scholarly journals Solid State Structure and Absolute Configuration of Filifolinol Acetate

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600
Author(s):  
Marcelo A. Muñoz ◽  
Alejandro Urzúa ◽  
Javier Echeverría ◽  
Brenda Modak ◽  
Pedro Joseph-Nathan
Keyword(s):  
Density Functional Theory ◽  
Solid State ◽  
Absolute Configuration ◽  
Spectroscopic Data ◽  
Density Functional ◽  
Vibrational Circular Dichroism ◽  
State Structure ◽  
Functional Theory ◽  
X Ray ◽  
C Nmr

Careful reevaluation of the 1H and 13C NMR spectroscopic data of filifolinol acetate (4) led to the reassignment of the C-10 and C-11 signals, as well as the gem-dimethyl signals. Single crystal X-ray analysis provided an independent structural confirmation of 4, and comparison of the experimental vibrational circular dichroism spectrum with calculations performed using density functional theory provided the absolute configuration of this 3H-spiro-1-benzofuran-2,1′-cyclohexane and related molecules.

scholarly journals Vibrational Circular Dichroism Absolute Configuration of 9,12-Cyclomulin-13-ol, a Diterpene from Azorella and Laretia Species

2015 ◽  
Vol 10 (8) ◽  
pp. 1934578X1501000
Author(s):  
Marcelo A. Muñoz ◽  
Aurelio San-Martín ◽  
Pedro Joseph-Nathan
Keyword(s):  
Density Functional Theory ◽  
Circular Dichroism ◽  
Absolute Configuration ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Vibrational Circular Dichroism ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray ◽  
Circular Dichroïsm

The absolute configuration of the diterpenoid 9,12-cyclomulin-13-ol (1), a constituent of Azorella and Laretia species, has been established by vibrational circular dichroism spectroscopy in combination with density functional theory calculations. The obtained normal diterpene absolute configuration confirms that of azorellanol (2), which was determined by single crystal X-ray diffraction.

scholarly journals Polymorphs of Rb3ScF6: X-ray and Neutron Diffraction, Solid-State NMR, and Density Functional Theory Calculations Study

2021 ◽  
Vol 60 (8) ◽  
pp. 6016-6026
Author(s):  
Aydar Rakhmatullin ◽  
Maxim S. Molokeev ◽  
Graham King ◽  
Ilya B. Polovov ◽  
Konstantin V. Maksimtsev ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Solid State ◽  
Neutron Diffraction ◽  
Solid State Nmr ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
X Ray

scholarly journals A multinuclear solid state NMR, density functional theory and X-Ray diffraction study of hydrogen bonding in Group I hydrogen dibenzoates

CrystEngComm ◽  
2013 ◽  
Vol 15 (43) ◽  
pp. 8823 ◽  
Author(s):  
Gregory J. Rees ◽  
Stephen P. Day ◽  
Alberth Lari ◽  
Andrew P. Howes ◽  
Dinu Iuga ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Diffraction Study ◽  
Solid State Nmr ◽  
Density Functional ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray ◽  
Group I

scholarly journals Substituent Effects in 3,3’ Bipyrazole Derivatives. X-ray Crystal Structures, Molecular Properties and DFT Analysis

2021 ◽  
Vol 68 (3) ◽  
pp. 718-727
Author(s):  
Ibrahim Bouabdallah ◽  
Tarik Harit ◽  
Mahmoud Rahal ◽  
Fouad Malek ◽  
Monique Tillard ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Density Functional Theory ◽  
Solid State ◽  
Dft Calculations ◽  
Single Crystal ◽  
Crystal Structures ◽  
Density Functional ◽  
Substituent Effects ◽  
Functional Theory ◽  
X Ray

The single crystal X-ray structure of new 1,1’-bis(2-nitrophenyl)-5,5’-diisopropyl-3,3’-bipyrazole, 1, is triclinic P I–, a = 7.7113(8), b = 12.3926(14), c = 12.9886(12) Å, α = 92.008(8), β = 102.251(8), γ = 99.655(9)°. The structural arrangement is compared to that of 5,5’-diisopropyl-3,3’-bipyrazole, 5, whose single crystal structure is found tetragonal I41/a, a = b = 11.684(1), c = 19.158(1) Å. The comparison is also extended to the structures previously determined for 1,1’-bis(2-nitrophenyl)-5,5’-propyl-3,3’-bipyrazole, 2, 1,1’-bis(4-nitrophenyl)-5,5’-diisopropyl-3,3’-bipyrazole, 3, and 1,1’-bis(benzyl)-5,5’-diisopropyl-3,3’-bipyrazole, 4. Density Functional Theory (DFT) calculations are used to investigate the molecular geometries and to determine the global reactivity parameters. The geometry of isolated molecules and the molecular arrangements in the solid state are analyzed according to the nature of the groups connected to the bipyrazole core.

Examination of Phencyclidine Hydrochloride via Cryogenic Terahertz Spectroscopy, Solid-State Density Functional Theory, and X-ray Diffraction

2009 ◽  
Vol 113 (46) ◽  
pp. 13013-13022 ◽  
Author(s):  
Patrick M. Hakey ◽  
Matthew R. Hudson ◽  
Damian G. Allis ◽  
Wayne Ouellette ◽  
Timothy M. Korter
Keyword(s):  
Density Functional Theory ◽  
Solid State ◽  
Density Functional ◽  
Terahertz Spectroscopy ◽  
State Density ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray
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