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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-244.604735
Energy at 298.15K 
HF Energy-244.604735
Nuclear repulsion energy159.363003
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 mPW1PW91/3-21G*
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' 3355 3186 1.30 95.14 0.10 0.18
2 A' 3326 3158 0.88 53.93 0.64 0.78
3 A' 3304 3138 0.91 73.56 0.39 0.56
4 A' 1581 1502 10.08 4.01 0.12 0.22
5 A' 1428 1356 27.07 22.45 0.46 0.63
6 A' 1388 1318 3.88 6.06 0.17 0.29
7 A' 1240 1178 7.05 8.43 0.29 0.45
8 A' 1161 1102 17.54 8.25 0.58 0.73
9 A' 1093 1038 3.16 7.34 0.14 0.24
10 A' 1047 994 14.35 2.41 0.70 0.83
11 A' 952 904 3.25 5.22 0.64 0.78
12 A' 914 868 0.67 1.78 0.45 0.62
13 A' 835 793 16.89 7.12 0.15 0.27
14 A" 966 917 1.58 1.65 0.75 0.86
15 A" 921 875 4.76 1.41 0.75 0.86
16 A" 818 777 84.76 1.13 0.75 0.86
17 A" 646 613 10.99 0.12 0.75 0.86
18 A" 594 564 8.86 1.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12784.4 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 12140.0 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 mPW1PW91/3-21G*
ABC
0.31964 0.30752 0.15673

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.124 0.384 0.000
C2 0.638 -0.959 0.000
C3 0.000 1.146 0.000
N4 -0.682 -1.045 0.000
O5 -1.124 0.355 0.000
H6 2.147 0.709 0.000
H7 1.218 -1.866 0.000
H8 -0.165 2.208 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42761.35782.30252.24791.07372.25192.2339
C21.42762.19921.32242.19762.24911.07703.2673
C31.35782.19922.29491.37472.19093.24911.0751
N42.30251.32242.29491.46823.32842.06943.2944
O52.24792.19761.37471.46823.29013.22752.0871
H61.07372.24912.19093.32843.29012.73772.7556
H72.25191.07703.24912.06943.22752.73774.3029
H82.23393.26731.07513.29442.08712.75564.3029

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.649 C1 C2 H7 127.522
C1 C3 O5 110.703 C1 C3 H8 132.989
C2 C1 C3 104.258 C2 C1 H6 127.531
C2 N4 O5 103.783 C3 C1 H6 128.211
C3 O5 N4 107.608 N4 C2 H7 118.830
O5 C3 H8 116.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.390      
2 C 0.046      
3 C 0.143      
4 N -0.221      
5 O -0.367      
6 H 0.240      
7 H 0.273      
8 H 0.277      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.928 1.507 0.000 3.293
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.687 -2.570 0.000
y -2.570 -24.328 0.000
z 0.000 0.000 -30.315
Traceless
 xyz
x -1.365 -2.570 0.000
y -2.570 5.173 0.000
z 0.000 0.000 -3.808
Polar
3z2-r2-7.615
x2-y2-4.359
xy-2.570
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.528 -0.301 0.000
y -0.301 6.236 0.000
z 0.000 0.000 1.765


<r2> (average value of r2) Å2
<r2> 78.641
(<r2>)1/2 8.868