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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: HF/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-43.395049
Energy at 298.15K 
HF Energy-43.395049
Nuclear repulsion energy83.436874
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/CEP-121G
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' 3469 3165 0.21 116.08 0.12 0.21
2 A' 3441 3140 0.10 27.81 0.67 0.81
3 A' 3428 3128 2.42 85.09 0.49 0.66
4 A' 1717 1567 15.43 2.32 0.63 0.77
5 A' 1566 1429 51.26 56.20 0.24 0.39
6 A' 1490 1360 8.48 3.74 0.28 0.43
7 A' 1350 1232 12.68 10.49 0.30 0.46
8 A' 1240 1132 22.55 12.00 0.30 0.46
9 A' 1153 1052 20.85 10.73 0.38 0.55
10 A' 1115 1018 4.91 2.84 0.08 0.15
11 A' 1010 922 17.31 6.59 0.61 0.76
12 A' 980 894 8.55 0.68 0.73 0.85
13 A' 952 869 44.07 11.70 0.25 0.40
14 A" 1038 947 2.05 4.39 0.75 0.86
15 A" 1020 930 2.29 0.90 0.75 0.86
16 A" 887 809 100.15 0.33 0.75 0.86
17 A" 681 621 6.69 0.04 0.75 0.86
18 A" 623 569 15.12 1.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13579.1 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 12391.0 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/CEP-121G
ABC
0.32757 0.31200 0.15980

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.123 0.383 0.000
C2 0.621 -0.973 0.000
C3 0.000 1.145 0.000
N4 -0.687 -1.010 0.000
O5 -1.098 0.341 0.000
H6 2.141 0.700 0.000
H7 1.172 -1.889 0.000
H8 -0.177 2.197 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.44661.35682.28412.22181.06602.27262.2314
C21.44662.20701.30822.16392.26061.06873.2691
C31.35682.20702.26151.36092.18663.25201.0672
N42.28411.30822.26151.41233.30462.05613.2475
O52.22182.16391.36091.41233.25913.18222.0723
H61.06602.26062.18663.30463.25912.76412.7592
H72.27261.06873.25202.05613.18222.76414.3027
H82.23143.26911.06723.24752.07232.75924.3027

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 111.928 C1 C2 H7 128.632
C1 C3 O5 109.673 C1 C3 H8 133.664
C2 C1 C3 103.816 C2 C1 H6 127.597
C2 N4 O5 105.326 C3 C1 H6 128.587
C3 O5 N4 109.257 N4 C2 H7 119.439
O5 C3 H8 116.663
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.103      
2 C -0.302      
3 C -0.078      
4 N 0.100      
5 O -0.299      
6 H 0.233      
7 H 0.219      
8 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.653 1.649 0.000 4.008
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.519 -3.048 0.000
y -3.048 -25.022 0.000
z 0.000 0.000 -30.823
Traceless
 xyz
x -2.596 -3.048 0.000
y -3.048 5.649 0.000
z 0.000 0.000 -3.052
Polar
3z2-r2-6.105
x2-y2-5.497
xy-3.048
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.190 -0.416 0.000
y -0.416 6.468 0.000
z 0.000 0.000 3.068


<r2> (average value of r2) Å2
<r2> 64.453
(<r2>)1/2 8.028