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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: HF/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-244.677286
Energy at 298.15K 
HF Energy-244.677286
Nuclear repulsion energy164.828822
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/cc-pVTZ
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' 3435 3126 0.42 103.78 0.13 0.23
2 A' 3409 3103 0.36 43.16 0.67 0.80
3 A' 3390 3085 4.04 85.92 0.38 0.55
4 A' 1778 1618 19.36 1.76 0.74 0.85
5 A' 1619 1473 49.04 43.14 0.16 0.28
6 A' 1531 1394 19.63 2.21 0.75 0.86
7 A' 1376 1252 10.31 11.39 0.24 0.39
8 A' 1267 1153 25.75 3.76 0.19 0.33
9 A' 1215 1106 12.95 13.32 0.28 0.44
10 A' 1104 1004 3.15 1.57 0.13 0.23
11 A' 1038 945 57.95 4.20 0.16 0.27
12 A' 1007 917 8.80 3.63 0.75 0.85
13 A' 997 907 0.83 1.79 0.60 0.75
14 A" 1050 955 4.22 1.68 0.75 0.86
15 A" 1031 939 0.06 0.63 0.75 0.86
16 A" 870 792 63.44 0.11 0.75 0.86
17 A" 704 641 3.20 0.20 0.75 0.86
18 A" 648 589 18.54 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13733.2 cm-1
Scaled (by 0.9101) Zero Point Vibrational Energy (zpe) 12498.6 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/cc-pVTZ
ABC
0.34056 0.32964 0.16751

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.114 0.368 0.000
C2 0.594 -0.960 0.000
C3 0.000 1.107 0.000
N4 -0.684 -0.964 0.000
O5 -1.068 0.337 0.000
H6 2.130 0.691 0.000
H7 1.124 -1.889 0.000
H8 -0.171 2.161 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42691.33672.23752.18261.06562.25732.2057
C21.42692.15041.27712.10802.25541.06953.2133
C31.33672.15042.18041.31652.17013.19951.0679
N42.23751.27712.18041.35653.26402.03023.1664
O52.18262.10801.31651.35653.21753.12402.0325
H61.06562.25542.17013.26403.21752.76932.7302
H72.25731.06953.19952.03023.12402.76934.2517
H82.20573.21331.06793.16642.03252.73024.2517

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.569 C1 C2 H7 128.883
C1 C3 O5 110.694 C1 C3 H8 132.742
C2 C1 C3 102.126 C2 C1 H6 129.035
C2 N4 O5 106.306 C3 C1 H6 128.839
C3 O5 N4 109.305 N4 C2 H7 119.548
O5 C3 H8 116.564
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.294      
2 C -0.076      
3 C 0.043      
4 N -0.070      
5 O -0.164      
6 H 0.189      
7 H 0.181      
8 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.725 1.523 0.000 3.122
CHELPG        
AIM -3.388 0.116 0.000 3.390
ESP 2.670 1.511 0.000 3.068


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.689 -2.829 0.000
y -2.829 -24.767 0.000
z 0.000 0.000 -30.222
Traceless
 xyz
x -1.195 -2.829 0.000
y -2.829 4.689 0.000
z 0.000 0.000 -3.494
Polar
3z2-r2-6.989
x2-y2-3.923
xy-2.829
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.253 -0.307 0.000
y -0.307 6.571 0.000
z 0.000 0.000 3.530


<r2> (average value of r2) Å2
<r2> 75.031
(<r2>)1/2 8.662