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: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-63.665531
Energy at 298.15K-63.671300
Nuclear repulsion energy104.261111
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/CEP-121G
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' 3364 3070 4.69      
2 A' 3218 2937 17.23      
3 A' 1631 1489 148.49      
4 A' 1610 1469 512.72      
5 A' 1584 1446 47.19      
6 A' 1390 1268 246.23      
7 A' 1293 1179 17.59      
8 A' 1119 1021 153.95      
9 A' 949 866 14.84      
10 A' 698 637 3.68      
11 A' 596 544 32.06      
12 A' 342 312 7.58      
13 A" 3349 3056 17.09      
14 A" 1607 1466 13.26      
15 A" 1262 1152 2.65      
16 A" 778 710 23.92      
17 A" 205 187 1.66      
18 A" 128 116 4.95      

Unscaled Zero Point Vibrational Energy (zpe) 12561.0 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 11462.0 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 HF/CEP-121G
ABC
0.38823 0.15124 0.11113

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.637 0.000
O2 -1.246 0.565 0.000
O3 0.682 1.658 0.000
O4 0.717 -0.534 0.000
C5 -0.068 -1.782 0.000
H6 0.704 -2.534 0.000
H7 -0.676 -1.831 0.890
H8 -0.676 -1.831 -0.890

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.24761.22851.37232.41953.24742.70872.7087
O21.24762.21602.24902.62603.66112.61882.6188
O31.22852.21602.19213.52104.19183.84843.8484
O41.37232.24902.19211.47452.00002.10102.1010
C52.41952.62603.52101.47451.07741.07881.0788
H63.24743.66114.19182.00001.07741.78601.7860
H72.70872.61883.84842.10101.07881.78601.7798
H82.70872.61883.84842.10101.07881.78601.7798

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 116.356 O2 N1 O3 127.009
O2 N1 O4 118.213 O3 N1 O4 114.779
O4 C5 H6 102.076 O4 C5 H7 109.774
O4 C5 H8 109.774 H6 C5 H7 111.845
H6 C5 H8 111.845 H7 C5 H8 111.152
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.281      
2 O -0.236      
3 O -0.172      
4 O -0.245      
5 C -0.214      
6 H 0.197      
7 H 0.195      
8 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.254 -4.592 0.000 4.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.027 0.210 0.000
y 0.210 -26.763 0.000
z 0.000 0.000 -27.235
Traceless
 xyz
x -7.028 0.210 0.000
y 0.210 3.868 0.000
z 0.000 0.000 3.160
Polar
3z2-r26.320
x2-y2-7.264
xy0.210
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.106 0.689 0.000
y 0.689 5.744 0.000
z 0.000 0.000 2.626


<r2> (average value of r2) Å2
<r2> 84.496
(<r2>)1/2 9.192