return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CHNH (vinylazine)

using model chemistry: CCSD(T)/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 2A"
1 2 yes CS trans 2A"

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-133.051571
Energy at 298.15K 
HF Energy-132.518340
Nuclear repulsion energy64.802361
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVTZ

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-133.074388
Energy at 298.15K-133.078567
HF Energy-132.517330
Nuclear repulsion energy64.805242
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3397 3295        
2 A' 3247 3150        
3 A' 3142 3047        
4 A' 3127 3033        
5 A' 1504 1459        
6 A' 1455 1411        
7 A' 1380 1339        
8 A' 1230 1193        
9 A' 1132 1098        
10 A' 986 956        
11 A' 495 480        
12 A" 1078 1046        
13 A" 813 789        
14 A" 701 679        
15 A" 495 481        

Unscaled Zero Point Vibrational Energy (zpe) 12091.4 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 11727.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVTZ
ABC
1.94538 0.36899 0.31016

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.455 0.000
C2 1.130 -0.382 0.000
N3 -1.257 0.061 0.000
H4 0.162 1.532 0.000
H5 2.131 0.029 0.000
H6 1.013 -1.460 0.000
H7 -1.282 -0.965 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.40531.31731.08922.17312.16601.9126
C21.40532.42742.14401.08231.08502.4813
N31.31732.42742.04363.38842.73241.0258
H41.08922.14402.04362.47723.11052.8837
H52.17311.08233.38842.47721.86233.5550
H62.16601.08502.73243.11051.86232.3479
H71.91262.48131.02582.88373.55502.3479

picture of vinylazine state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.211 C1 C2 H6 120.323
C1 N3 H7 108.787 C2 C1 N3 126.109
C2 C1 H4 117.968 N3 C1 H4 115.922
H5 C2 H6 118.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability