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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: G4

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 G4
 hartrees
Energy at 0K-93.914720
Energy at 298.15K-93.910780
HF Energy-93.966198
Nuclear repulsion energy28.217715
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 B3LYP/6-31G(2df,p)
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' 3306 3191 3.78      
2 A' 2969 2865 48.74      
3 A' 1868 1802 23.79      
4 A' 1003 968 129.22      
5 A' 857 827 127.27      
6 A" 899 867 5.15      

Unscaled Zero Point Vibrational Energy (zpe) 5450.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5259.9 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 B3LYP/6-31G(2df,p)
ABC
13.06887 1.30165 1.18375

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.111 0.637 0.000
N2 0.111 -0.586 0.000
H3 -0.678 1.405 0.000
H4 -0.760 -1.130 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22291.10051.9705
N21.22292.14101.0273
H31.10052.14102.5364
H41.97051.02732.5364

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.845 H3 C1 N2 133.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.135      
2 N -0.267      
3 H 0.148      
4 H 0.254      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.003 0.299 0.000 2.025
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 16.584
(<r2>)1/2 4.072

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at G4
 hartrees
Energy at 0K-93.921317
Energy at 298.15K-93.922706
HF Energy-93.973762
Nuclear repulsion energy28.134343
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 B3LYP/6-31G(2df,p)
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' 3430 3310 3.99      
2 A' 3015 2909 29.82      
3 A' 1808 1745 24.14      
4 A' 1202 1160 8.10      
5 A' 908 876 215.27      
6 A" 976 942 95.70      

Unscaled Zero Point Vibrational Energy (zpe) 5669.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5470.8 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 B3LYP/6-31G(2df,p)
ABC
13.57288 1.29389 1.18128

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.649 0.000
N2 -0.001 -0.584 0.000
H3 0.907 1.270 0.000
H4 -0.898 -1.074 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.23381.09961.9430
N21.23382.06441.0219
H31.09962.06442.9582
H41.94301.02192.9582

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.528 H3 C1 N2 124.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 N -0.259      
3 H 0.155      
4 H 0.265      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.466 0.103 0.000 0.477
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 16.544
(<r2>)1/2 4.067