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All results from a given calculation for CH3NO2 (Methane, nitro-)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS Os out of place 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-244.689907
Energy at 298.15K-244.684647
HF Energy-243.661514
Nuclear repulsion energy127.724943
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 CBS-Q
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' 3356 3356 2.15 47.29 0.72 0.84
2 A' 3252 3252 1.80 95.08 0.03 0.06
3 A' 1688 1688 119.56 11.80 0.39 0.57
4 A' 1609 1609 11.06 11.74 0.75 0.86
5 A' 1557 1557 0.27 0.99 0.75 0.86
6 A' 1266 1266 2.30 0.87 0.75 0.86
7 A' 1059 1059 7.21 9.65 0.10 0.19
8 A' 751 751 40.89 5.86 0.47 0.64
9 A' 693 693 15.24 2.32 0.66 0.80
10 A" 3391 3391 0.93 41.49 0.75 0.86
11 A" 1877 1877 611.21 0.76 0.75 0.86
12 A" 1596 1596 40.10 10.78 0.75 0.86
13 A" 1230 1230 30.95 3.48 0.75 0.86
14 A" 534 534 1.27 1.19 0.75 0.86
15 A" 28 28 0.02 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11941.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11941.9 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 CBS-Q
ABC
0.40427 0.35221 0.19528

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.304 0.000
N2 -0.012 0.178 0.000
H3 1.043 -1.602 0.000
H4 -0.492 -1.640 0.900
H5 -0.492 -1.640 -0.900
O6 0.001 0.716 -1.055
O7 0.001 0.716 1.055

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48181.08341.07931.07932.27912.2791
N21.48182.06892.08392.08391.18481.1848
H31.08342.06891.77901.77902.75192.7519
H41.07932.08391.77901.79923.10072.4118
H51.07932.08391.77901.79922.41183.1007
O62.27911.18482.75193.10072.41182.1107
O72.27911.18482.75192.41183.10072.1107

picture of Methane, nitro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O6 117.016 C1 N2 O7 117.016
N2 C1 H3 106.479 N2 C1 H4 107.881
N2 C1 H5 107.881 H3 C1 H4 110.692
H3 C1 H5 110.692 H4 C1 H5 112.924
O6 N2 O7 125.936
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability