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All results from a given calculation for CH3NO (nitrosomethane)

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 1A'
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-168.219010
Energy at 298.15K-168.222536
HF Energy-167.856435
Nuclear repulsion energy67.491923
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' 3150 3053 7.98      
2 A' 3041 2948 2.08      
3 A' 1541 1494 11.07      
4 A' 1411 1367 6.61      
5 A' 1261 1222 16.44      
6 A' 1107 1073 18.60      
7 A' 739 716 16.02      
8 A' 530 514 1.14      
9 A" 3123 3027 8.18      
10 A" 1542 1495 9.42      
11 A" 989 959 1.25      
12 A" 110 107 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 9271.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8986.3 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
1.80289 0.35848 0.31721

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 -1.000 -0.570 0.000
N2 0.000 0.621 0.000
O3 1.211 0.188 0.000
H4 -0.438 -1.509 0.000
H5 -1.624 -0.462 0.896
H6 -1.624 -0.462 -0.896

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.55512.33791.09451.09691.0969
N21.55511.28602.17422.14792.1479
O32.33791.28602.36653.04403.0440
H41.09452.17422.36651.81811.8181
H51.09692.14793.04401.81811.7911
H61.09692.14793.04401.81811.7911

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 110.393 N2 C1 H4 109.045
N2 C1 H5 106.907 N2 C1 H6 106.907
H4 C1 H5 112.124 H4 C1 H6 112.124
H5 C1 H6 109.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability