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All results from a given calculation for C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-285.312292
Energy at 298.15K-285.318704
Nuclear repulsion energy224.558343
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3279 3156 0.64      
2 A 3243 3122 4.94      
3 A 3149 3031 9.88      
4 A 3113 2996 9.97      
5 A 3052 2938 15.18      
6 A 1654 1592 37.22      
7 A 1535 1478 46.89      
8 A 1501 1445 10.85      
9 A 1487 1432 10.42      
10 A 1422 1369 1.26      
11 A 1384 1333 7.63      
12 A 1273 1226 25.68      
13 A 1219 1174 10.56      
14 A 1069 1029 3.89      
15 A 1061 1022 3.90      
16 A 1032 994 10.36      
17 A 1011 973 1.24      
18 A 952 916 7.49      
19 A 921 887 17.43      
20 A 899 865 5.32      
21 A 806 776 41.35      
22 A 667 642 0.29      
23 A 655 630 1.87      
24 A 648 624 1.16      
25 A 335 323 2.37      
26 A 252 243 2.75      
27 A 96 93 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 18857.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 18153.9 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 B3PW91/6-311G*
ABC
0.31095 0.11950 0.08774

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.098 0.015 0.000
H2 -2.455 -0.523 0.883
H3 -2.544 1.010 -0.001
H4 -2.455 -0.526 -0.881
C5 -0.619 0.110 0.000
O6 0.066 -1.046 -0.000
N7 1.426 -0.786 0.000
C8 1.525 0.516 -0.000
H9 2.512 0.961 -0.000
C10 0.258 1.151 -0.000
H11 0.034 2.206 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09371.09051.09371.48262.41013.61443.65784.70592.61563.0577
H21.09371.77221.76412.13382.72173.98914.20745.25843.30803.7984
H31.09051.77221.77222.12543.32254.35784.09915.05592.80552.8424
H41.09371.76411.77222.13352.72023.98844.20725.25843.30833.7992
C51.48262.13382.12542.13351.34362.23282.18193.24391.36072.1956
O62.41012.72173.32252.72021.34361.38522.13783.16422.20553.2527
N73.61443.98914.35783.98842.23281.38521.30592.05702.26233.3005
C83.65784.20744.09914.20722.18192.13781.30591.08231.41752.2539
H94.70595.25845.05595.25843.24393.16422.05701.08232.26172.7726
C102.61563.30802.80553.30831.36072.20552.26231.41752.26171.0788
H113.05773.79842.84243.79922.19563.25273.30052.25392.77261.0788

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 116.938 C1 C5 C10 133.781
H2 C1 H3 108.461 H2 C1 H4 107.510
H2 C1 C5 110.931 H3 C1 H4 108.467
H3 C1 C5 110.456 H4 C1 C5 110.912
C5 O6 N7 109.802 C5 C10 C8 103.488
C5 C10 H11 127.938 O6 C5 C10 109.281
O6 N7 C8 105.157 N7 C8 H9 118.636
N7 C8 C10 112.272 C8 C10 H11 128.574
H9 C8 C10 129.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.706      
2 H 0.255      
3 H 0.246      
4 H 0.255      
5 C 0.340      
6 O -0.224      
7 N -0.143      
8 C -0.009      
9 H 0.228      
10 C -0.456      
11 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.934 2.617 -0.000 3.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.149 3.602 -0.001
y 3.602 -35.392 -0.001
z -0.001 -0.001 -36.095
Traceless
 xyz
x 4.594 3.602 -0.001
y 3.602 -1.770 -0.001
z -0.001 -0.001 -2.824
Polar
3z2-r2-5.649
x2-y24.243
xy3.602
xz-0.001
yz-0.001


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


<r2> (average value of r2) Å2
<r2> 135.165
(<r2>)1/2 11.626