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

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-317.273284
Energy at 298.15K-317.278739
HF Energy-316.638168
Nuclear repulsion energy180.100427
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' 3156 3059 4.69      
2 A' 3066 2971 10.18      
3 A' 1579 1530 10.97      
4 A' 1489 1443 0.42      
5 A' 1310 1269 171.02      
6 A' 1156 1121 21.05      
7 A' 1086 1052 163.99      
8 A' 973 943 62.84      
9 A' 781 757 52.21      
10 A' 597 578 2.99      
11 A' 508 492 3.49      
12 A' 335 324 4.40      
13 A" 3148 3051 17.89      
14 A" 1556 1508 7.25      
15 A" 1166 1130 0.39      
16 A" 638 618 16.21      
17 A" 224 217 1.00      
18 A" 124 121 3.86      

Unscaled Zero Point Vibrational Energy (zpe) 11444.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 11091.6 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 QCISD/3-21G
ABC
0.35504 0.14636 0.10574

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)
N1 0.000 0.642 0.000
O2 -1.275 0.524 0.000
O3 0.726 1.675 0.000
O4 0.793 -0.638 0.000
C5 -0.154 -1.794 0.000
H6 0.526 -2.651 0.000
H7 -0.781 -1.785 0.896
H8 -0.781 -1.785 -0.896

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.28021.26281.50572.44033.33412.70212.7021
O21.28022.30842.37232.57443.64982.52562.5256
O31.26282.30842.31363.57834.32993.87863.8786
O41.50572.37232.31361.49452.03042.14412.1441
C52.44032.57443.57831.49451.09401.09371.0937
H63.33413.64984.32992.03041.09401.80561.8056
H72.70212.52563.87862.14411.09371.80561.7926
H82.70212.52563.87862.14411.09371.80561.7926

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 108.849 O2 N1 O3 130.394
O2 N1 O4 116.526 O3 N1 O4 113.080
O4 C5 H6 102.214 O4 C5 H7 110.920
O4 C5 H8 110.920 H6 C5 H7 111.251
H6 C5 H8 111.251 H7 C5 H8 110.081
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability