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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: mPW1PW91/6-31+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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-245.986816
Energy at 298.15K 
HF Energy-245.986816
Nuclear repulsion energy162.636994
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 mPW1PW91/6-31+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' 3331 3171 0.30 125.52 0.11 0.20
2 A' 3309 3149 0.35 49.39 0.72 0.84
3 A' 3289 3130 0.62 91.83 0.40 0.57
4 A' 1630 1552 11.08 2.52 0.04 0.08
5 A' 1500 1428 34.74 40.04 0.22 0.37
6 A' 1424 1355 6.03 3.60 0.11 0.20
7 A' 1267 1206 8.16 14.80 0.12 0.22
8 A' 1179 1122 18.15 1.84 0.45 0.62
9 A' 1146 1091 9.67 14.09 0.10 0.19
10 A' 1059 1008 5.25 2.65 0.58 0.74
11 A' 952 906 35.72 4.97 0.17 0.29
12 A' 932 887 6.10 2.91 0.50 0.67
13 A' 927 882 2.15 2.33 0.69 0.82
14 A" 918 874 7.11 0.57 0.75 0.86
15 A" 881 838 0.02 0.63 0.75 0.86
16 A" 788 750 72.00 0.03 0.75 0.86
17 A" 655 623 1.15 0.37 0.75 0.86
18 A" 610 581 15.22 0.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12897.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 12275.7 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 mPW1PW91/6-31+G**
ABC
0.32991 0.32314 0.16325

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 0.364 0.000
C2 0.613 -0.960 0.000
C3 0.000 1.123 0.000
N4 -0.695 -0.981 0.000
O5 -1.085 0.341 0.000
H6 2.153 0.691 0.000
H7 1.150 -1.898 0.000
H8 -0.184 2.186 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42001.35792.26482.21181.07772.26192.2442
C21.42002.17071.30822.13852.25781.08093.2450
C31.35792.17072.21621.33792.19623.23191.0790
N42.26481.30822.21621.37823.30322.06023.2083
O52.21182.13851.33791.37823.25753.16312.0537
H61.07772.25782.19623.30323.25752.77612.7748
H72.26191.08093.23192.06023.16312.77614.2959
H82.24423.24501.07903.20832.05372.77484.2959

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.160 C1 C2 H7 128.987
C1 C3 O5 110.252 C1 C3 H8 133.796
C2 C1 C3 102.755 C2 C1 H6 128.850
C2 N4 O5 105.484 C3 C1 H6 128.395
C3 O5 N4 109.348 N4 C2 H7 118.852
O5 C3 H8 115.952
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.010      
2 C -0.183      
3 C -0.129      
4 N -0.250      
5 O -0.008      
6 H 0.184      
7 H 0.187      
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
  2.700 1.601 0.000 3.139
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.681 -2.724 0.000
y -2.724 -25.035 0.000
z 0.000 0.000 -30.369
Traceless
 xyz
x -0.979 -2.724 0.000
y -2.724 4.490 0.000
z 0.000 0.000 -3.511
Polar
3z2-r2-7.022
x2-y2-3.646
xy-2.724
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.758 -0.104 0.000
y -0.104 7.263 0.000
z 0.000 0.000 3.980


<r2> (average value of r2) Å2
<r2> 76.582
(<r2>)1/2 8.751