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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B2PLYP/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 B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-245.852891
Energy at 298.15K 
HF Energy-245.566392
Nuclear repulsion energy162.150319
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 B2PLYP/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' 3323 3173 0.10 103.07 0.11 0.20
2 A' 3295 3147 0.06 50.68 0.61 0.75
3 A' 3279 3132 0.84 86.20 0.39 0.56
4 A' 1596 1524 7.29 1.99 0.08 0.14
5 A' 1462 1396 29.18 25.64 0.32 0.48
6 A' 1405 1342 6.75 1.78 0.14 0.25
7 A' 1250 1194 5.35 11.55 0.19 0.32
8 A' 1170 1117 18.93 3.56 0.62 0.76
9 A' 1132 1081 6.35 9.95 0.12 0.21
10 A' 1054 1007 5.62 4.02 0.65 0.79
11 A' 934 892 11.40 3.78 0.47 0.64
12 A' 920 878 0.69 1.58 0.55 0.71
13 A' 898 858 20.87 5.45 0.15 0.27
14 A" 915 874 4.42 1.61 0.75 0.86
15 A" 871 832 0.15 0.15 0.75 0.86
16 A" 797 761 45.36 0.92 0.75 0.86
17 A" 652 622 2.58 0.37 0.75 0.86
18 A" 613 585 11.70 0.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12782.3 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 12207.1 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 B2PLYP/6-31G(2df,p)
ABC
0.32760 0.32158 0.16228

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.127 0.366 0.000
C2 0.618 -0.959 0.000
C3 0.000 1.124 0.000
N4 -0.695 -0.990 0.000
O5 -1.091 0.344 0.000
H6 2.151 0.695 0.000
H7 1.159 -1.892 0.000
H8 -0.186 2.185 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41981.35832.27172.21901.07512.25892.2431
C21.41982.17261.31362.14962.25521.07893.2450
C31.35832.17262.22491.34142.19343.23131.0772
N42.27171.31362.22491.39153.30752.06243.2153
O52.21902.14961.34141.39153.26153.17292.0517
H61.07512.25522.19343.30753.26152.77102.7712
H72.25891.07893.23132.06243.17292.77104.2933
H82.24313.24501.07723.21532.05172.77124.2933

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.364 C1 C2 H7 128.872
C1 C3 O5 110.560 C1 C3 H8 133.817
C2 C1 C3 102.873 C2 C1 H6 128.833
C2 N4 O5 105.210 C3 C1 H6 128.294
C3 O5 N4 108.991 N4 C2 H7 118.764
O5 C3 H8 115.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 C 0.002      
3 C 0.074      
4 N -0.096      
5 O -0.184      
6 H 0.144      
7 H 0.149      
8 H 0.165      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.458 1.493 0.000 2.876
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.042 -2.488 -0.003
y -2.488 -24.811 0.000
z -0.003 0.000 -29.487
Traceless
 xyz
x -0.893 -2.488 -0.003
y -2.488 3.953 0.000
z -0.003 0.000 -3.061
Polar
3z2-r2-6.121
x2-y2-3.230
xy-2.488
xz-0.003
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.101 -0.222 0.000
y -0.222 6.790 0.000
z 0.000 0.000 2.915


<r2> (average value of r2) Å2
<r2> 76.523
(<r2>)1/2 8.748