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: HF/CEP-31G

19 10 17 12 22

States and conformations

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

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-22.877600
Energy at 298.15K-22.881837
HF Energy-22.877600
Nuclear repulsion energy35.421640
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 HF/CEP-31G
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' 3688 3325 5.90      
2 A' 3455 3114 35.92      
3 A' 3344 3014 21.58      
4 A' 3309 2983 58.33      
5 A' 1633 1472 10.34      
6 A' 1550 1397 9.91      
7 A' 1386 1249 34.03      
8 A' 1272 1146 1.25      
9 A' 1181 1064 41.81      
10 A' 1039 937 2.97      
11 A' 498 449 15.17      
12 A" 1037 935 3.39      
13 A" 831 749 44.41      
14 A" 712 641 166.90      
15 A" 561 506 19.02      

Unscaled Zero Point Vibrational Energy (zpe) 12747.6 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 11490.7 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 HF/CEP-31G
ABC
2.02956 0.35139 0.29953

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.435 0.000
C2 1.188 -0.345 0.000
N3 -1.215 -0.177 0.000
H4 0.082 1.517 0.000
H5 2.162 0.123 0.000
H6 1.120 -1.422 0.000
H7 -1.988 0.482 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.42161.36071.08512.18422.16901.9883
C21.42162.40952.16611.08011.07953.2819
N31.36072.40952.13373.39032.64641.0153
H41.08512.16612.13372.50393.11742.3141
H52.18421.08013.39032.50391.86394.1649
H62.16901.07952.64643.11741.86393.6446
H71.98833.28191.01532.31414.16493.6446

picture of vinylazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.032 C1 C2 H6 119.646
C1 N3 H7 112.804 C2 C1 N3 119.979
C2 C1 H4 118.958 N3 C1 H4 121.062
H5 C2 H6 119.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.219      
2 C -0.282      
3 N -0.229      
4 H 0.176      
5 H 0.150      
6 H 0.176      
7 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.853 2.177 0.000 2.338
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.681 -3.330 0.000
y -3.330 -18.202 0.000
z 0.000 0.000 -20.563
Traceless
 xyz
x 2.701 -3.330 0.000
y -3.330 0.421 0.000
z 0.000 0.000 -3.122
Polar
3z2-r2-6.244
x2-y21.520
xy-3.330
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.447 -0.448 0.000
y -0.448 3.476 0.000
z 0.000 0.000 2.011


<r2> (average value of r2) Å2
<r2> 40.424
(<r2>)1/2 6.358

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-22.876120
Energy at 298.15K-22.880346
HF Energy-22.876120
Nuclear repulsion energy35.457167
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 HF/CEP-31G
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' 3654 3293 10.31      
2 A' 3440 3101 50.79      
3 A' 3385 3051 13.88      
4 A' 3327 2999 19.73      
5 A' 1617 1457 6.83      
6 A' 1533 1381 4.12      
7 A' 1392 1255 41.96      
8 A' 1277 1151 0.20      
9 A' 1183 1066 51.61      
10 A' 1024 923 2.20      
11 A' 500 451 13.84      
12 A" 1058 954 80.34      
13 A" 829 747 102.51      
14 A" 705 635 22.72      
15 A" 547 493 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 12734.2 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 11478.6 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 HF/CEP-31G
ABC
1.88755 0.35368 0.29787

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.468 0.000
C2 1.164 -0.354 0.000
N3 -1.286 0.017 0.000
H4 0.112 1.541 0.000
H5 2.150 0.088 0.000
H6 1.092 -1.434 0.000
H7 -1.340 -0.999 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6 H7
C11.42541.36251.07892.18282.19311.9873
C21.42542.47762.16781.08021.08212.5857
N31.36252.47762.06853.43582.78481.0176
H41.07892.16782.06852.50223.13232.9265
H52.18281.08023.43582.50221.85373.6549
H62.19311.08212.78483.13231.85372.4699
H71.98732.58571.01762.92653.65492.4699

picture of vinylazine state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 120.568 C1 C2 H6 121.401
C1 N3 H7 112.411 C2 C1 N3 125.401
C2 C1 H4 119.267 N3 C1 H4 115.332
H5 C2 H6 118.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 C -0.325      
3 N -0.193      
4 H 0.199      
5 H 0.157      
6 H 0.158      
7 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.377 -1.300 0.000 2.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.153 2.793 0.000
y 2.793 -16.077 0.000
z 0.000 0.000 -20.593
Traceless
 xyz
x -3.818 2.793 0.000
y 2.793 5.297 0.000
z 0.000 0.000 -1.479
Polar
3z2-r2-2.957
x2-y2-6.076
xy2.793
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.020 -0.137 0.000
y -0.137 3.748 0.000
z 0.000 0.000 2.049


<r2> (average value of r2) Å2
<r2> 40.369
(<r2>)1/2 6.354