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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-169.370764
Energy at 298.15K-169.374442
HF Energy-168.865697
Nuclear repulsion energy70.162901
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 MP2/6-311G*
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' 3199 3040 9.12      
2 A' 3075 2922 2.97      
3 A' 1568 1490 16.70      
4 A' 1495 1421 23.01      
5 A' 1414 1344 34.02      
6 A' 1180 1122 15.31      
7 A' 904 859 14.53      
8 A' 591 562 1.54      
9 A" 3183 3025 4.51      
10 A" 1495 1420 14.11      
11 A" 1006 956 3.33      
12 A" 134 127 1.63      

Unscaled Zero Point Vibrational Energy (zpe) 9621.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9143.7 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 MP2/6-311G*
ABC
2.00734 0.38367 0.34275

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.953 -0.556 0.000
N2 0.000 0.576 0.000
O3 1.164 0.212 0.000
H4 -0.426 -1.512 0.000
H5 -1.584 -0.440 0.884
H6 -1.584 -0.440 -0.884

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.48012.25231.09161.09241.0924
N21.48011.21972.13112.07922.0792
O32.25231.21972.34522.95952.9595
H41.09162.13112.34521.80911.8091
H51.09242.07922.95951.80911.7685
H61.09242.07922.95951.80911.7685

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.720 N2 C1 H4 111.021
N2 C1 H5 106.883 N2 C1 H6 106.883
H4 C1 H5 111.853 H4 C1 H6 111.853
H5 C1 H6 108.081
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability