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 CHNH2 (aminomethylene)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-93.918956
Energy at 298.15K-93.921876
HF Energy-93.918956
Nuclear repulsion energy32.219141
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 PBEPBE/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' 3351 3321 3.32 119.95 0.46 0.63
2 A' 3059 3032 111.12 454.55 0.33 0.50
3 A' 2703 2678 150.11 133.14 0.58 0.73
4 A' 1696 1681 1.41 46.26 0.41 0.58
5 A' 1412 1399 25.45 10.30 0.72 0.84
6 A' 1291 1279 10.16 1.72 0.71 0.83
7 A' 1053 1044 40.91 25.37 0.54 0.70
8 A" 1135 1125 12.25 1.14 0.75 0.86
9 A" 877 869 219.46 2.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8288.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 8213.3 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 PBEPBE/3-21G
ABC
6.56398 1.09082 0.93537

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.063 0.804 0.000
N2 0.063 -0.530 0.000
H3 -1.033 1.102 0.000
H4 -0.753 -1.187 0.000
H5 0.967 -1.025 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5
C11.33411.13582.15122.0401
N21.33411.96651.04691.0309
H31.13581.96652.30662.9201
H42.15121.04692.30661.7276
H52.04011.03092.92011.7276

picture of aminomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 128.841 C1 N2 H5 118.659
N2 C1 H3 105.250 H4 N2 H5 112.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 N -0.653      
3 H 0.133      
4 H 0.285      
5 H 0.331      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.180 -3.288 0.000 3.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.756 -2.223 0.000
y -2.223 -13.247 0.000
z 0.000 0.000 -13.399
Traceless
 xyz
x 1.567 -2.223 0.000
y -2.223 -0.669 0.000
z 0.000 0.000 -0.898
Polar
3z2-r2-1.796
x2-y21.491
xy-2.223
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.675 -0.199 0.000
y -0.199 3.744 0.000
z 0.000 0.000 1.194


<r2> (average value of r2) Å2
<r2> 20.135
(<r2>)1/2 4.487