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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-168.233255
Energy at 298.15K-168.236729
HF Energy-167.849717
Nuclear repulsion energy66.716904
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 MP4/3-21G
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' 3148 3053        
2 A' 3037 2945        
3 A' 1537 1491        
4 A' 1400 1358        
5 A' 1140 1106        
6 A' 1030 999        
7 A' 730 708        
8 A' 517 501        
9 A" 3123 3029        
10 A" 1543 1496        
11 A" 978 949        
12 A" 103 100        

Unscaled Zero Point Vibrational Energy (zpe) 9142.6 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 8866.5 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 MP4/3-21G
ABC
1.73731 0.35356 0.31134

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.017 -0.550 0.000
N2 0.000 0.633 0.000
O3 1.231 0.155 0.000
H4 -0.463 -1.495 0.000
H5 -1.641 -0.436 0.896
H6 -1.641 -0.436 -0.896

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.56032.35691.09521.09751.0975
N21.56031.32052.17762.15362.1536
O32.35691.32052.36563.06623.0662
H41.09522.17762.36561.81931.8193
H51.09752.15363.06621.81931.7923
H61.09752.15363.06621.81931.7923

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 109.512 N2 C1 H4 108.910
N2 C1 H5 106.955 N2 C1 H6 106.955
H4 C1 H5 112.136 H4 C1 H6 112.136
H5 C1 H6 109.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability