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

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-244.345991
Energy at 298.15K-244.350722
HF Energy-243.661038
Nuclear repulsion energy122.682679
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 QCISD/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' 3216 3063 8.15      
2 A' 3094 2946 13.94      
3 A' 1694 1613 123.94      
4 A' 1539 1465 7.86      
5 A' 1485 1414 4.97      
6 A' 1216 1158 0.45      
7 A' 1057 1007 138.32      
8 A' 883 841 72.93      
9 A' 713 679 73.68      
10 A' 373 355 3.23      
11 A" 3177 3025 19.86      
12 A" 1529 1456 7.69      
13 A" 1183 1127 1.39      
14 A" 357 340 3.29      
15 A" 220 209 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 10867.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 10348.7 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 QCISD/6-31G*
ABC
0.66622 0.24966 0.18813

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.327 0.317 0.000
O2 0.000 0.880 0.000
H3 1.987 1.186 0.000
H4 1.492 -0.294 0.893
H5 1.492 -0.294 -0.893
N6 -1.029 -0.020 0.000
O7 -0.717 -1.175 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.44131.09061.09471.09472.37982.5309
O21.44132.01042.09782.09781.36622.1760
H31.09062.01041.79771.79773.24753.5894
H41.09472.09781.79771.78612.68822.5403
H51.09472.09781.79771.78612.68822.5403
N62.37981.36623.24752.68822.68821.1967
O72.53092.17603.58942.54032.54031.1967

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 115.885 O2 C1 H3 104.270
O2 C1 H4 110.884 O2 C1 H5 110.884
O2 N6 O7 116.059 H3 C1 H4 110.701
H3 C1 H5 110.701 H4 C1 H5 109.332
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability