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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-283.631911
Energy at 298.15K-283.638687
HF Energy-283.631911
Nuclear repulsion energy225.859217
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 3478 3125 2.79      
2 A 3454 3103 0.28      
3 A 3315 2979 11.25      
4 A 3274 2941 22.09      
5 A 3217 2891 19.90      
6 A 1826 1641 37.30      
7 A 1661 1492 22.17      
8 A 1629 1464 5.01      
9 A 1626 1461 6.63      
10 A 1591 1430 58.06      
11 A 1554 1396 11.26      
12 A 1412 1269 6.48      
13 A 1278 1148 20.52      
14 A 1198 1077 6.99      
15 A 1174 1055 2.48      
16 A 1137 1021 3.09      
17 A 1061 953 39.45      
18 A 1056 948 9.75      
19 A 1037 932 0.42      
20 A 997 896 11.15      
21 A 879 790 46.89      
22 A 730 656 1.59      
23 A 705 633 8.85      
24 A 652 586 8.70      
25 A 361 324 7.26      
26 A 300 269 4.76      
27 A 138 124 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 20368.7 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 18301.3 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
0.31402 0.11938 0.08789

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 2.498 0.545 0.877
H3 2.501 -0.983 0.000
H4 2.498 0.545 -0.877
C5 -1.473 0.555 0.000
O6 -1.353 -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 0.940 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.08481.08151.08483.63273.56232.42211.49652.63533.04194.6818
H21.08481.76211.75364.06704.15923.13302.13452.96303.13575.0614
H31.08151.76211.76214.26163.86022.53122.12653.48964.05135.3310
H41.08481.75361.76214.06714.15923.13282.13452.96293.13565.0616
C53.63274.06704.26164.06711.31962.18772.16581.33822.17401.0694
O63.56234.15923.86024.15921.31961.36482.12462.18543.22362.0337
N72.42213.13302.53123.13282.18771.36481.28352.23923.26783.1744
C81.49652.13452.12652.13452.16582.12461.28351.43392.25963.2303
C92.63532.96303.48962.96291.33822.18542.23921.43391.06892.2111
H103.04193.13574.05133.13562.17403.22363.26782.25961.06892.7390
H114.68185.06145.33105.06161.06942.03373.17443.23032.21112.7390

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 121.017 C1 C8 C9 128.125
H2 C1 H3 108.857 H2 C1 H4 107.847
H2 C1 C8 110.556 H3 C1 H4 108.856
H3 C1 C8 110.112 H4 C1 C8 110.553
C5 O6 N7 109.159 C5 C9 C8 102.702
C5 C9 H10 128.822 O6 C5 C9 110.626
O6 C5 H11 116.308 O6 N7 C8 106.654
N7 C8 C9 110.858 C8 C9 H10 128.476
C9 C5 H11 133.066
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 -0.527      
2 H 0.187      
3 H 0.210      
4 H 0.187      
5 C 0.209      
6 O -0.441      
7 N -0.188      
8 C 0.295      
9 C -0.390      
10 H 0.224      
11 H 0.235      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.554 3.252 0.000 3.299
CHELPG -0.499 3.202 0.001 3.241
AIM -2.265 -2.135 0.004 3.113
ESP -0.536 3.224 0.001 3.268


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.354 2.435 -0.001
y 2.435 -36.693 0.000
z -0.001 0.000 -36.192
Traceless
 xyz
x 7.089 2.435 -0.001
y 2.435 -3.920 0.000
z -0.001 0.000 -3.168
Polar
3z2-r2-6.337
x2-y27.339
xy2.435
xz-0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.383 -0.144 -0.000
y -0.144 6.743 -0.001
z -0.000 -0.001 3.784


<r2> (average value of r2) Å2
<r2> 134.831
(<r2>)1/2 11.612