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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-245.978227
Energy at 298.15K 
HF Energy-245.978227
Nuclear repulsion energy162.728744
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**
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' 3333 3171 0.19 107.87 0.10 0.18
2 A' 3308 3148 0.03 52.54 0.65 0.79
3 A' 3287 3128 1.40 88.28 0.38 0.55
4 A' 1640 1561 8.71 1.24 0.12 0.22
5 A' 1505 1432 32.53 29.30 0.33 0.50
6 A' 1431 1361 6.23 1.99 0.24 0.38
7 A' 1271 1210 7.72 11.45 0.25 0.39
8 A' 1185 1127 15.62 2.57 0.67 0.80
9 A' 1152 1096 8.52 10.44 0.19 0.32
10 A' 1063 1011 4.49 4.52 0.65 0.79
11 A' 957 910 33.99 5.48 0.14 0.25
12 A' 935 889 5.00 2.61 0.69 0.82
13 A' 929 884 3.72 2.38 0.74 0.85
14 A" 919 874 5.14 2.21 0.75 0.86
15 A" 883 840 0.05 0.38 0.75 0.86
16 A" 794 756 53.00 1.28 0.75 0.86
17 A" 659 627 1.64 0.49 0.75 0.86
18 A" 616 587 14.66 1.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12932.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 12305.6 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**
ABC
0.33029 0.32353 0.16344

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 0.365 0.000
C2 0.612 -0.958 0.000
C3 0.000 1.121 0.000
N4 -0.695 -0.981 0.000
O5 -1.085 0.340 0.000
H6 2.152 0.691 0.000
H7 1.152 -1.894 0.000
H8 -0.184 2.185 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41871.35652.26482.21111.07722.25932.2420
C21.41872.16751.30802.13672.25621.08093.2416
C31.35652.16752.21491.33732.19513.22831.0789
N42.26481.30802.21491.37763.30262.06063.2071
O52.21112.13671.33731.37763.25663.16172.0532
H61.07722.25622.19513.30263.25662.77222.7729
H72.25931.08093.22832.06063.16172.77224.2920
H82.24203.24161.07893.20712.05322.77294.2920

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.255 C1 C2 H7 128.836
C1 C3 O5 110.328 C1 C3 H8 133.710
C2 C1 C3 102.687 C2 C1 H6 128.847
C2 N4 O5 105.397 C3 C1 H6 128.466
C3 O5 N4 109.332 N4 C2 H7 118.909
O5 C3 H8 115.961
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.254      
2 C 0.079      
3 C 0.181      
4 N -0.162      
5 O -0.326      
6 H 0.151      
7 H 0.162      
8 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.549 1.531 0.000 2.973
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.964 -2.501 0.000
y -2.501 -24.428 0.000
z 0.000 0.000 -29.513
Traceless
 xyz
x -0.994 -2.501 0.000
y -2.501 4.310 0.000
z 0.000 0.000 -3.316
Polar
3z2-r2-6.633
x2-y2-3.536
xy-2.501
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.951 -0.237 0.000
y -0.237 6.567 0.000
z 0.000 0.000 2.478


<r2> (average value of r2) Å2
<r2> 76.059
(<r2>)1/2 8.721