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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-244.394304
Energy at 298.15K 
HF Energy-244.394304
Nuclear repulsion energy157.335767
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 PBEPBEultrafine/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' 3250 3221 0.46 102.43 0.10 0.19
2 A' 3219 3190 0.39 65.83 0.59 0.74
3 A' 3197 3167 0.99 78.38 0.39 0.56
4 A' 1506 1492 7.97 5.52 0.13 0.23
5 A' 1364 1352 24.80 15.11 0.56 0.72
6 A' 1324 1312 2.08 8.27 0.24 0.39
7 A' 1174 1164 4.74 9.45 0.26 0.42
8 A' 1112 1102 16.32 8.44 0.64 0.78
9 A' 1059 1049 1.22 8.99 0.16 0.28
10 A' 994 985 13.48 2.91 0.50 0.66
11 A' 909 901 2.11 4.98 0.66 0.80
12 A' 870 862 1.03 1.37 0.45 0.62
13 A' 756 749 10.56 6.83 0.15 0.26
14 A" 893 885 3.36 1.74 0.75 0.86
15 A" 852 844 5.22 1.42 0.75 0.86
16 A" 767 760 78.06 1.49 0.75 0.86
17 A" 615 609 10.91 0.16 0.75 0.86
18 A" 569 564 6.33 1.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12214.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 12103.7 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 PBEPBEultrafine/3-21G
ABC
0.31112 0.30017 0.15277

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.135 0.387 0.000
C2 0.650 -0.963 0.000
C3 0.000 1.157 0.000
N4 -0.687 -1.068 0.000
O5 -1.143 0.365 0.000
H6 2.166 0.718 0.000
H7 1.242 -1.875 0.000
H8 -0.164 2.230 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43421.37132.33132.27821.08342.26492.2545
C21.43422.21731.34102.23142.26391.08753.2950
C31.37132.21732.32861.39112.21023.27681.0854
N42.33131.34102.32861.50373.36622.09063.3392
O52.27822.23141.39111.50373.32853.27202.1069
H61.08342.26392.21023.36623.32852.75372.7774
H72.26491.08753.27682.09063.27202.75374.3393
H82.25453.29501.08543.33922.10692.77744.3393

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 114.245 C1 C2 H7 127.303
C1 C3 O5 111.118 C1 C3 H8 132.839
C2 C1 C3 104.412 C2 C1 H6 127.556
C2 N4 O5 103.179 C3 C1 H6 128.031
C3 O5 N4 107.046 N4 C2 H7 118.452
O5 C3 H8 116.043
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.333      
2 C 0.034      
3 C 0.111      
4 N -0.217      
5 O -0.307      
6 H 0.211      
7 H 0.248      
8 H 0.252      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.693 1.445 0.000 3.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.478 -2.477 0.000
y -2.477 -24.506 0.000
z 0.000 0.000 -30.349
Traceless
 xyz
x -1.050 -2.477 0.000
y -2.477 4.907 0.000
z 0.000 0.000 -3.857
Polar
3z2-r2-7.713
x2-y2-3.971
xy-2.477
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.730 -0.269 0.000
y -0.269 6.575 0.000
z 0.000 0.000 1.808


<r2> (average value of r2) Å2
<r2> 80.180
(<r2>)1/2 8.954