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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B2PLYP/6-31G*

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*
 hartrees
Energy at 0K-245.791057
Energy at 298.15K 
HF Energy-245.546275
Nuclear repulsion energy161.605051
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*
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' 3334 3164 0.06 112.86 0.10 0.18
2 A' 3313 3145 0.01 48.86 0.73 0.85
3 A' 3292 3125 1.64 88.37 0.40 0.57
4 A' 1614 1532 7.48 2.15 0.09 0.16
5 A' 1482 1407 31.81 26.65 0.38 0.55
6 A' 1420 1348 4.75 2.30 0.12 0.22
7 A' 1261 1197 5.53 10.52 0.23 0.38
8 A' 1173 1114 19.47 4.49 0.59 0.74
9 A' 1139 1082 6.32 8.79 0.14 0.25
10 A' 1064 1010 5.80 4.22 0.68 0.81
11 A' 934 886 9.63 4.35 0.55 0.71
12 A' 919 872 1.01 1.63 0.54 0.71
13 A' 884 839 23.88 6.44 0.17 0.29
14 A" 892 847 6.23 2.62 0.75 0.86
15 A" 852 809 0.14 0.16 0.75 0.86
16 A" 783 743 49.27 1.48 0.75 0.86
17 A" 643 611 2.09 0.39 0.75 0.86
18 A" 605 575 14.14 1.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12802.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12152.2 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*
ABC
0.32590 0.31904 0.16122

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.368 0.000
C2 0.621 -0.959 0.000
C3 0.000 1.129 0.000
N4 -0.694 -0.998 0.000
O5 -1.096 0.345 0.000
H6 2.155 0.695 0.000
H7 1.168 -1.892 0.000
H8 -0.186 2.192 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42111.36052.27772.22441.07792.26102.2477
C21.42112.17871.31622.15662.25621.08123.2529
C31.36052.17872.23741.34782.19833.23901.0791
N42.27771.31622.23741.40183.31472.06563.2301
O52.22442.15661.34781.40183.27023.18282.0591
H61.07792.25622.19833.31473.27022.76972.7786
H72.26101.08123.23902.06563.18282.76974.3026
H82.24773.25291.07913.23012.05912.77864.3026

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.575 C1 C2 H7 128.756
C1 C3 O5 110.440 C1 C3 H8 133.918
C2 C1 C3 103.099 C2 C1 H6 128.553
C2 N4 O5 104.979 C3 C1 H6 128.348
C3 O5 N4 108.907 N4 C2 H7 118.669
O5 C3 H8 115.642
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.256      
2 C 0.029      
3 C 0.134      
4 N -0.145      
5 O -0.320      
6 H 0.179      
7 H 0.186      
8 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.601 1.515 0.000 3.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.305 -2.485 -0.002
y -2.485 -24.782 0.000
z -0.002 0.000 -29.702
Traceless
 xyz
x -1.062 -2.485 -0.002
y -2.485 4.221 0.000
z -0.002 0.000 -3.159
Polar
3z2-r2-6.318
x2-y2-3.522
xy-2.485
xz-0.002
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.942 -0.244 0.000
y -0.244 6.581 0.000
z 0.000 0.000 2.410


<r2> (average value of r2) Å2
<r2> 76.994
(<r2>)1/2 8.775