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 HCNH (methyleneazane)

using model chemistry: PBE1PBE/6-31+G**

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 PBE1PBE/6-31+G**
 hartrees
Energy at 0K-93.852393
Energy at 298.15K-93.853679
HF Energy-93.852393
Nuclear repulsion energy28.183145
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 PBE1PBE/6-31+G**
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' 3385 3234 1.73      
2 A' 3024 2889 47.53      
3 A' 1880 1796 42.91      
4 A' 1018 972 113.74      
5 A' 844 807 144.89      
6 A" 911 870 5.60      

Unscaled Zero Point Vibrational Energy (zpe) 5531.0 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 5283.8 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 PBE1PBE/6-31+G**
ABC
13.05591 1.29796 1.18059

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.638 0.000
N2 0.111 -0.588 0.000
H3 -0.675 1.408 0.000
H4 -0.764 -1.123 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22561.09991.9667
N21.22562.14451.0258
H31.09992.14452.5330
H41.96671.02582.5330

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.494 H3 C1 N2 134.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.101      
2 N -0.349      
3 H 0.159      
4 H 0.290      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.451 0.455 0.000 2.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.420 0.746 0.000
y 0.746 -11.315 0.000
z 0.000 0.000 -12.904
Traceless
 xyz
x -0.311 0.746 0.000
y 0.746 1.348 0.000
z 0.000 0.000 -1.036
Polar
3z2-r2-2.073
x2-y2-1.106
xy0.746
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.393 0.078 0.000
y 0.078 4.388 0.000
z 0.000 0.000 1.737


<r2> (average value of r2) Å2
<r2> 16.930
(<r2>)1/2 4.115

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-93.860930
Energy at 298.15K-93.862269
HF Energy-93.860930
Nuclear repulsion energy28.132292
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 PBE1PBE/6-31+G**
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' 3508 3351 13.26      
2 A' 3082 2945 19.41      
3 A' 1835 1753 39.43      
4 A' 1193 1139 12.30      
5 A' 899 858 233.52      
6 A" 982 938 131.92      

Unscaled Zero Point Vibrational Energy (zpe) 5749.2 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 5492.2 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 PBE1PBE/6-31+G**
ABC
13.73598 1.29105 1.18013

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.649 0.000
N2 -0.000 -0.586 0.000
H3 0.898 1.279 0.000
H4 -0.896 -1.073 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23441.09741.9415
N21.23442.06971.0205
H31.09742.06972.9589
H41.94151.02052.9589

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.558 H3 C1 N2 125.045
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 N -0.373      
3 H 0.166      
4 H 0.305      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.537 0.238 0.000 0.587
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.508 3.506 0.000
y 3.506 -11.736 0.000
z 0.000 0.000 -12.984
Traceless
 xyz
x 0.852 3.506 0.000
y 3.506 0.510 0.000
z 0.000 0.000 -1.363
Polar
3z2-r2-2.725
x2-y20.228
xy3.506
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.575 0.122 0.000
y 0.122 4.294 0.000
z 0.000 0.000 1.870


<r2> (average value of r2) Å2
<r2> 16.867
(<r2>)1/2 4.107