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

using model chemistry: G2

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 G2
 hartrees
Energy at 0K-244.679120
Energy at 298.15K-244.673809
HF Energy-243.661992
Nuclear repulsion energy127.393143
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 HF/6-31G*
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' 3369 3175 2.50 47.18 0.70 0.83
2 A' 3272 3083 1.93 96.37 0.03 0.06
3 A' 1689 1591 103.97 12.25 0.35 0.52
4 A' 1620 1526 11.34 12.68 0.75 0.85
5 A' 1571 1480 0.12 1.25 0.75 0.86
6 A' 1271 1198 1.99 1.21 0.75 0.85
7 A' 1052 991 4.82 9.95 0.10 0.18
8 A' 744 701 42.03 5.10 0.48 0.65
9 A' 690 650 15.75 2.15 0.67 0.80
10 A" 3404 3208 1.04 41.39 0.75 0.86
11 A" 1880 1771 582.82 0.79 0.75 0.86
12 A" 1607 1515 37.84 11.18 0.75 0.86
13 A" 1233 1162 31.45 3.83 0.75 0.86
14 A" 530 499 1.45 0.99 0.75 0.86
15 A" 19 18 0.02 0.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11975.3 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 11283.1 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/6-31G*
ABC
0.39928 0.35244 0.19413

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.320 0.000
N2 -0.015 0.166 0.000
H3 1.048 -1.629 0.000
H4 -0.497 -1.658 0.905
H5 -0.497 -1.658 -0.905
O6 0.002 0.731 -1.104
O7 0.002 0.731 1.104

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48601.09031.08721.08722.32932.3293
N21.48602.08602.09212.09211.24011.2401
H31.09032.08601.79041.79042.80782.8078
H41.08722.09211.79041.80973.16082.4487
H51.08722.09211.79041.80972.44873.1608
O62.32931.24012.80783.16082.44872.2072
O72.32931.24012.80782.44873.16082.2072

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 117.099 C1 N2 O7 117.099
N2 C1 H3 106.540 N2 C1 H4 107.949
N2 C1 H5 107.949 H3 C1 H4 110.625
H3 C1 H5 110.625 H4 C1 H5 112.877
O6 N2 O7 125.774
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability