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All results from a given calculation for CH3ONO (Methyl nitrite)

using model chemistry: MP2/6-31G

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 MP2/6-31G
 hartrees
Energy at 0K-244.011746
Energy at 298.15K-244.016163
HF Energy-243.516133
Nuclear repulsion energy117.857368
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 MP2/6-31G
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' 3233 3093 5.74      
2 A' 3082 2949 11.45      
3 A' 1558 1491 7.17      
4 A' 1495 1430 1.23      
5 A' 1329 1272 61.51      
6 A' 1171 1121 2.36      
7 A' 937 897 117.68      
8 A' 778 745 63.70      
9 A' 551 527 229.06      
10 A' 315 301 0.79      
11 A" 3171 3034 24.26      
12 A" 1548 1481 10.03      
13 A" 1165 1114 1.08      
14 A" 334 319 4.66      
15 A" 169 162 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 10417.7 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 9967.6 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 MP2/6-31G
ABC
0.62559 0.22664 0.17186

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.376 0.360 0.000
O2 0.000 0.934 0.000
H3 2.016 1.243 0.000
H4 1.539 -0.250 0.896
H5 1.539 -0.250 -0.896
N6 -1.098 -0.060 0.000
O7 -0.708 -1.244 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.49131.09041.09621.09622.51022.6300
O21.49132.03932.13912.13911.48172.2904
H31.09042.03931.80561.80563.37593.6885
H41.09622.13911.80561.79172.79242.6155
H51.09622.13911.80561.79172.79242.6155
N62.51021.48173.37592.79242.79241.2466
O72.63002.29043.68852.61552.61551.2466

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 115.195 O2 C1 H3 103.252
O2 C1 H4 110.596 O2 C1 H5 110.596
O2 N6 O7 113.898 H3 C1 H4 111.328
H3 C1 H5 111.328 H4 C1 H5 109.618
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability