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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-245.994661
Energy at 298.15K 
HF Energy-245.994661
Nuclear repulsion energy162.641614
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 B3PW91/6-311G*
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' 3293 3170 0.31      
2 A' 3270 3148 0.16      
3 A' 3248 3127 2.32      
4 A' 1615 1554 9.48      
5 A' 1481 1426 32.47      
6 A' 1413 1360 5.94      
7 A' 1256 1209 7.50      
8 A' 1162 1119 22.94      
9 A' 1135 1093 9.21      
10 A' 1051 1012 6.50      
11 A' 939 904 14.97      
12 A' 925 891 0.11      
13 A' 914 880 24.35      
14 A" 901 868 6.42      
15 A" 868 836 0.33      
16 A" 783 754 63.71      
17 A" 654 630 1.75      
18 A" 613 590 16.14      

Unscaled Zero Point Vibrational Energy (zpe) 12761.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 12285.2 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 B3PW91/6-311G*
ABC
0.32999 0.32317 0.16327

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.125 0.365 0.000
C2 0.613 -0.959 0.000
C3 0.000 1.122 0.000
N4 -0.694 -0.983 0.000
O5 -1.086 0.342 0.000
H6 2.153 0.692 0.000
H7 1.150 -1.897 0.000
H8 -0.187 2.185 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.41961.35592.26432.21171.07832.26272.2434
C21.41962.16831.30642.13942.25751.08183.2435
C31.35592.16832.21631.33702.19543.23051.0797
N42.26431.30642.21631.38233.30292.05783.2086
O52.21172.13941.33701.38233.25803.16472.0507
H61.07832.25752.19543.30293.25802.77662.7756
H72.26271.08183.23052.05783.16472.77664.2956
H82.24343.24351.07973.20862.05072.77564.2956

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.269 C1 C2 H7 129.028
C1 C3 O5 110.429 C1 C3 H8 133.867
C2 C1 C3 102.729 C2 C1 H6 128.809
C2 N4 O5 105.408 C3 C1 H6 128.463
C3 O5 N4 109.165 N4 C2 H7 118.703
O5 C3 H8 115.704
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.438      
2 C -0.004      
3 C 0.073      
4 N -0.143      
5 O -0.189      
6 H 0.221      
7 H 0.235      
8 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.578 1.533 0.000 2.999
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.333 -2.596 0.000
y -2.596 -24.694 0.000
z 0.000 0.000 -30.031
Traceless
 xyz
x -0.971 -2.596 0.000
y -2.596 4.489 0.000
z 0.000 0.000 -3.517
Polar
3z2-r2-7.035
x2-y2-3.640
xy-2.596
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.149 -0.218 0.000
y -0.218 6.782 0.000
z 0.000 0.000 2.955


<r2> (average value of r2) Å2
<r2> 76.358
(<r2>)1/2 8.738