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

using model chemistry: wB97X-D/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at wB97X-D/6-31G*
 hartrees
Energy at 0K-285.263671
Energy at 298.15K-285.269947
HF Energy-285.263671
Nuclear repulsion energy 
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 wB97X-D/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 3320 3149 0.03      
2 A 3297 3127 4.48      
3 A 3189 3025 7.98      
4 A 3156 2994 7.27      
5 A 3086 2927 12.14      
6 A 1687 1601 36.39      
7 A 1569 1488 48.33      
8 A 1525 1447 8.67      
9 A 1506 1428 8.85      
10 A 1450 1375 1.30      
11 A 1409 1337 8.76      
12 A 1304 1237 23.91      
13 A 1241 1177 9.82      
14 A 1086 1030 4.81      
15 A 1076 1021 2.17      
16 A 1048 994 13.37      
17 A 1034 981 0.62      
18 A 972 922 9.23      
19 A 944 895 14.95      
20 A 909 863 3.99      
21 A 799 758 37.18      
22 A 673 638 0.46      
23 A 657 623 2.23      
24 A 653 620 1.32      
25 A 339 321 2.28      
26 A 251 238 2.34      
27 A 17 16 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 19098.7 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 18115.1 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 wB97X-D/6-31G*
ABC
0.31062 0.11947 0.08770

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.102 0.011 0.000
H2 2.453 -0.529 -0.885
H3 2.548 1.009 -0.000
H4 2.453 -0.528 0.885
C5 0.619 0.113 -0.000
O6 -0.067 -1.043 0.000
N7 -1.430 -0.789 -0.000
C8 -1.525 0.516 0.000
H9 -2.509 0.964 0.000
C10 -0.258 1.150 -0.000
H11 -0.034 2.206 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09431.09211.09431.48722.41183.62173.66194.70902.62053.0628
H21.09431.77631.76972.13532.71943.99074.20665.25683.30913.8011
H31.09211.77631.77632.12663.32334.36474.10195.05712.80882.8458
H41.09431.76971.77632.13532.71983.99094.20655.25673.30893.8007
C51.48722.13532.12662.13531.34422.23832.18083.24151.35792.1923
O62.41182.71943.32332.71981.34421.38672.13463.16132.20203.2494
N73.62173.99074.36473.99092.23831.38671.30812.05812.26603.3040
C83.66194.20664.10194.20652.18082.13461.30811.08171.41702.2535
H94.70905.25685.05715.25673.24153.16132.05811.08172.25952.7696
C102.62053.30912.80883.30891.35792.20202.26601.41702.25951.0790
H113.06283.80112.84583.80072.19233.24943.30402.25352.76961.0790

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 116.730 C1 C5 C10 134.116
H2 C1 H3 108.667 H2 C1 H4 107.918
H2 C1 C5 110.693 H3 C1 H4 108.667
H3 C1 C5 110.132 H4 C1 C5 110.694
C5 O6 N7 110.080 C5 C10 C8 103.588
C5 C10 H11 127.851 O6 C5 C10 109.155
O6 N7 C8 104.729 N7 C8 H9 118.599
N7 C8 C10 112.448 C8 C10 H11 128.561
H9 C8 C10 128.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.576      
2 H 0.207      
3 H 0.193      
4 H 0.207      
5 C 0.405      
6 O -0.364      
7 N -0.156      
8 C 0.019      
9 H 0.199      
10 C -0.322      
11 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.923 2.617 0.000 3.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.759 -3.620 -0.000
y -3.620 -34.975 -0.000
z -0.000 -0.000 -35.538
Traceless
 xyz
x 4.497 -3.620 -0.000
y -3.620 -1.826 -0.000
z -0.000 -0.000 -2.671
Polar
3z2-r2-5.342
x2-y24.216
xy-3.620
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.078 -0.410 0.000
y -0.410 7.153 0.000
z 0.000 0.000 3.868


<r2> (average value of r2) Å2
<r2> 134.928
(<r2>)1/2 11.616