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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-51.339118
Energy at 298.15K-51.345451
Nuclear repulsion energy113.948752
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 3303 3198 0.43      
2 A 3275 3171 0.45      
3 A 3162 3062 17.61      
4 A 3127 3028 32.63      
5 A 3052 2956 24.36      
6 A 1571 1522 27.89      
7 A 1499 1452 15.96      
8 A 1498 1451 15.71      
9 A 1453 1407 18.51      
10 A 1433 1387 3.12      
11 A 1404 1360 22.21      
12 A 1270 1230 1.10      
13 A 1123 1087 15.15      
14 A 1077 1043 6.31      
15 A 1038 1005 17.93      
16 A 1024 992 0.18      
17 A 974 943 1.26      
18 A 907 878 3.89      
19 A 892 864 1.66      
20 A 836 810 23.48      
21 A 809 784 78.96      
22 A 654 633 0.08      
23 A 641 621 8.12      
24 A 568 550 6.57      
25 A 325 314 7.53      
26 A 269 261 6.33      
27 A 120 116 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 18652.3 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 18062.8 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
0.28937 0.11182 0.08191

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 2.151 0.028 0.000
H2 2.536 0.548 0.893
H3 2.534 -1.003 -0.001
H4 2.537 0.550 -0.892
C5 -1.547 0.599 0.000
O6 -1.452 -0.790 0.000
N7 -0.031 -1.160 -0.000
C8 0.632 0.019 -0.000
C9 -0.278 1.161 -0.000
H10 -0.013 2.213 -0.000
H11 -2.554 1.004 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10331.10011.10333.74183.69422.48401.51842.68013.07524.8051
H21.10331.79061.78514.18064.30073.21062.16883.01583.17335.1885
H31.10011.79061.79064.38503.99232.57042.15973.54884.10295.4704
H41.10331.78511.79064.18054.30113.21122.16893.01533.17225.1884
C53.74184.18064.38504.18051.39172.32212.25531.38812.22671.0854
O63.69424.30073.99234.30111.39171.46842.23572.27653.32932.1053
N72.48403.21062.57043.21122.32211.46841.35292.33393.37273.3241
C81.51842.16882.15972.16892.25532.23571.35291.46022.28653.3352
C92.68013.01583.54883.01531.38812.27652.33391.46021.08472.2815
H103.07523.17334.10293.17222.22673.32933.37272.28651.08472.8137
H114.80515.18855.47045.18841.08542.10533.32413.33522.28152.8137

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 119.680 C1 C8 C9 128.246
H2 C1 H3 108.708 H2 C1 H4 107.989
H2 C1 C8 110.633 H3 C1 H4 108.706
H3 C1 C8 110.100 H4 C1 C8 110.639
C5 O6 N7 108.533 C5 C9 C8 104.682
C5 C9 H10 128.017 O6 C5 C9 109.959
O6 C5 H11 115.854 O6 N7 C8 104.751
N7 C8 C9 112.074 C8 C9 H10 127.301
C9 C5 H11 134.187
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 -0.340      
2 H 0.150      
3 H 0.185      
4 H 0.150      
5 C -0.365      
6 O -0.153      
7 N 0.164      
8 C -0.537      
9 C 0.110      
10 H 0.334      
11 H 0.301      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.077 3.735 0.000 3.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.600 -3.171 -0.000
y -3.171 -37.367 -0.000
z -0.000 -0.000 -36.454
Traceless
 xyz
x 7.310 -3.171 -0.000
y -3.171 -4.340 -0.000
z -0.000 -0.000 -2.970
Polar
3z2-r2-5.941
x2-y27.766
xy-3.171
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.607 -0.069 -0.002
y -0.069 7.491 0.001
z -0.002 0.001 4.061


<r2> (average value of r2) Å2
<r2> 116.394
(<r2>)1/2 10.789