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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: B3PW91/3-21G

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 B3PW91/3-21G
 hartrees
Energy at 0K-93.394860
Energy at 298.15K-93.396161
HF Energy-93.394860
Nuclear repulsion energy28.060765
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 B3PW91/3-21G
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' 3185 3061 5.97      
2 A' 2966 2851 57.39      
3 A' 1865 1792 14.74      
4 A' 971 933 96.08      
5 A' 899 864 211.47      
6 A" 948 911 9.24      

Unscaled Zero Point Vibrational Energy (zpe) 5416.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 5206.4 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 B3PW91/3-21G
ABC
14.27688 1.26920 1.16558

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.106 0.643 0.000
N2 0.106 -0.583 0.000
H3 -0.659 1.433 0.000
H4 -0.717 -1.214 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22641.09982.0318
N21.22642.15661.0373
H31.09982.15662.6480
H42.03181.03732.6480

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 127.477 H3 C1 N2 135.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.044      
2 N -0.554      
3 H 0.207      
4 H 0.303      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.412 0.064 0.000 2.413
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.126 0.675 0.000
y 0.675 -10.658 0.000
z 0.000 0.000 -12.365
Traceless
 xyz
x -0.615 0.675 0.000
y 0.675 1.587 0.000
z 0.000 0.000 -0.972
Polar
3z2-r2-1.944
x2-y2-1.468
xy0.675
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.538 0.087 0.000
y 0.087 3.713 0.000
z 0.000 0.000 0.946


<r2> (average value of r2) Å2
<r2> 16.804
(<r2>)1/2 4.099

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-93.401935
Energy at 298.15K-93.403289
HF Energy-93.401935
Nuclear repulsion energy27.948552
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 B3PW91/3-21G
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' 3344 3214 1.08      
2 A' 3029 2912 31.61      
3 A' 1780 1711 12.16      
4 A' 1204 1158 18.91      
5 A' 939 903 241.46      
6 A" 1009 969 134.67      

Unscaled Zero Point Vibrational Energy (zpe) 5652.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 5433.2 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 B3PW91/3-21G
ABC
14.05776 1.26807 1.16315

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 0.656 0.000
N2 -0.002 -0.585 0.000
H3 0.900 1.282 0.000
H4 -0.881 -1.123 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.24161.09781.9851
N21.24162.07401.0308
H31.09782.07402.9933
H41.98511.03082.9933

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.476 H3 C1 N2 124.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.001      
2 N -0.541      
3 H 0.224      
4 H 0.318      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.556 -0.040 0.000 0.558
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.078 3.346 0.000
y 3.346 -11.225 0.000
z 0.000 0.000 -12.413
Traceless
 xyz
x 0.741 3.346 0.000
y 3.346 0.521 0.000
z 0.000 0.000 -1.262
Polar
3z2-r2-2.524
x2-y20.146
xy3.346
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.909 0.538 0.000
y 0.538 3.424 0.000
z 0.000 0.000 0.985


<r2> (average value of r2) Å2
<r2> 16.703
(<r2>)1/2 4.087