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 CH3ONO (Methyl nitrite)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS cis 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-243.775711
Energy at 298.15K-243.780637
HF Energy-243.775711
Nuclear repulsion energy126.359353
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 HF/Def2TZVPP
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' 3307 2998 15.09      
2 A' 3203 2904 21.85      
3 A' 1928 1747 199.82      
4 A' 1621 1469 10.53      
5 A' 1591 1442 0.24      
6 A' 1328 1204 3.07      
7 A' 1201 1089 362.22      
8 A' 996 903 83.45      
9 A' 879 797 20.98      
10 A' 392 355 4.94      
11 A" 3278 2971 27.72      
12 A" 1609 1459 8.78      
13 A" 1277 1158 3.00      
14 A" 361 327 3.47      
15 A" 240 217 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 11605.9 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 10519.6 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 HF/Def2TZVPP
ABC
0.72860 0.25715 0.19703

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.317 0.309 0.000
O2 0.000 0.838 0.000
H3 1.956 1.175 0.000
H4 1.490 -0.288 0.882
H5 1.490 -0.288 -0.882
N6 -1.009 -0.015 0.000
O7 -0.722 -1.131 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.41901.07671.07921.07922.34812.4957
O21.41901.98462.06572.06571.32092.0972
H31.07671.98461.77111.77113.19463.5339
H41.07922.06571.77111.76422.66452.5261
H51.07922.06571.77111.76422.66452.5261
N62.34811.32093.19462.66452.66451.1532
O72.49572.09723.53392.52612.52611.1532

picture of Methyl nitrite state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 N6 117.923 O2 C1 H3 104.517
O2 C1 H4 110.825 O2 C1 H5 110.825
O2 N6 O7 115.751 H3 C1 H4 110.473
H3 C1 H5 110.473 H4 C1 H5 109.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.022      
2 O -0.245      
3 H 0.094      
4 H 0.089      
5 H 0.089      
6 N 0.343      
7 O -0.349      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.275 0.325 0.000 2.298
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.719 0.230 0.000
y 0.230 -25.739 0.000
z 0.000 0.000 -21.839
Traceless
 xyz
x 2.070 0.230 0.000
y 0.230 -3.960 0.000
z 0.000 0.000 1.890
Polar
3z2-r23.781
x2-y24.020
xy0.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.318 0.542 0.000
y 0.542 4.353 0.000
z 0.000 0.000 3.081


<r2> (average value of r2) Å2
<r2> 63.829
(<r2>)1/2 7.989