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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-285.239805
Energy at 298.15K-285.246289
Nuclear repulsion energy224.412616
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 B1B95/6-31G*
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 3330 3161 0.70      
2 A 3308 3140 0.17      
3 A 3194 3032 5.24      
4 A 3157 2997 11.11      
5 A 3089 2933 13.83      
6 A 1663 1578 26.30      
7 A 1536 1459 5.69      
8 A 1519 1442 15.61      
9 A 1512 1435 8.42      
10 A 1482 1407 42.70      
11 A 1432 1359 0.64      
12 A 1317 1251 2.04      
13 A 1191 1130 15.80      
14 A 1103 1048 9.50      
15 A 1076 1021 3.49      
16 A 1050 997 2.88      
17 A 992 942 5.63      
18 A 982 932 13.64      
19 A 922 875 14.55      
20 A 881 836 0.52      
21 A 796 755 40.13      
22 A 670 636 5.02      
23 A 670 636 0.29      
24 A 620 589 4.52      
25 A 334 317 6.59      
26 A 276 262 4.88      
27 A 133 127 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19115.9 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 18146.7 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 B1B95/6-31G*
ABC
0.30872 0.11872 0.08714

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.120 0.024 -0.000
H2 -2.512 0.536 -0.882
H3 -2.487 -1.002 -0.000
H4 -2.512 0.536 0.882
C5 1.478 0.568 -0.000
O6 1.365 -0.762 -0.000
N7 0.029 -1.101 0.000
C8 -0.630 0.030 -0.000
C9 0.254 1.143 0.000
H10 0.009 2.193 0.000
H11 2.485 0.954 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09271.08981.09273.63833.57262.42591.48932.62483.03884.6979
H21.09271.77291.76404.08654.18333.14952.13912.96673.14315.0919
H31.08981.77291.77294.26453.86012.51872.12413.48134.05425.3434
H41.09271.76401.77294.08644.18303.14912.13912.96673.14315.0918
C53.63834.08654.26454.08641.33502.20992.17581.35192.19031.0789
O63.57264.18333.86014.18301.33501.37822.14712.20593.25142.0493
N72.42593.14952.51873.14912.20991.37821.30912.25583.29393.2022
C81.48932.13912.12412.13912.17582.14711.30911.42262.25573.2499
C92.62482.96673.48132.96671.35192.20592.25581.42261.07762.2388
H103.03883.14314.05423.14312.19033.25143.29392.25571.07762.7688
H114.69795.09195.34345.09181.07892.04933.20223.24992.23882.7688

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 120.055 C1 C8 C9 128.672
H2 C1 H3 108.650 H2 C1 H4 107.641
H2 C1 C8 110.948 H3 C1 H4 108.650
H3 C1 C8 109.927 H4 C1 C8 110.946
C5 O6 N7 109.064 C5 C9 C8 103.267
C5 C9 H10 128.362 O6 C5 C9 110.364
O6 C5 H11 115.794 O6 N7 C8 106.033
N7 C8 C9 111.273 C8 C9 H10 128.370
C9 C5 H11 133.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.558      
2 H 0.187      
3 H 0.203      
4 H 0.187      
5 C 0.140      
6 O -0.329      
7 N -0.203      
8 C 0.286      
9 C -0.287      
10 H 0.177      
11 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.485 2.910 -0.000 2.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.036 1.986 -0.000
y 1.986 -35.680 0.001
z -0.000 0.001 -35.540
Traceless
 xyz
x 6.575 1.986 -0.000
y 1.986 -3.392 0.001
z -0.000 0.001 -3.182
Polar
3z2-r2-6.365
x2-y26.644
xy1.986
xz-0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.972 0.096 0.000
y 0.096 7.087 0.000
z 0.000 0.000 3.865


<r2> (average value of r2) Å2
<r2> 135.389
(<r2>)1/2 11.636