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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: HF/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 HF/6-31G**
 hartrees
Energy at 0K-283.640649
Energy at 298.15K-283.647439
Nuclear repulsion energy225.875526
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 HF/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 3457 3121 2.18      
2 A 3434 3099 0.28      
3 A 3299 2978 10.92      
4 A 3258 2940 21.88      
5 A 3198 2886 19.80      
6 A 1825 1647 38.12      
7 A 1660 1498 21.77      
8 A 1615 1458 10.22      
9 A 1609 1453 6.80      
10 A 1584 1430 59.99      
11 A 1541 1391 5.34      
12 A 1408 1271 6.41      
13 A 1276 1151 20.94      
14 A 1195 1078 6.86      
15 A 1165 1052 2.63      
16 A 1132 1022 3.30      
17 A 1060 957 44.89      
18 A 1053 950 4.12      
19 A 1038 937 0.46      
20 A 997 900 11.14      
21 A 880 794 46.17      
22 A 729 658 1.44      
23 A 704 636 8.74      
24 A 652 588 8.55      
25 A 362 326 7.44      
26 A 300 271 4.83      
27 A 138 125 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 20284.3 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 18308.6 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 HF/6-31G**
ABC
0.31399 0.11943 0.08792

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.121 0.030 0.000
H2 -2.497 0.546 -0.877
H3 -2.500 -0.983 0.000
H4 -2.497 0.546 0.877
C5 1.473 0.555 0.000
O6 1.352 -0.759 0.000
N7 0.028 -1.087 -0.000
C8 -0.625 0.018 -0.000
C9 0.269 1.139 -0.000
H10 0.030 2.181 -0.000
H11 2.471 0.942 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08491.08161.08493.63223.56162.42151.49592.63473.04214.6813
H21.08491.76281.75414.06584.15803.13212.13352.96153.13495.0600
H31.08161.76281.76284.26063.85892.52992.12563.48874.05135.3306
H41.08491.75411.76284.06574.15793.13202.13342.96163.13515.0599
C53.63224.06584.26064.06571.31962.18772.16581.33822.17361.0700
O63.56164.15803.85894.15791.31961.36472.12462.18533.22332.0358
N72.42153.13212.52993.13202.18771.36471.28352.23913.26793.1758
C81.49592.13352.12562.13342.16582.12461.28351.43382.25983.2307
C92.63472.96153.48872.96161.33822.18532.23911.43381.06892.2105
H103.04213.13494.05133.13512.17363.22333.26792.25981.06892.7368
H114.68135.06005.33065.05991.07002.03583.17583.23072.21052.7368

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 121.018 C1 C8 C9 128.127
H2 C1 H3 108.911 H2 C1 H4 107.881
H2 C1 C8 110.505 H3 C1 H4 108.910
H3 C1 C8 110.074 H4 C1 C8 110.504
C5 O6 N7 109.168 C5 C9 C8 102.711
C5 C9 H10 128.770 O6 C5 C9 110.612
O6 C5 H11 116.454 O6 N7 C8 106.653
N7 C8 C9 110.856 C8 C9 H10 128.518
C9 C5 H11 132.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363 -0.261    
2 H 0.139 0.073    
3 H 0.161 0.083    
4 H 0.139 0.073    
5 C 0.268 0.229    
6 O -0.448 -0.131    
7 N -0.188 -0.459    
8 C 0.269 0.596    
9 C -0.330 -0.499    
10 H 0.171 0.187    
11 H 0.184 0.107    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.572 3.256 0.001 3.306
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.261 2.444 0.000
y 2.444 -36.680 -0.000
z 0.000 -0.000 -36.167
Traceless
 xyz
x 7.162 2.444 0.000
y 2.444 -3.966 -0.000
z 0.000 -0.000 -3.196
Polar
3z2-r2-6.393
x2-y27.418
xy2.444
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.464 -0.139 0.000
y -0.139 6.794 0.000
z 0.000 0.000 3.837


<r2> (average value of r2) Å2
<r2> 134.770
(<r2>)1/2 11.609