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All results from a given calculation for C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-285.351301
Energy at 298.15K-285.357749
Nuclear repulsion energy224.868298
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/cc-pVTZ
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 3278 3152 0.27      
2 A 3238 3114 2.83      
3 A 3146 3025 6.37      
4 A 3106 2987 5.92      
5 A 3047 2930 12.23      
6 A 1648 1585 39.85      
7 A 1529 1470 47.44      
8 A 1482 1425 9.70      
9 A 1468 1412 8.02      
10 A 1408 1354 0.78      
11 A 1378 1325 7.73      
12 A 1271 1222 23.31      
13 A 1214 1168 9.09      
14 A 1061 1020 3.20      
15 A 1055 1015 3.76      
16 A 1027 988 10.50      
17 A 1006 968 1.45      
18 A 949 912 8.31      
19 A 917 882 16.18      
20 A 915 880 4.55      
21 A 806 775 39.37      
22 A 666 641 0.27      
23 A 656 631 1.12      
24 A 651 626 2.13      
25 A 337 324 2.15      
26 A 254 244 2.29      
27 A 101 97 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 18807.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 18084.9 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 B3PW91/cc-pVTZ
ABC
0.31178 0.11986 0.08799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.095 0.016 -0.000
H2 -2.450 -0.522 0.882
H3 -2.535 1.011 -0.001
H4 -2.450 -0.523 -0.881
C5 -0.618 0.109 -0.000
O6 0.065 -1.047 0.000
N7 1.425 -0.784 -0.000
C8 1.523 0.516 -0.000
H9 2.505 0.964 -0.000
C10 0.257 1.148 0.000
H11 0.032 2.200 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09191.08831.09181.48062.40723.61023.65274.69742.61063.0493
H21.09191.77081.76232.12932.71633.98324.20025.24833.30073.7881
H31.08831.77081.77092.11903.31584.34834.08835.04072.79552.8294
H41.09181.76231.77092.12922.71573.98274.20025.24843.30113.7888
C51.48062.12932.11902.12921.34232.22972.17903.23801.35802.1897
O62.40722.71633.31582.71571.34231.38542.13723.16232.20293.2469
N73.61023.98324.34833.98272.22971.38541.30382.05532.25783.2934
C83.65274.20024.08834.20022.17902.13721.30381.07991.41502.2492
H94.69745.24835.04075.24843.23803.16232.05531.07992.25582.7646
C102.61063.30072.79553.30111.35802.20292.25781.41502.25581.0760
H113.04933.78812.82943.78882.18973.24693.29342.24922.76461.0760

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 116.946 C1 C5 C10 133.720
H2 C1 H3 108.634 H2 C1 H4 107.614
H2 C1 C5 110.828 H3 C1 H4 108.638
H3 C1 C5 110.220 H4 C1 C5 110.823
C5 O6 N7 109.649 C5 C10 C8 103.571
C5 C10 H11 127.844 O6 C5 C10 109.334
O6 N7 C8 105.219 N7 C8 H9 118.848
N7 C8 C10 112.226 C8 C10 H11 128.585
H9 C8 C10 128.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.253      
2 H 0.110      
3 H 0.101      
4 H 0.110      
5 C 0.193      
6 O -0.110      
7 N -0.090      
8 C -0.047      
9 H 0.117      
10 C -0.257      
11 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.960 2.511 0.000 3.185
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.264 3.604 0.000
y 3.604 -35.296 0.000
z 0.000 0.000 -35.906
Traceless
 xyz
x 4.338 3.604 0.000
y 3.604 -1.711 0.000
z 0.000 0.000 -2.627
Polar
3z2-r2-5.253
x2-y24.032
xy3.604
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 134.777
(<r2>)1/2 11.609