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/STO-3G

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/STO-3G
 hartrees
Energy at 0K-240.497922
Energy at 298.15K-240.502626
Nuclear repulsion energy122.066540
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/STO-3G
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' 3737 3051 1.15      
2 A' 3539 2889 0.40      
3 A' 1965 1604 37.03      
4 A' 1795 1466 7.05      
5 A' 1720 1404 8.33      
6 A' 1390 1135 62.19      
7 A' 1349 1101 23.82      
8 A' 1107 904 30.85      
9 A' 827 675 1.63      
10 A' 410 335 2.69      
11 A" 3711 3030 0.93      
12 A" 1781 1454 4.46      
13 A" 1300 1061 4.60      
14 A" 290 237 1.02      
15 A" 248 202 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 12584.0 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 10274.8 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/STO-3G
ABC
0.63886 0.25447 0.18847

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.307 0.292 0.000
O2 0.000 0.912 0.000
H3 2.019 1.119 0.000
H4 1.467 -0.323 0.889
H5 1.467 -0.323 -0.889
N6 -1.060 -0.015 0.000
O7 -0.672 -1.177 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.44651.09051.09311.09312.38672.4650
O21.44652.02932.11332.11331.40762.1940
H31.09052.02931.78151.78153.28053.5370
H41.09312.11331.78151.77882.69602.4688
H51.09312.11331.78151.77882.69602.4688
N62.38671.40763.28052.69602.69601.2250
O72.46502.19403.53702.46882.46881.2250

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 113.488 O2 C1 H3 105.379
O2 C1 H4 111.890 O2 C1 H5 111.890
O2 N6 O7 112.715 H3 C1 H4 109.341
H3 C1 H5 109.341 H4 C1 H5 108.912
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.077      
2 O -0.169      
3 H 0.089      
4 H 0.079      
5 H 0.079      
6 N 0.117      
7 O -0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.813 -0.252 0.000 1.831
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.871 0.482 0.000
y 0.482 -23.616 0.000
z 0.000 0.000 -19.839
Traceless
 xyz
x 0.857 0.482 0.000
y 0.482 -3.261 0.000
z 0.000 0.000 2.404
Polar
3z2-r24.809
x2-y22.745
xy0.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.264 0.491 0.000
y 0.491 2.421 0.000
z 0.000 0.000 1.197


<r2> (average value of r2) Å2
<r2> 64.782
(<r2>)1/2 8.049