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

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-242.775877
Energy at 298.15K-242.780019
HF Energy-242.274783
Nuclear repulsion energy118.035349
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/3-21G
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' 3110 3014 13.80      
2 A' 3036 2942 31.53      
3 A' 1583 1534 4.17      
4 A' 1487 1441 12.33      
5 A' 1364 1322 91.09      
6 A' 1179 1142 5.83      
7 A' 979 948 66.46      
8 A' 809 784 166.19      
9 A' 535 518 2.86      
10 A' 330 320 5.72      
11 A" 3113 3017 29.57      
12 A" 1566 1518 2.40      
13 A" 1150 1115 0.19      
14 A" 193 187 0.64      
15 A" 95 92 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 10262.2 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 9946.1 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/3-21G
ABC
0.59932 0.23660 0.17531

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.344 0.322 0.000
O2 0.000 0.972 0.000
H3 2.038 1.165 0.000
H4 1.478 -0.299 0.893
H5 1.478 -0.299 -0.893
N6 -1.103 -0.063 0.000
O7 -0.667 -1.229 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.49321.09261.09611.09612.47742.5396
O21.49322.04752.14452.14451.51272.3004
H31.09262.04751.80491.80493.37323.6129
H41.09612.14451.80491.78632.74162.5024
H51.09612.14451.80491.78632.74162.5024
N62.47741.51273.37322.74162.74161.2459
O72.53962.30043.61292.50242.50241.2459

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 111.012 O2 C1 H3 103.629
O2 C1 H4 110.901 O2 C1 H5 110.901
O2 N6 O7 112.648 H3 C1 H4 111.099
H3 C1 H5 111.099 H4 C1 H5 109.143
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability