return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/cc-pVDZ

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=FULL/cc-pVDZ
 hartrees
Energy at 0K-244.380096
Energy at 298.15K-244.384846
HF Energy-243.682100
Nuclear repulsion energy122.891664
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=FULL/cc-pVDZ
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' 3252 3091 5.75      
2 A' 3097 2944 15.18      
3 A' 1605 1525 97.80      
4 A' 1498 1423 8.40      
5 A' 1445 1373 2.81      
6 A' 1191 1132 1.07      
7 A' 1051 999 124.73      
8 A' 877 833 103.27      
9 A' 681 647 151.65      
10 A' 370 351 1.41      
11 A" 3193 3034 20.81      
12 A" 1482 1409 8.60      
13 A" 1167 1109 1.29      
14 A" 374 355 2.05      
15 A" 225 214 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 10753.3 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 10220.0 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=FULL/cc-pVDZ
ABC
0.66532 0.25199 0.18939

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.309 0.314 0.000
O2 0.000 0.898 0.000
H3 1.992 1.171 0.000
H4 1.467 -0.308 0.895
H5 1.467 -0.308 -0.895
N6 -1.044 -0.031 0.000
O7 -0.685 -1.175 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.43381.09561.10111.10112.37822.4884
O21.43382.01072.09952.09951.39742.1830
H31.09562.01071.80651.80653.26513.5590
H41.10112.09951.80651.78942.67982.4863
H51.10112.09951.80651.78942.67982.4863
N62.37821.39743.26512.67982.67981.1986
O72.48842.18303.55902.48632.48631.1986

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 114.276 O2 C1 H3 104.502
O2 C1 H4 111.163 O2 C1 H5 111.163
O2 N6 O7 114.250 H3 C1 H4 110.646
H3 C1 H5 110.646 H4 C1 H5 108.697
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability