|
1
|
Lu N, Elakkat V, Thrasher JS, Wang X, Tessema E, Chan KL, Wei RJ, Trabelsi T, Francisco JS. Neutron Diffraction Study of Significant sp3 and sp2 C-H Bond Shortening in a Fluorinated Pyridinium Saccharinate. J Am Chem Soc 2021; 143:5550-5557. [PMID: 33784456 DOI: 10.1021/jacs.1c02570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have experimentally shown by neutron diffraction significant shortening of both sp3- and sp2-hybridized C-H bonds to 1.092(2) and 1.081(1) Å in a hydrogen-bonded crystal of a difluorinated compound, 4-((2,2-difluoroethoxy)methyl)pyridinium saccharinate. Both MP2 and DFT calculations affirmed the C-H bond shrinkages. Sanderson's electronegativity equalization principle provides insight into the shortening of the C-H covalent bond lengths for both sp3- and sp2-hybridized carbon atoms. To the best of our knowledge, this neutron diffraction study has revealed the largest extents of sp3 and sp2 C-H bond shrinkages with a 3-sigma rule being satisfied.
Collapse
Affiliation(s)
- Norman Lu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan, ROC.,Development Center for Smart Textile, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Vijayanath Elakkat
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Joseph S Thrasher
- Department of Chemistry, Advanced Materials Research Laboratory, Clemson University, Anderson, South Carolina 29625, United States
| | - Xiaoping Wang
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Eskedar Tessema
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Ka Long Chan
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Rong-Jun Wei
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Tarek Trabelsi
- Department of Earth and Environmental Science and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6316, United States
| | - Joseph S Francisco
- Department of Earth and Environmental Science and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6316, United States
| |
Collapse
|
|
2
|
Wei F, Zhu H, Li Z, Wang H, Zhu Y, Zhang L, Yao Z, Luo Z, Zhang C, Guo K. Food Sweetener Saccharin in Binary Organocatalyst for Bulk Ring‐Opening Polymerization of Lactide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801319] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fulan Wei
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Hui Zhu
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zhenjiang Li
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Haixin Wang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Yuejia Zhu
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Lei Zhang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zhiwei Yao
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zikun Luo
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Chan Zhang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Kai Guo
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| |
Collapse
|
|
3
|
Chen H, Jia HX. Crystal structure of 2-(4-(2-(4-(2-fluorophenyl)piperazin-1-yl)ethyl)benzyl)benzo[ d]isothiazol-3(2H)-one 1,1-dioxide, C 26H 26FN 3O 3S – a saccharin dervative. Z KRIST-NEW CRYST ST 2018. [DOI: 10.1515/ncrs-2017-0197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C26H26F1N3O3S1, triclinic, P1̅ (no. 2), a = 7.0252(14) Å, b = 9.3017(19) Å, c = 19.388(4) Å, α = 97.80(3)°, β = 97.77(3)°, γ = 106.84(3)°, V = 1180.9(5) Å3, Z = 2, R
gt(F) = 0.0729, wR
ref(F
2) = 0.1854, T = 296.15 K.
Collapse
Affiliation(s)
- Hong Chen
- College of Food and Drug , Luoyang Normal University , Luoyang , Henan 471934, P.R. China
| | - Hui-Xia Jia
- College of Food and Drug , Luoyang Normal University , Luoyang , Henan 471934, P.R. China
| |
Collapse
|