1
|
Figgen D, Schwerdtfeger P. Structures, inversion barriers, and parity violation effects in chiral SeOXY molecules (X,Y=H, F, Cl, Br, or I). J Chem Phys 2009; 130:054306. [DOI: 10.1063/1.3072370] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
2
|
Chaignaud M, Gillaizeau I, Ouhamou N, Coudert G. New highlights in the synthesis and reactivity of 1,4-dihydropyrazine derivatives. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.080] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
A HeI photoelectron spectroscopy and theoretical study of 2,6-dichloropyrazine, 2,3-dichloropyrazine, 4,6-dichloropyrimidine and 3,6-dichloropyridazine. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
4
|
Ravindran G, Muthusubramanian S, Selvaraj S, Perumal S. A Simple and Efficient One-Step Synthesis of 2,4,10a-Triaryl-1,10a-Dihydro-2H-Pyrazino[2,1-b][1,3] Benzothiazoles Catalyzed by p-Toluene Sulfonic Acid. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500601013190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- G. Ravindran
- a Department of Organic Chemistry, School of Chemistry , Madurai Kamaraj University , Madurai , India
| | - S. Muthusubramanian
- a Department of Organic Chemistry, School of Chemistry , Madurai Kamaraj University , Madurai , India
| | - S. Selvaraj
- a Department of Organic Chemistry, School of Chemistry , Madurai Kamaraj University , Madurai , India
| | - S. Perumal
- a Department of Organic Chemistry, School of Chemistry , Madurai Kamaraj University , Madurai , India
| |
Collapse
|
5
|
Balcells D, Carbó JJ, Maseras F, Eisenstein O. Self-Consistency versus “Best-Fit” Approaches in Understanding the Structure of Metal Nitrosyl Complexes. Organometallics 2004. [DOI: 10.1021/om049536+] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
|
7
|
Navarro A, Vázquez J, Montejo M, López González J, Kearley G. A reinvestigation of the ν7 and ν10 modes of pyridazine on the basis of the inelastic neutron scattering spectrum analysis. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00984-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Figgen D, Metz B, Stoll H, Rauhut G. Transferable Scaling Factors for Vibrational Force Fields of Halogenated Molecules Based on Energy-Consistent Pseudopotentials. J Phys Chem A 2002. [DOI: 10.1021/jp014557s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Detlev Figgen
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Bernhard Metz
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Hermann Stoll
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Guntram Rauhut
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| |
Collapse
|
9
|
Zhou P, Li G, Shao Z, Pan X, Yu T. Structure of Bombyx mori Silk Fibroin Based on the DFT Chemical Shift Calculation. J Phys Chem B 2001. [DOI: 10.1021/jp0125395] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ping Zhou
- Contribution from The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P. R. China
| | - Guiyang Li
- Contribution from The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P. R. China
| | - Zhengzhong Shao
- Contribution from The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P. R. China
| | - Xiaoyun Pan
- Contribution from The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P. R. China
| | - Tongyin Yu
- Contribution from The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Macromolecular Science Department, Fudan University, Shanghai 200433, P. R. China
| |
Collapse
|
10
|
Vázquez J, López González JJ, Márquez F, Martínez Torres E, Boggs JE. Transferability and Physicochemical Interpretation of Canonical Force Fields in Redundant Internal Coordinates: Pyridazine and 3,6-Dichloropyridazine. J Phys Chem A 2001. [DOI: 10.1021/jp010456i] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Vázquez
- Department of Physical and Analytical Chemistry, University of Jaén, Campus Las Lagunillas s/n, Jaén E-23071, Spain
| | - Juan J. López González
- Department of Physical and Analytical Chemistry, University of Jaén, Campus Las Lagunillas s/n, Jaén E-23071, Spain
| | - Fernando Márquez
- Department of Physical and Analytical Chemistry, University of Jaén, Campus Las Lagunillas s/n, Jaén E-23071, Spain
| | - Emilio Martínez Torres
- Department of Physical Chemistry, University of Castilla-La Mancha, Ciudad Real E-13071, Spain
| | - James E. Boggs
- Institute for Theoretical Chemistry, Department of Chemistry and Biochemistry, University of Texas, Austin, Texas 78712-1167
| |
Collapse
|
11
|
Vázquez J, Demaison J, López-González JJ, Boggs JE, Rudolph HD. Experimental and ab Initio Equilibrium Structure and Harmonic Force Field of 1,2,5-Oxadiazole. JOURNAL OF MOLECULAR SPECTROSCOPY 2001; 207:224-237. [PMID: 11397111 DOI: 10.1006/jmsp.2001.8335] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The equilibrium structure of 1,2,5-oxadiazole has been calculated ab initio at the CCSD(T) level using a polarized valence quadruple zeta basis set. The harmonic force field has also been calculated at the MP2/cc-pVTZ, B3LYP/6-311++G(3df, 2pd), and B3LYP/cc-pVQZ levels. These force fields have been subsequently scaled and further refined by fitting them to the experimental values of the vibrational fundamentals of three isotopomers and the centrifugal distortion constants of the parent molecule. The specific refinement of those scaled force constants particularly sensitive to the experimental data set was decisive for obtaining a more reliable harmonic potential. The resulting force fields are presented and used, together with the ground state rotational constants, to calculate an r(z) structure. The experimental r(0), r(s), and r(m) structures have also been determined. The different results have been compared and it is concluded that the ab initio structure is a good approximation of the equilibrium structure. It is also shown that the magnetic correction is not negligible, particularly for the inertial defect. Another interesting conclusion is that the anharmonicity of the C-H stretching might be unusually small. Copyright 2001 Academic Press.
Collapse
Affiliation(s)
- J. Vázquez
- Department of Analytical and Physical Chemistry, University of Jaén, Jaén, 23071, Spain
| | | | | | | | | |
Collapse
|
12
|
Rauhut G. Recent Advances in Computing Heteroatom-Rich Five- and Six-Membered Ring Systems. ADVANCES IN HETEROCYCLIC CHEMISTRY 2001. [DOI: 10.1016/s0065-2725(01)81010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
|