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 C2H5NO3 (Nitric acid, ethyl ester)

using model chemistry: B2PLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B2PLYP/6-31G**
 hartrees
Energy at 0K-359.182867
Energy at 298.15K-359.190755
HF Energy-358.839001
Nuclear repulsion energy250.131876
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 B2PLYP/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' 3184 3184 14.71      
2 A' 3113 3113 11.41      
3 A' 3101 3101 11.14      
4 A' 1741 1741 296.92      
5 A' 1555 1555 2.77      
6 A' 1536 1536 5.35      
7 A' 1455 1455 2.48      
8 A' 1418 1418 8.35      
9 A' 1314 1314 258.85      
10 A' 1161 1161 17.28      
11 A' 1055 1055 60.17      
12 A' 938 938 62.45      
13 A' 869 869 205.80      
14 A' 707 707 16.21      
15 A' 566 566 0.76      
16 A' 379 379 0.54      
17 A' 228 228 0.51      
18 A" 3197 3197 25.02      
19 A" 3167 3167 7.43      
20 A" 1523 1523 5.89      
21 A" 1305 1305 0.38      
22 A" 1201 1201 4.50      
23 A" 837 837 0.24      
24 A" 755 755 15.05      
25 A" 262 262 0.49      
26 A" 132 132 1.08      
27 A" 87 87 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 18392.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18392.4 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 B2PLYP/6-31G**
ABC
0.32900 0.07323 0.06128

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.105 -0.314 0.000
O2 0.000 0.569 0.000
O3 2.170 0.266 0.000
O4 0.869 -1.512 0.000
C5 -1.281 -0.110 0.000
C6 -2.318 0.994 0.000
H7 -1.351 -0.743 0.885
H8 -1.351 -0.743 -0.885
H9 -3.315 0.551 0.000
H10 -2.217 1.621 0.886
H11 -2.217 1.621 -0.886

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.41501.21301.22102.39503.66462.64572.64574.50383.94583.9458
O21.41502.19112.25581.45022.35652.08122.08123.31492.60912.6091
O31.21302.19112.20383.47174.54663.76833.76835.49224.67654.6765
O41.22102.25582.20382.56704.05442.51062.51064.66484.48644.4864
C52.39501.45023.47172.56701.51461.09061.09062.13832.15822.1582
C63.66462.35654.54664.05441.51462.17652.17651.09111.08981.0898
H72.64572.08123.76832.51061.09062.17651.77072.51302.51803.0784
H82.64572.08123.76832.51061.09062.17651.77072.51303.07842.5180
H94.50383.31495.49224.66482.13831.09112.51302.51301.77041.7704
H103.94582.60914.67654.48642.15821.08982.51803.07841.77041.7714
H113.94582.60914.67654.48642.15821.08983.07842.51801.77041.7714

picture of Nitric acid, ethyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 C5 113.415 O2 N1 O3 112.747
O2 N1 O4 117.496 O2 C5 C6 105.257
O2 C5 H7 109.172 O2 C5 H8 109.172
O3 N1 O4 129.757 C5 C6 H9 109.220
C5 C6 H10 110.872 C5 C6 H11 110.872
C6 C5 H7 112.299 C6 C5 H8 112.299
H7 C5 H8 108.539 H9 C6 H10 108.543
H9 C6 H11 108.543 H10 C6 H11 108.728
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.730      
2 O -0.398      
3 O -0.342      
4 O -0.359      
5 C 0.052      
6 C -0.351      
7 H 0.135      
8 H 0.135      
9 H 0.126      
10 H 0.137      
11 H 0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.343 0.210 0.000 3.350
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.147 -0.190 0.000
y -0.190 -37.564 0.000
z 0.000 0.000 -33.119
Traceless
 xyz
x 0.195 -0.190 0.000
y -0.190 -3.431 0.000
z 0.000 0.000 3.236
Polar
3z2-r26.471
x2-y22.417
xy-0.190
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.101 -0.142 0.000
y -0.142 6.158 0.000
z 0.000 0.000 4.196


<r2> (average value of r2) Å2
<r2> 178.804
(<r2>)1/2 13.372