return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CHNH2 (aminomethylene)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-94.440203
Energy at 298.15K-94.443091
HF Energy-94.440203
Nuclear repulsion energy32.510073
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/6-31G*
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' 3421 3365 2.42 123.16 0.48 0.65
2 A' 3172 3120 92.85 460.68 0.32 0.49
3 A' 2814 2767 140.65 136.83 0.55 0.71
4 A' 1675 1647 1.53 42.61 0.40 0.58
5 A' 1422 1398 10.08 8.38 0.64 0.78
6 A' 1356 1334 15.27 3.18 0.74 0.85
7 A' 1046 1029 34.60 22.55 0.50 0.66
8 A" 1138 1119 10.47 1.35 0.75 0.86
9 A" 783 770 173.98 1.89 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8413.2 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 8274.3 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 PBEPBEultrafine/6-31G*
ABC
6.66330 1.11255 0.95337

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.063 0.797 0.000
N2 0.063 -0.524 0.000
H3 -1.025 1.084 0.000
H4 -0.747 -1.175 0.000
H5 0.959 -1.023 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5
C11.32091.12512.13182.0285
N21.32091.94131.03921.0259
H31.12511.94132.27582.8940
H42.13181.03922.27581.7134
H52.02851.02592.89401.7134

picture of aminomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 128.786 C1 N2 H5 119.082
N2 C1 H3 104.773 H4 N2 H5 112.132
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.160      
2 N -0.591      
3 H 0.099      
4 H 0.305      
5 H 0.347      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.074 -3.198 0.000 3.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.736 -2.038 0.000
y -2.038 -13.156 0.000
z 0.000 0.000 -13.410
Traceless
 xyz
x 1.548 -2.038 0.000
y -2.038 -0.583 0.000
z 0.000 0.000 -0.964
Polar
3z2-r2-1.929
x2-y21.421
xy-2.038
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.891 -0.152 0.000
y -0.152 4.006 0.000
z 0.000 0.000 1.423


<r2> (average value of r2) Å2
<r2> 19.889
(<r2>)1/2 4.460