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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: PBE1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-245.772763
Energy at 298.15K 
HF Energy-245.772763
Nuclear repulsion energy162.636037
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 PBE1PBE/6-31+G**
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' 3325 3177 0.44 124.68 0.11 0.21
2 A' 3302 3155 0.49 50.01 0.70 0.83
3 A' 3283 3136 0.50 92.00 0.40 0.57
4 A' 1630 1557 10.91 2.61 0.04 0.07
5 A' 1501 1434 34.65 39.93 0.22 0.36
6 A' 1423 1359 6.00 3.76 0.10 0.19
7 A' 1265 1209 8.41 15.09 0.12 0.21
8 A' 1179 1126 16.77 1.69 0.48 0.65
9 A' 1146 1095 9.80 14.27 0.10 0.18
10 A' 1057 1010 5.24 2.78 0.60 0.75
11 A' 956 913 37.61 5.11 0.15 0.27
12 A' 932 890 4.30 2.35 0.58 0.74
13 A' 925 884 2.42 2.51 0.70 0.82
14 A" 915 874 7.24 0.58 0.75 0.86
15 A" 878 838 0.03 0.58 0.75 0.86
16 A" 786 751 72.35 0.03 0.75 0.86
17 A" 655 626 0.97 0.39 0.75 0.86
18 A" 611 583 15.34 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12883.9 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 12308.0 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 PBE1PBE/6-31+G**
ABC
0.32981 0.32326 0.16325

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 0.364 0.000
C2 0.612 -0.960 0.000
C3 0.000 1.123 0.000
N4 -0.696 -0.980 0.000
O5 -1.085 0.340 0.000
H6 2.155 0.691 0.000
H7 1.149 -1.900 0.000
H8 -0.185 2.187 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42001.35862.26492.21211.07912.26352.2464
C21.42002.17061.30882.13802.25931.08243.2464
C31.35862.17062.21511.33792.19803.23341.0805
N42.26491.30882.21511.37643.30502.06183.2084
O52.21212.13801.33791.37643.25923.16362.0547
H61.07912.25932.19803.30503.25922.77892.7778
H72.26351.08243.23342.06183.16362.77894.2991
H82.24643.24641.08053.20842.05472.77784.2991

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.139 C1 C2 H7 129.023
C1 C3 O5 110.243 C1 C3 H8 133.824
C2 C1 C3 102.716 C2 C1 H6 128.885
C2 N4 O5 105.515 C3 C1 H6 128.399
C3 O5 N4 109.387 N4 C2 H7 118.838
O5 C3 H8 115.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.002      
2 C -0.173      
3 C -0.123      
4 N -0.252      
5 O -0.013      
6 H 0.184      
7 H 0.186      
8 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.675 1.601 0.000 3.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.715 -2.722 0.000
y -2.722 -25.098 0.000
z 0.000 0.000 -30.441
Traceless
 xyz
x -0.946 -2.722 0.000
y -2.722 4.479 0.000
z 0.000 0.000 -3.534
Polar
3z2-r2-7.068
x2-y2-3.617
xy-2.722
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.771 -0.099 0.000
y -0.099 7.282 0.000
z 0.000 0.000 3.999


<r2> (average value of r2) Å2
<r2> 76.626
(<r2>)1/2 8.754