinium bisretinoid (A2PE) that forms within photoreceptor outer segments. Here, we demonstrate that the formation of the aromatic pyridinium ring of A2PE follows from the oxidation of a dihydropyridinium intermediate. Time-dependent density functional theory calculation, based on the structure of dihydro-A2E, produced a simulated UV-visible absorbance spectrum characterized by maxima of 494 and 344 nm. Subsequently, a compound exhibiting similar UV-visible absorbance maxima (lambdamax 490 and 330 nm) was identified in the A2E biomimetic reaction mixture. By liquid chromatography-mass spectrometry (LC-MS) this bischromophore had the expected mass of the dihydro-pyridinium bisretinoid. The compound also exhibited the behavior of a biosynthetic intermediate since it formed in advance of the final product A2E and was consumed as A2E accumulated. Moreover, under deoxygenated conditions, conversion to the aromatic pyridinium bisretinoid was inhibited. Taken together, these findings indicate that A2E biosynthesis involves the oxidation of a dihydropyridinium intermediate dihydro-A2PE. An understanding of the biosynthetic pathways of retinal pigment epithelial lipofuscin pigments is critical to the development of therapies for macular degeneration that are based on limiting the formation of these damaging compounds.
Collapse
Affiliation(s)
- So R. Kim
- Department of Ophthalmology, Columbia University, New York, New York 10032
| | - Jiangtao He
- Department of Chemistry, Columbia University, New York, New York 10032
| | - Emiko Yanase
- Department of Ophthalmology, Columbia University, New York, New York 10032
- Department of Chemistry, Columbia University, New York, New York 10032
| | - Young P. Jang
- Department of Ophthalmology, Columbia University, New York, New York 10032
| | - Nina Berova
- Department of Chemistry, Columbia University, New York, New York 10032
| | - Koji Nakanishi
- Department of Chemistry, Columbia University, New York, New York 10032
| | - Janet R. Sparrow
- Department of Ophthalmology, Columbia University, New York, New York 10032
- Department of Pathology and Cell Biology , Columbia University, New York, New York 10032
- To whom correspondence should be addressed. 630 W. 168 Street, New York NY 10021; Phone: (212) 305−9944. Fax: (212) 305−9638. E-mail:
| |
Collapse
|
21
|
Warnke MM, Cotton FA, Armstrong DW. Enantioseparation of extended metal atom chain complexes: unique compounds of extraordinarily high specific rotation. Chirality 2007; 19:179-83. [PMID: 17192837 DOI: 10.1002/chir.20355] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Extended metal atom chains (EMACs) contain a linear metal chain wrapped by various ligands. Most complexes are of the form M(3)(dpa)(4)X(2), where M = metal, dpa = 2,2'-dipyridylamide, and X = various anions. The ligands form helical coils about the metal chain, which results in chiral EMAC complexes. The EMACs containing the metals Co and Cu were partially separated in polar organic mode using a vancomycin-based chiral stationary phase. Under similar conditions, two EMACs with Ni metal and varying anions could be baseline separated. The polar organic mode was used because of the instability of the compounds in aqueous mobile phases. Also, these conditions are more conducive to preparative separations. Polarimetric measurements on the resolved enantiomers of Ni(3)(dpa)(4)Cl(2) indicate that they have extraordinarily high specific rotations (on the order of 5000 deg cc/g dm).
Collapse
Affiliation(s)
- Molly M Warnke
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, USA
| | | | | |
Collapse
|
22
|
Zhu HJ, Ren J, Pittman CU. Matrix model to predict specific optical rotations of acyclic chiral molecules. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.12.061] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
23
|
Armstrong DW, Cotton FA, Petrovic AG, Polavarapu PL, Warnke MM. Resolution of Enantiomers in Solution and Determination of the Chirality of Extended Metal Atom Chains. Inorg Chem 2007; 46:1535-7. [PMID: 17269764 DOI: 10.1021/ic062263l] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The resolution of enantiomers of extended metal atom chains of the type Ni3[(C5H5N)2N]4Cl2 has been accomplished by chromatographic methods in solution, and the chirality was determined using vibrational circular dichroism, electronic circular dichroism, optical rotatory dispersion, and density functional theory calculations.
Collapse
Affiliation(s)
- Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, USA
| | | | | | | | | |
Collapse
|
24
|
Polavarapu PL. Renaissance in chiroptical spectroscopic methods for molecular structure determination. CHEM REC 2007; 7:125-36. [PMID: 17394174 DOI: 10.1002/tcr.20117] [Citation(s) in RCA: 152] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Two of the chiroptical spectroscopic methods, namely optical rotatory dispersion (ORD) and electronic circular dichroism (ECD), have been around for several decades. But their use in determining the absolute configuration and predominant conformation is gaining renewed interest with the availability of quantum mechanical methods for predicting ORD and ECD. Two other methods, namely vibrational circular dichroism (VCD) and vibrational Raman optical activity (VROA), are relatively new and offer convenient approaches for deducing the structural information in chiral molecules. With the availability of quantum mechanical programs for predicting VCD and VROA, these methods have attracted numerous new researchers to this area. This review summarizes the latest developments in these four areas and provides examples where more than one method has been used to confirm the information obtained from individual methods.
Collapse
Affiliation(s)
- Prasad L Polavarapu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA.
| |
Collapse
|
25
|
Thilgen C, Diederich F. Structural Aspects of Fullerene ChemistryA Journey through Fullerene Chirality. Chem Rev 2006; 106:5049-135. [PMID: 17165683 DOI: 10.1021/cr0505371] [Citation(s) in RCA: 379] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlo Thilgen
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland.
| | | |
Collapse
|
26
|
Krykunov M, Kundrat MD, Autschbach J. Calculation of circular dichroism spectra from optical rotatory dispersion, and vice versa, as complementary tools for theoretical studies of optical activity using time-dependent density functional theory. J Chem Phys 2006; 125:194110. [PMID: 17129092 DOI: 10.1063/1.2363372] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A comparison of two theoretical methods based on time-dependent density functional theory for the calculation of the linear dispersive and absorptive properties of chiral molecules has been made. For this purpose, a recently proposed computational method for the calculation of circular dichroism (CD) spectra from the imaginary part of the optical rotation parameter has been applied to six rigid organic molecules. The results have been compared to the CD spectra obtained from the rotatory strengths and from the Kramers-Kronig transformation of optical rotatory dispersion (ORD) curves. We have also investigated a criterion based on the Kramers-Kronig integration formula to determine a number of excitations in truncated CD spectra which may yield a reasonable low frequency resonant ORD. It has been tested by calculating the ORD from the sum-over-states formula both in the nonresonant and resonant regions. Finally, we have applied these methods to model the resonant optical activity of proline at low pH.
Collapse
Affiliation(s)
- Mykhaylo Krykunov
- Department of Chemistry, State University of New York at Buffalo, 312 Natural Sciences Complex, Buffalo, New York 14260-3000, USA.
| | | | | |
Collapse
|
27
|
Abstract
The availability of sophisticated quantum mechanical methods for predicting molecular optical rotations has revolutionized the determination of molecular stereochemistry. However, the objectives and approaches used for the applications of optical rotation vary from one laboratory to the other. With the number of applications of optical rotation increasing at an unprecedented rate, it is considered necessary to discuss the protocols for the general use of optical rotations predicted with quantum mechanical methods. A summary of the quantum mechanical methods for predicting optical rotations and protocols for the use of predicted optical rotations are presented in this article.
Collapse
|