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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-51.429155
Energy at 298.15K-51.435496
Nuclear repulsion energy115.450755
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 B3LYP/CEP-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 3270 3158 0.82      
2 A 3249 3137 0.25      
3 A 3152 3044 14.41      
4 A 3119 3012 24.13      
5 A 3057 2952 22.24      
6 A 1609 1554 31.28      
7 A 1496 1445 11.93      
8 A 1484 1433 9.98      
9 A 1479 1428 7.92      
10 A 1444 1394 42.72      
11 A 1404 1356 1.88      
12 A 1277 1233 1.65      
13 A 1146 1107 22.48      
14 A 1073 1036 10.06      
15 A 1050 1014 4.55      
16 A 1019 984 1.56      
17 A 969 935 1.21      
18 A 917 885 9.08      
19 A 884 854 22.55      
20 A 876 846 1.93      
21 A 803 776 73.02      
22 A 649 627 0.13      
23 A 645 623 6.16      
24 A 590 570 4.89      
25 A 322 311 6.62      
26 A 269 260 6.03      
27 A 119 115 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18685.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 18044.1 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 B3LYP/CEP-31G*
ABC
0.29828 0.11424 0.08393

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.137 0.020 0.000
H2 2.523 0.541 0.893
H3 2.515 -1.013 -0.000
H4 2.523 0.542 -0.892
C5 -1.531 0.571 -0.000
O6 -1.420 -0.779 0.000
N7 -0.048 -1.130 -0.000
C8 0.619 0.019 0.000
C9 -0.280 1.158 -0.000
H10 -0.031 2.217 -0.000
H11 -2.548 0.963 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10351.10061.10353.70883.64602.46891.51812.67183.08694.7784
H21.10351.79311.78514.15104.25353.19362.16693.00603.18285.1657
H31.10061.79311.79304.34523.94252.56572.15943.54004.11385.4348
H41.10351.78511.79304.15104.25363.19372.16693.00593.18255.1657
C53.70884.15104.34524.15101.35502.25652.21921.38142.22691.0897
O63.64604.25353.94254.25361.35501.41652.19012.24833.30322.0751
N72.46893.19362.56573.19372.25651.41651.32852.29983.34733.2600
C81.51812.16692.15942.16692.21922.19011.32851.45102.29223.3039
C92.67183.00603.54003.00591.38142.24832.29981.45101.08812.2757
H103.08693.18284.11383.18252.22693.30323.34732.29221.08812.8117
H114.77845.16575.43485.16571.08972.07513.26003.30392.27572.8117

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 120.146 C1 C8 C9 128.260
H2 C1 H3 108.878 H2 C1 H4 107.967
H2 C1 C8 110.494 H3 C1 H4 108.875
H3 C1 C8 110.075 H4 C1 C8 110.496
C5 O6 N7 108.988 C5 C9 C8 103.133
C5 C9 H10 128.388 O6 C5 C9 110.484
O6 C5 H11 115.742 O6 N7 C8 105.800
N7 C8 C9 111.594 C8 C9 H10 128.479
C9 C5 H11 133.773
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.344      
2 H 0.150      
3 H 0.185      
4 H 0.150      
5 C -0.440      
6 O -0.061      
7 N 0.163      
8 C -0.543      
9 C 0.096      
10 H 0.343      
11 H 0.302      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.670 3.084 0.000 3.155
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.014 -2.293 -0.000
y -2.293 -36.117 -0.000
z -0.000 -0.000 -36.041
Traceless
 xyz
x 7.065 -2.293 -0.000
y -2.293 -3.589 -0.000
z -0.000 -0.000 -3.476
Polar
3z2-r2-6.952
x2-y27.103
xy-2.293
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.638 -0.086 0.003
y -0.086 7.507 -0.003
z 0.003 -0.003 4.336


<r2> (average value of r2) Å2
<r2> 113.965
(<r2>)1/2 10.675