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: PBEPBEultrafine/cc-pVDZ

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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-93.848609
Energy at 298.15K-93.849873
HF Energy-93.848609
Nuclear repulsion energy27.877653
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 PBEPBEultrafine/cc-pVDZ
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' 3131 3113 17.43      
2 A' 2867 2850 67.50      
3 A' 1819 1809 17.38      
4 A' 951 945 149.99      
5 A' 850 846 84.51      
6 A" 859 854 2.92      

Unscaled Zero Point Vibrational Energy (zpe) 5238.3 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 5207.9 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 PBEPBEultrafine/cc-pVDZ
ABC
12.45949 1.27634 1.15774

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.113 0.642 0.000
N2 0.113 -0.593 0.000
H3 -0.685 1.427 0.000
H4 -0.787 -1.126 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23551.12001.9843
N21.23552.17271.0460
H31.12002.17272.5556
H41.98431.04602.5556

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.632 H3 C1 N2 134.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 N -0.100      
3 H 0.061      
4 H 0.104      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.020 0.173 0.000 2.027
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.028 0.496 0.000
y 0.496 -11.087 0.000
z 0.000 0.000 -12.417
Traceless
 xyz
x -0.277 0.496 0.000
y 0.496 1.136 0.000
z 0.000 0.000 -0.859
Polar
3z2-r2-1.719
x2-y2-0.942
xy0.496
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.193 0.081 0.000
y 0.081 4.033 0.000
z 0.000 0.000 1.350


<r2> (average value of r2) Å2
<r2> 16.897
(<r2>)1/2 4.111

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-93.855966
Energy at 298.15K-93.857292
HF Energy-93.855966
Nuclear repulsion energy27.788350
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 PBEPBEultrafine/cc-pVDZ
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' 3287 3268 1.99      
2 A' 2916 2899 36.53      
3 A' 1758 1748 16.90      
4 A' 1167 1160 8.46      
5 A' 884 879 192.09      
6 A" 944 938 99.04      

Unscaled Zero Point Vibrational Energy (zpe) 5477.3 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 5445.5 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 PBEPBEultrafine/cc-pVDZ
ABC
12.66925 1.27183 1.15580

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.657 0.000
N2 -0.001 -0.592 0.000
H3 0.937 1.266 0.000
H4 -0.925 -1.066 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24841.11871.9549
N21.24842.08141.0387
H31.11872.08142.9846
H41.95491.03872.9846

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 117.169 H3 C1 N2 123.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.102      
2 N -0.099      
3 H 0.076      
4 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.412 -0.074 0.000 0.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.120 2.894 0.000
y 2.894 -11.476 0.000
z 0.000 0.000 -12.447
Traceless
 xyz
x 0.842 2.894 0.000
y 2.894 0.307 0.000
z 0.000 0.000 -1.149
Polar
3z2-r2-2.297
x2-y20.356
xy2.894
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.408 0.599 0.000
y 0.599 3.708 0.000
z 0.000 0.000 1.398


<r2> (average value of r2) Å2
<r2> 16.808
(<r2>)1/2 4.100