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

using model chemistry: MP2/CEP-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/CEP-31G*
 hartrees
Energy at 0K-48.822804
Energy at 298.15K-48.827532
HF Energy-48.179596
Nuclear repulsion energy68.321247
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/CEP-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' 3250 3085 13.70      
2 A' 3102 2945 22.76      
3 A' 1557 1478 112.87      
4 A' 1515 1438 6.98      
5 A' 1466 1392 10.34      
6 A' 1199 1138 2.41      
7 A' 1036 984 176.60      
8 A' 863 820 125.06      
9 A' 706 670 112.53      
10 A' 356 338 2.18      
11 A" 3207 3045 30.51      
12 A" 1504 1428 8.05      
13 A" 1175 1116 0.67      
14 A" 365 346 3.23      
15 A" 239 227 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 10769.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10224.7 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/CEP-31G*
ABC
0.64393 0.24602 0.18439

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.329 0.316 0.000
O2 0.000 0.909 0.000
H3 1.999 1.186 0.000
H4 1.476 -0.302 0.901
H5 1.476 -0.302 -0.901
N6 -1.058 -0.025 0.000
O7 -0.690 -1.197 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.45551.09831.10271.10272.41162.5225
O21.45552.01802.11132.11131.41102.2153
H31.09832.01801.81691.81693.28823.5926
H41.10272.11131.81691.80292.70422.5108
H51.10272.11131.81691.80292.70422.5108
N62.41161.41103.28822.70422.70421.2284
O72.52252.21533.59262.51082.51081.2284

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 114.545 O2 C1 H3 103.527
O2 C1 H4 110.485 O2 C1 H5 110.485
O2 N6 O7 113.959 H3 C1 H4 111.273
H3 C1 H5 111.273 H4 C1 H5 109.676
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability