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 C3H3NO (Isoxazole)

using model chemistry: wB97X-D/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/6-31G(2df,p)
 hartrees
Energy at 0K-245.968635
Energy at 298.15K 
HF Energy-245.968635
Nuclear repulsion energy163.079901
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 wB97X-D/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3317 3317 0.10 104.02 0.11 0.19
2 A' 3290 3290 0.03 45.94 0.64 0.78
3 A' 3274 3274 1.42 87.28 0.40 0.57
4 A' 1636 1636 8.97 1.03 0.15 0.25
5 A' 1496 1496 31.18 29.29 0.27 0.42
6 A' 1426 1426 9.76 1.50 0.43 0.60
7 A' 1272 1272 8.06 11.58 0.22 0.36
8 A' 1191 1191 15.21 2.46 0.57 0.73
9 A' 1148 1148 9.14 10.77 0.17 0.29
10 A' 1057 1057 3.30 4.04 0.57 0.73
11 A' 971 971 34.11 4.93 0.11 0.19
12 A' 939 939 5.02 2.73 0.74 0.85
13 A' 933 933 2.95 1.62 0.74 0.85
14 A" 934 934 4.30 1.55 0.75 0.86
15 A" 901 901 0.08 0.27 0.75 0.86
16 A" 803 803 48.09 0.84 0.75 0.86
17 A" 664 664 2.16 0.42 0.75 0.86
18 A" 620 620 13.61 1.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12934.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12934.8 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 wB97X-D/6-31G(2df,p)
ABC
0.33144 0.32512 0.16412

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.364 0.000
C2 0.610 -0.959 0.000
C3 0.000 1.117 0.000
N4 -0.695 -0.976 0.000
O5 -1.082 0.340 0.000
H6 2.150 0.692 0.000
H7 1.147 -1.896 0.000
H8 -0.184 2.180 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41981.35342.26042.20701.07622.26102.2380
C21.41982.16391.30572.13362.25741.08013.2377
C31.35342.16392.20581.33212.19153.22441.0785
N42.26041.30572.20581.37223.29812.05883.1972
O52.20702.13361.33211.37223.25113.15752.0471
H61.07622.25742.19153.29813.25112.77622.7678
H72.26101.08013.22442.05883.15752.77624.2880
H82.23803.23771.07853.19722.04712.76784.2880

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.002 C1 C2 H7 128.995
C1 C3 O5 110.533 C1 C3 H8 133.620
C2 C1 C3 102.551 C2 C1 H6 128.966
C2 N4 O5 105.618 C3 C1 H6 128.484
C3 O5 N4 109.297 N4 C2 H7 119.003
O5 C3 H8 115.847
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.295      
2 C 0.011      
3 C 0.069      
4 N -0.123      
5 O -0.170      
6 H 0.160      
7 H 0.166      
8 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.466 1.522 0.000 2.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.767 -2.548 0.000
y -2.548 -24.450 0.000
z 0.000 0.000 -29.315
Traceless
 xyz
x -0.884 -2.548 0.000
y -2.548 4.090 0.000
z 0.000 0.000 -3.206
Polar
3z2-r2-6.413
x2-y2-3.316
xy-2.548
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.096 -0.230 0.000
y -0.230 6.723 0.000
z 0.000 0.000 2.936


<r2> (average value of r2) Å2
<r2> 75.749
(<r2>)1/2 8.703