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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-246.034714
Energy at 298.15K 
HF Energy-246.034714
Nuclear repulsion energy161.749256
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 B3LYPultrafine/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' 3306 3167 0.16 112.42 0.10 0.18
2 A' 3284 3146 0.14 53.85 0.70 0.83
3 A' 3261 3124 2.41 90.16 0.39 0.56
4 A' 1618 1550 8.60 1.41 0.10 0.18
5 A' 1478 1416 31.26 29.29 0.35 0.51
6 A' 1415 1356 5.72 1.93 0.20 0.34
7 A' 1259 1206 6.24 11.12 0.26 0.41
8 A' 1164 1116 19.03 4.42 0.59 0.74
9 A' 1134 1086 8.12 8.90 0.16 0.28
10 A' 1054 1009 5.20 4.24 0.65 0.79
11 A' 933 894 10.20 4.04 0.59 0.74
12 A' 919 881 1.12 1.53 0.58 0.74
13 A' 888 850 25.72 5.73 0.17 0.30
14 A" 905 867 4.38 2.64 0.75 0.86
15 A" 864 828 0.00 0.31 0.75 0.86
16 A" 784 751 46.15 1.53 0.75 0.86
17 A" 646 619 2.74 0.38 0.75 0.86
18 A" 606 581 12.91 1.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12758.7 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 12222.9 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 B3LYPultrafine/6-31G*
ABC
0.32681 0.31925 0.16149

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.369 0.000
C2 0.618 -0.961 0.000
C3 0.000 1.128 0.000
N4 -0.694 -0.996 0.000
O5 -1.094 0.345 0.000
H6 2.157 0.695 0.000
H7 1.165 -1.895 0.000
H8 -0.184 2.193 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42411.35982.27652.22221.07932.26422.2472
C21.42412.17801.31232.15272.26061.08293.2539
C31.35982.17802.23421.34532.20003.23971.0807
N42.27651.31232.23421.39903.31462.06513.2289
O52.22222.15271.34531.39903.26973.18122.0595
H61.07932.26062.20003.31463.26972.77362.7796
H72.26421.08293.23972.06513.18122.77364.3049
H82.24723.25391.08073.22892.05952.77964.3049

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.535 C1 C2 H7 128.649
C1 C3 O5 110.471 C1 C3 H8 133.768
C2 C1 C3 102.931 C2 C1 H6 128.595
C2 N4 O5 105.078 C3 C1 H6 128.473
C3 O5 N4 108.984 N4 C2 H7 118.816
O5 C3 H8 115.760
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.234      
2 C 0.056      
3 C 0.148      
4 N -0.158      
5 O -0.316      
6 H 0.157      
7 H 0.169      
8 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.565 1.504 0.000 2.973
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.176 -2.467 0.000
y -2.467 -24.684 0.000
z 0.000 0.000 -29.488
Traceless
 xyz
x -1.089 -2.467 0.000
y -2.467 4.148 0.000
z 0.000 0.000 -3.058
Polar
3z2-r2-6.117
x2-y2-3.491
xy-2.467
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.971 -0.245 0.000
y -0.245 6.626 0.000
z 0.000 0.000 2.427


<r2> (average value of r2) Å2
<r2> 76.820
(<r2>)1/2 8.765