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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: mPW1PW91/6-31G(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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-245.992412
Energy at 298.15K 
HF Energy-245.992412
Nuclear repulsion energy163.089117
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 mPW1PW91/6-31G(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' 3322 3172 0.13 101.07 0.11 0.20
2 A' 3293 3144 0.02 51.66 0.58 0.74
3 A' 3276 3127 1.15 86.30 0.39 0.56
4 A' 1628 1555 8.51 1.10 0.13 0.23
5 A' 1492 1425 30.51 28.12 0.27 0.43
6 A' 1421 1357 8.17 1.68 0.28 0.44
7 A' 1266 1208 7.46 12.05 0.20 0.33
8 A' 1183 1130 15.50 2.52 0.64 0.78
9 A' 1147 1095 8.44 10.53 0.15 0.26
10 A' 1058 1010 4.54 4.14 0.62 0.76
11 A' 960 917 31.45 4.94 0.11 0.20
12 A' 936 894 5.03 2.37 0.73 0.84
13 A' 929 887 3.69 1.81 0.75 0.86
14 A" 927 885 4.44 1.52 0.75 0.86
15 A" 887 847 0.07 0.18 0.75 0.86
16 A" 800 764 47.33 0.80 0.75 0.86
17 A" 664 633 1.89 0.45 0.75 0.86
18 A" 619 591 13.16 0.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12904.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 12319.4 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 mPW1PW91/6-31G(2df,p)
ABC
0.33136 0.32531 0.16415

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.363 0.000
C2 0.611 -0.958 0.000
C3 0.000 1.117 0.000
N4 -0.695 -0.976 0.000
O5 -1.082 0.340 0.000
H6 2.150 0.691 0.000
H7 1.147 -1.895 0.000
H8 -0.185 2.180 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41761.35442.26002.20751.07592.25842.2394
C21.41762.16301.30572.13312.25551.07993.2366
C31.35442.16302.20631.33272.19173.22341.0783
N42.26001.30572.20631.37243.29752.05823.1973
O52.20752.13311.33271.37243.25123.15672.0471
H61.07592.25552.19173.29753.25122.77372.7688
H72.25841.07993.22342.05823.15672.77374.2868
H82.23943.23661.07833.19732.04712.76884.2868

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.107 C1 C2 H7 128.947
C1 C3 O5 110.478 C1 C3 H8 133.697
C2 C1 C3 102.558 C2 C1 H6 129.011
C2 N4 O5 105.567 C3 C1 H6 128.431
C3 O5 N4 109.290 N4 C2 H7 118.946
O5 C3 H8 115.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.293      
2 C 0.019      
3 C 0.079      
4 N -0.119      
5 O -0.186      
6 H 0.157      
7 H 0.164      
8 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.425 1.504 0.000 2.853
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.698 -2.504 0.000
y -2.504 -24.455 0.000
z 0.000 0.000 -29.307
Traceless
 xyz
x -0.817 -2.504 0.000
y -2.504 4.047 0.000
z 0.000 0.000 -3.230
Polar
3z2-r2-6.461
x2-y2-3.243
xy-2.504
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.083 -0.214 0.000
y -0.214 6.746 0.000
z 0.000 0.000 2.952


<r2> (average value of r2) Å2
<r2> 75.721
(<r2>)1/2 8.702