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

using model chemistry: MP2/cc-pVTZ

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 MP2/cc-pVTZ
 hartrees
Energy at 0K-244.621116
Energy at 298.15K 
HF Energy-243.755113
Nuclear repulsion energy124.892405
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/cc-pVTZ
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' 3229 3066 1.30      
2 A' 3122 2964 1.41      
3 A' 1499 1424 10.96      
4 A' 1426 1354 31.47      
5 A' 1418 1346 30.49      
6 A' 1148 1090 0.32      
7 A' 947 900 6.75      
8 A' 678 644 24.75      
9 A' 610 579 3.30      
10 A" 3256 3092 0.01      
11 A" 1774 1685 132.75      
12 A" 1489 1414 21.80      
13 A" 1124 1067 3.11      
14 A" 482 457 0.58      
15 A" 24 23 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11112.8 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 10551.6 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/cc-pVTZ
ABC
0.40690 0.35534 0.19670

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.315 0.000
N2 -0.010 0.169 0.000
H3 1.041 -1.624 0.000
H4 -0.493 -1.653 0.901
H5 -0.493 -1.653 -0.901
O6 0.001 0.727 -1.093
O7 0.001 0.727 1.093

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48391.08541.08231.08232.31652.3165
N21.48392.07852.08962.08961.22741.2274
H31.08542.07851.78011.78012.79412.7941
H41.08232.08961.78011.80303.14482.4390
H51.08232.08961.78011.80302.43903.1448
O62.31651.22742.79413.14482.43902.1857
O72.31651.22742.79412.43903.14482.1857

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 117.067 C1 N2 O7 117.067
N2 C1 H3 106.972 N2 C1 H4 108.008
N2 C1 H5 108.008 H3 C1 H4 110.411
H3 C1 H5 110.411 H4 C1 H5 112.801
O6 N2 O7 125.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability