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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3PW91/6-31G(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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-245.958949
Energy at 298.15K 
HF Energy-245.958949
Nuclear repulsion energy162.721121
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 B3PW91/6-31G(2df,p)
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' 3303 3175 0.08 103.59 0.11 0.20
2 A' 3274 3147 0.01 53.32 0.59 0.74
3 A' 3256 3131 1.27 87.55 0.39 0.56
4 A' 1613 1550 8.16 1.24 0.11 0.20
5 A' 1478 1421 29.51 27.47 0.28 0.44
6 A' 1409 1355 7.46 1.75 0.24 0.38
7 A' 1254 1206 6.79 12.21 0.20 0.33
8 A' 1171 1126 16.50 2.77 0.66 0.80
9 A' 1138 1094 7.95 10.38 0.14 0.24
10 A' 1051 1011 5.21 4.24 0.63 0.78
11 A' 943 906 26.56 4.68 0.12 0.21
12 A' 928 892 5.64 3.47 0.59 0.74
13 A' 923 887 5.48 1.18 0.73 0.84
14 A" 918 882 4.47 1.57 0.75 0.86
15 A" 876 842 0.06 0.19 0.75 0.86
16 A" 794 763 47.01 0.88 0.75 0.86
17 A" 658 632 2.02 0.45 0.75 0.86
18 A" 615 591 12.71 0.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12799.5 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 12305.4 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 B3PW91/6-31G(2df,p)
ABC
0.32987 0.32388 0.16343

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 0.364 0.000
C2 0.613 -0.959 0.000
C3 0.000 1.120 0.000
N4 -0.696 -0.980 0.000
O5 -1.086 0.341 0.000
H6 2.153 0.692 0.000
H7 1.151 -1.896 0.000
H8 -0.185 2.184 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41891.35662.26452.21211.07752.26062.2431
C21.41892.16701.30862.13862.25771.08153.2421
C31.35662.16702.21271.33592.19473.22871.0798
N42.26451.30862.21271.37803.30332.06173.2052
O52.21212.13861.33591.37803.25713.16402.0508
H61.07752.25772.19473.30333.25712.77572.7729
H72.26061.08153.22872.06173.16402.77574.2935
H82.24313.24211.07983.20522.05082.77294.2935

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.182 C1 C2 H7 128.903
C1 C3 O5 110.480 C1 C3 H8 133.733
C2 C1 C3 102.639 C2 C1 H6 128.969
C2 N4 O5 105.474 C3 C1 H6 128.392
C3 O5 N4 109.224 N4 C2 H7 118.915
O5 C3 H8 115.787
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.288      
2 C 0.021      
3 C 0.075      
4 N -0.124      
5 O -0.175      
6 H 0.154      
7 H 0.161      
8 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.417 1.500 0.000 2.845
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.723 -2.496 0.000
y -2.496 -24.502 0.000
z 0.000 0.000 -29.295
Traceless
 xyz
x -0.825 -2.496 0.000
y -2.496 4.007 0.000
z 0.000 0.000 -3.183
Polar
3z2-r2-6.366
x2-y2-3.221
xy-2.496
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.122 -0.213 0.000
y -0.213 6.812 0.000
z 0.000 0.000 2.955


<r2> (average value of r2) Å2
<r2> 75.986
(<r2>)1/2 8.717