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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-244.325972
Energy at 298.15K-244.330722
HF Energy-243.659308
Nuclear repulsion energy122.568639
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' 3266 3080 5.40      
2 A' 3124 2946 11.32      
3 A' 1582 1492 90.81      
4 A' 1551 1462 6.03      
5 A' 1489 1404 9.12      
6 A' 1213 1144 1.46      
7 A' 1050 990 154.91      
8 A' 884 834 102.61      
9 A' 715 675 107.93      
10 A' 368 347 2.59      
11 A" 3216 3033 15.75      
12 A" 1541 1453 8.60      
13 A" 1189 1121 1.09      
14 A" 376 355 2.43      
15 A" 223 210 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 10893.5 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 10272.6 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
0.65937 0.25112 0.18837

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 1.323 0.315 0.000
O2 0.000 0.884 0.000
H3 1.985 1.178 0.000
H4 1.484 -0.297 0.891
H5 1.484 -0.297 -0.891
N6 -1.028 -0.017 0.000
O7 -0.712 -1.178 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.44061.08751.09241.09242.37482.5249
O21.44062.00662.09492.09491.36712.1819
H31.08752.00661.79441.79443.24143.5817
H41.09242.09491.79441.78172.67962.5286
H51.09242.09491.79441.78172.67962.5286
N62.37481.36713.24142.67962.67961.2032
O72.52492.18193.58172.52862.52861.2032

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 115.495 O2 C1 H3 104.199
O2 C1 H4 110.849 O2 C1 H5 110.849
O2 N6 O7 116.036 H3 C1 H4 110.806
H3 C1 H5 110.806 H4 C1 H5 109.267
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability