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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-168.645318
Energy at 298.15K-168.648933
HF Energy-168.645318
Nuclear repulsion energy68.806779
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 PBE1PBE/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' 3193 3066 6.22      
2 A' 3066 2945 0.15      
3 A' 1524 1464 13.90      
4 A' 1430 1373 13.71      
5 A' 1369 1314 51.99      
6 A' 1135 1090 18.62      
7 A' 785 754 25.24      
8 A' 551 530 1.81      
9 A" 3154 3030 2.31      
10 A" 1513 1453 17.17      
11 A" 975 936 0.10      
12 A" 140 134 2.94      

Unscaled Zero Point Vibrational Energy (zpe) 9417.3 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 9044.4 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 PBE1PBE/3-21G
ABC
1.89008 0.37202 0.33018

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.975 -0.562 0.000
N2 0.000 0.601 0.000
O3 1.187 0.196 0.000
H4 -0.429 -1.507 0.000
H5 -1.606 -0.448 0.888
H6 -1.606 -0.448 -0.888

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.51752.29061.09161.09521.0952
N21.51751.25392.15122.11432.1143
O32.29061.25392.34723.00063.0006
H41.09162.15122.34721.81511.8151
H51.09522.11433.00061.81511.7754
H61.09522.11433.00061.81511.7754

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 111.121 N2 C1 H4 110.001
N2 C1 H5 106.928 N2 C1 H6 106.928
H4 C1 H5 112.201 H4 C1 H6 112.201
H5 C1 H6 108.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.534      
2 N 0.041      
3 O -0.269      
4 H 0.243      
5 H 0.260      
6 H 0.260      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.097 -1.422 0.000 2.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.043 0.422 0.000
y 0.422 -18.890 0.000
z 0.000 0.000 -16.399
Traceless
 xyz
x -0.398 0.422 0.000
y 0.422 -1.669 0.000
z 0.000 0.000 2.067
Polar
3z2-r24.134
x2-y20.847
xy0.422
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.936 0.227 0.000
y 0.227 2.379 0.000
z 0.000 0.000 2.078


<r2> (average value of r2) Å2
<r2> 42.396
(<r2>)1/2 6.511