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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-244.686512
Energy at 298.15K 
HF Energy-244.686512
Nuclear repulsion energy164.875072
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/Def2TZVPP
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' 3438 3116 0.34 105.93 0.11 0.19
2 A' 3413 3093 0.24 42.14 0.69 0.81
3 A' 3393 3076 3.71 84.90 0.37 0.54
4 A' 1777 1611 20.35 1.98 0.72 0.84
5 A' 1619 1467 49.40 48.70 0.14 0.24
6 A' 1532 1388 19.54 2.37 0.75 0.86
7 A' 1377 1248 9.96 12.14 0.21 0.35
8 A' 1267 1148 26.04 4.43 0.14 0.24
9 A' 1215 1101 13.35 14.09 0.25 0.41
10 A' 1103 1000 3.36 1.57 0.10 0.18
11 A' 1039 941 58.15 4.13 0.17 0.29
12 A' 1008 913 8.86 3.59 0.73 0.84
13 A' 997 904 0.66 1.95 0.54 0.70
14 A" 1051 952 4.57 1.96 0.75 0.86
15 A" 1032 935 0.13 0.58 0.75 0.86
16 A" 872 791 66.42 0.09 0.75 0.86
17 A" 704 638 2.92 0.23 0.75 0.86
18 A" 648 587 17.61 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13741.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 12455.3 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/Def2TZVPP
ABC
0.34079 0.32979 0.16760

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.114 0.368 0.000
C2 0.593 -0.960 0.000
C3 0.000 1.107 0.000
N4 -0.683 -0.963 0.000
O5 -1.068 0.337 0.000
H6 2.130 0.691 0.000
H7 1.123 -1.889 0.000
H8 -0.171 2.161 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42681.33662.23652.18171.06572.25732.2056
C21.42682.15051.27642.10752.25531.06953.2133
C31.33662.15052.17971.31602.16983.19961.0679
N42.23651.27642.17971.35593.26302.03003.1657
O52.18172.10751.31601.35593.21663.12352.0322
H61.06572.25532.16983.26303.21662.76942.7300
H72.25731.06953.19962.03003.12352.76944.2518
H82.20563.21331.06793.16572.03222.73004.2518

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.531 C1 C2 H7 128.890
C1 C3 O5 110.663 C1 C3 H8 132.755
C2 C1 C3 102.144 C2 C1 H6 129.034
C2 N4 O5 106.340 C3 C1 H6 128.822
C3 O5 N4 109.321 N4 C2 H7 119.579
O5 C3 H8 116.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.231      
2 C 0.110      
3 C 0.193      
4 N -0.177      
5 O -0.216      
6 H 0.104      
7 H 0.101      
8 H 0.117      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.750 1.537 0.000 3.150
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.788 -2.882 0.000
y -2.882 -24.878 0.000
z 0.000 0.000 -30.313
Traceless
 xyz
x -1.193 -2.882 0.000
y -2.882 4.673 0.000
z 0.000 0.000 -3.480
Polar
3z2-r2-6.959
x2-y2-3.910
xy-2.882
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.403 -0.276 0.000
y -0.276 6.695 0.000
z 0.000 0.000 3.889


<r2> (average value of r2) Å2
<r2> 75.064
(<r2>)1/2 8.664