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

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-285.271281
Energy at 298.15K-285.277775
Nuclear repulsion energy224.044567
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 B3PW91/6-31G(2df,p)
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 3295 3168 0.45      
2 A 3268 3142 0.29      
3 A 3160 3038 4.60      
4 A 3121 3000 9.53      
5 A 3054 2936 13.89      
6 A 1628 1565 27.05      
7 A 1506 1448 2.32      
8 A 1487 1429 21.78      
9 A 1476 1419 6.98      
10 A 1447 1391 37.01      
11 A 1399 1345 0.57      
12 A 1299 1249 2.20      
13 A 1172 1127 15.07      
14 A 1089 1047 8.84      
15 A 1060 1019 3.23      
16 A 1036 996 3.19      
17 A 980 943 7.08      
18 A 968 931 6.18      
19 A 919 883 16.04      
20 A 877 843 0.83      
21 A 797 767 37.40      
22 A 674 648 0.39      
23 A 667 641 4.73      
24 A 622 598 3.61      
25 A 334 321 6.53      
26 A 277 266 4.72      
27 A 132 127 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18871.8 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 18143.3 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 B3PW91/6-31G(2df,p)
ABC
0.30805 0.11823 0.08682

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.124 0.023 0.000
H2 2.518 0.537 0.883
H3 2.493 -1.005 0.000
H4 2.518 0.537 -0.883
C5 -1.479 0.569 0.000
O6 -1.370 -0.763 0.000
N7 -0.031 -1.102 -0.000
C8 0.633 0.029 0.000
C9 -0.254 1.145 -0.000
H10 -0.011 2.195 -0.000
H11 -2.487 0.958 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09471.09151.09473.64443.58082.43131.49092.62943.04584.7047
H21.09471.77641.76544.09334.19263.15662.14192.97153.15005.0989
H31.09151.77641.77644.27253.87022.52642.12793.48794.06295.3525
H41.09471.76541.77644.09334.19253.15622.14192.97133.14975.0990
C53.64444.09334.27254.09331.33572.21082.18021.35432.19161.0800
O63.58084.19263.87024.19251.33571.38062.15362.21003.25512.0513
N72.43133.15662.52643.15622.21081.38061.31212.25823.29753.2050
C81.49092.14192.12792.14192.18022.15361.31211.42542.25973.2552
C92.62942.97153.48792.97131.35432.21002.25821.42541.07802.2408
H103.04583.15004.06293.14972.19163.25513.29752.25971.07802.7681
H114.70475.09895.35255.09901.08002.05133.20503.25522.24082.7681

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 120.180 C1 C8 C9 128.729
H2 C1 H3 108.693 H2 C1 H4 107.478
H2 C1 C8 110.944 H3 C1 H4 108.693
H3 C1 C8 110.008 H4 C1 C8 110.942
C5 O6 N7 108.952 C5 C9 C8 103.288
C5 C9 H10 128.226 O6 C5 C9 110.479
O6 C5 H11 115.837 O6 N7 C8 106.190
N7 C8 C9 111.091 C8 C9 H10 128.487
C9 C5 H11 133.684
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.554      
2 H 0.162      
3 H 0.176      
4 H 0.162      
5 C 0.083      
6 O -0.184      
7 N -0.188      
8 C 0.382      
9 C -0.361      
10 H 0.147      
11 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.462 2.806 0.001 2.844
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.950 -1.804 -0.001
y -1.804 -35.562 -0.001
z -0.001 -0.001 -35.322
Traceless
 xyz
x 6.492 -1.804 -0.001
y -1.804 -3.425 -0.001
z -0.001 -0.001 -3.066
Polar
3z2-r2-6.133
x2-y26.612
xy-1.804
xz-0.001
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.432 -0.167 0.003
y -0.167 7.384 -0.001
z 0.003 -0.001 4.368


<r2> (average value of r2) Å2
<r2> 135.715
(<r2>)1/2 11.650