return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3NO3 (Methyl nitrate)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-318.973363
Energy at 298.15K-318.978758
HF Energy-318.347135
Nuclear repulsion energy178.665386
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/SDD
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' 3206 3095 6.64      
2 A' 3059 2952 19.93      
3 A' 1785 1723 50.59      
4 A' 1535 1482 11.92      
5 A' 1478 1426 4.43      
6 A' 1176 1135 0.19      
7 A' 1143 1103 218.94      
8 A' 955 922 115.10      
9 A' 776 749 232.14      
10 A' 606 585 26.80      
11 A' 518 500 3.14      
12 A' 308 297 2.79      
13 A" 3186 3076 28.20      
14 A" 1510 1457 10.45      
15 A" 1150 1110 0.53      
16 A" 638 616 7.14      
17 A" 201 194 1.88      
18 A" 121 117 5.69      

Unscaled Zero Point Vibrational Energy (zpe) 11674.9 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 11269.8 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/SDD
ABC
0.35216 0.14189 0.10318

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.647 0.000
O2 -1.283 0.582 0.000
O3 0.766 1.671 0.000
O4 0.755 -0.645 0.000
C5 -0.154 -1.839 0.000
H6 0.571 -2.664 0.000
H7 -0.778 -1.849 0.905
H8 -0.778 -1.849 -0.905

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.28421.27891.49652.49133.35982.76672.7667
O21.28422.32002.37872.67213.73832.64302.6430
O31.27892.32002.31633.62914.33933.94903.9490
O41.49652.37872.31631.50072.02702.14892.1489
C52.49132.67213.62911.50071.09791.09921.0992
H63.35983.73834.33932.02701.09791.81741.8174
H72.76672.64303.94902.14891.09921.81741.8095
H82.76672.64303.94902.14891.09921.81741.8095

picture of Methyl nitrate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O4 C5 112.443 O2 N1 O3 129.688
O2 N1 O4 117.407 O3 N1 O4 112.905
O4 C5 H6 101.401 O4 C5 H7 110.534
O4 C5 H8 110.534 H6 C5 H7 111.620
H6 C5 H8 111.620 H7 C5 H8 110.796
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability