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: B1B95/cc-pVTZ

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 B1B95/cc-pVTZ
 hartrees
Energy at 0K-93.949676
Energy at 298.15K-93.950970
HF Energy-93.949676
Nuclear repulsion energy28.397670
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 B1B95/cc-pVTZ
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' 3351 3207 2.51      
2 A' 2987 2859 47.29      
3 A' 1887 1806 28.81      
4 A' 1007 963 143.12      
5 A' 862 825 116.13      
6 A" 914 875 4.77      

Unscaled Zero Point Vibrational Energy (zpe) 5503.7 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 5267.6 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 B1B95/cc-pVTZ
ABC
13.12814 1.32045 1.19978

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.110 0.633 0.000
N2 0.110 -0.581 0.000
H3 -0.679 1.393 0.000
H4 -0.756 -1.123 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21441.09561.9585
N21.21442.12591.0220
H31.09562.12592.5169
H41.95851.02202.5169

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 122.025 H3 C1 N2 133.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.112      
2 N -0.183      
3 H 0.118      
4 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.121 0.288 0.000 2.140
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.143 0.572 0.000
y 0.572 -11.038 0.000
z 0.000 0.000 -12.607
Traceless
 xyz
x -0.320 0.572 0.000
y 0.572 1.337 0.000
z 0.000 0.000 -1.017
Polar
3z2-r2-2.034
x2-y2-1.105
xy0.572
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.491 0.077 0.000
y 0.077 4.119 0.000
z 0.000 0.000 1.801


<r2> (average value of r2) Å2
<r2> 16.613
(<r2>)1/2 4.076

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-93.956905
Energy at 298.15K-93.958249
HF Energy-93.956905
Nuclear repulsion energy28.319476
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 B1B95/cc-pVTZ
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' 3467 3318 8.32      
2 A' 3033 2903 26.68      
3 A' 1832 1754 29.18      
4 A' 1190 1139 10.55      
5 A' 907 868 222.62      
6 A" 980 938 109.09      

Unscaled Zero Point Vibrational Energy (zpe) 5704.6 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 5459.9 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 B1B95/cc-pVTZ
ABC
13.83012 1.31030 1.19690

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.644 0.000
N2 -0.000 -0.580 0.000
H3 0.898 1.269 0.000
H4 -0.892 -1.070 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22451.09421.9319
N21.22452.05571.0170
H31.09422.05572.9448
H41.93191.01702.9448

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.764 H3 C1 N2 124.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.145      
2 N -0.191      
3 H 0.142      
4 H 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.424 0.108 0.000 0.438
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.295 3.099 0.000
y 3.099 -11.399 0.000
z 0.000 0.000 -12.644
Traceless
 xyz
x 0.727 3.099 0.000
y 3.099 0.570 0.000
z 0.000 0.000 -1.297
Polar
3z2-r2-2.595
x2-y20.104
xy3.099
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.633 0.384 0.000
y 0.384 3.922 0.000
z 0.000 0.000 1.844


<r2> (average value of r2) Å2
<r2> 16.560
(<r2>)1/2 4.069