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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B2PLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-245.813833
Energy at 298.15K 
HF Energy-245.560402
Nuclear repulsion energy161.457283
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/6-31+G**
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 3175 0.12 131.89 0.11 0.21
2 A' 3313 3155 0.32 49.58 0.75 0.85
3 A' 3294 3137 0.60 92.18 0.41 0.58
4 A' 1601 1524 10.03 4.54 0.00 0.01
5 A' 1475 1404 33.88 36.52 0.27 0.43
6 A' 1410 1343 4.13 4.96 0.04 0.07
7 A' 1253 1193 6.25 14.72 0.09 0.17
8 A' 1163 1108 22.09 4.35 0.32 0.49
9 A' 1130 1076 7.54 12.86 0.07 0.13
10 A' 1057 1007 7.25 2.57 0.64 0.78
11 A' 931 887 9.45 3.79 0.64 0.78
12 A' 913 870 0.82 1.21 0.54 0.70
13 A' 872 831 25.60 7.65 0.15 0.26
14 A" 890 848 9.04 0.32 0.75 0.86
15 A" 850 810 0.36 0.81 0.75 0.86
16 A" 775 739 68.67 0.07 0.75 0.86
17 A" 636 605 1.72 0.27 0.75 0.86
18 A" 595 566 14.38 0.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12745.0 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 12138.4 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/6-31+G**
ABC
0.32540 0.31829 0.16090

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.128 0.368 0.000
C2 0.622 -0.961 0.000
C3 0.000 1.131 0.000
N4 -0.694 -0.999 0.000
O5 -1.097 0.346 0.000
H6 2.154 0.696 0.000
H7 1.166 -1.894 0.000
H8 -0.184 2.193 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42261.36232.27812.22581.07672.26252.2481
C21.42262.18331.31702.16012.25661.07973.2561
C31.36232.18332.24031.34942.19753.24241.0777
N42.27811.31702.24031.40373.31412.06473.2324
O52.22582.16011.34941.40373.27003.18452.0606
H61.07672.25662.19753.31413.27002.77182.7765
H72.26251.07973.24242.06473.18452.77184.3046
H82.24813.25611.07773.23242.06062.77654.3046

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.459 C1 C2 H7 128.911
C1 C3 O5 110.332 C1 C3 H8 133.914
C2 C1 C3 103.236 C2 C1 H6 128.559
C2 N4 O5 105.069 C3 C1 H6 128.205
C3 O5 N4 108.905 N4 C2 H7 118.630
O5 C3 H8 115.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.052      
2 C -0.093      
3 C -0.042      
4 N -0.251      
5 O -0.064      
6 H 0.164      
7 H 0.168      
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
  2.774 1.588 0.000 3.197
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.219 -2.733 -0.006
y -2.733 -25.520 -0.000
z -0.006 -0.000 -30.745
Traceless
 xyz
x -1.086 -2.733 -0.006
y -2.733 4.462 -0.000
z -0.006 -0.000 -3.376
Polar
3z2-r2-6.752
x2-y2-3.699
xy-2.733
xz-0.006
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.874 -0.103 0.002
y -0.103 7.406 0.001
z 0.002 0.001 4.084


<r2> (average value of r2) Å2
<r2> 77.658
(<r2>)1/2 8.812