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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-285.035045
Energy at 298.15K-285.041463
HF Energy-285.035045
Nuclear repulsion energy224.621477
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 PBE1PBE/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 3321 3156 0.11      
2 A 3286 3122 3.63      
3 A 3188 3029 6.05      
4 A 3152 2995 5.78      
5 A 3083 2930 11.16      
6 A 1681 1597 36.09      
7 A 1563 1485 45.34      
8 A 1514 1439 8.71      
9 A 1501 1426 9.01      
10 A 1437 1366 1.49      
11 A 1404 1335 8.21      
12 A 1300 1235 21.80      
13 A 1233 1172 9.74      
14 A 1078 1024 5.08      
15 A 1073 1020 1.74      
16 A 1043 991 15.71      
17 A 1030 979 0.38      
18 A 969 921 6.80      
19 A 938 891 15.22      
20 A 911 866 4.77      
21 A 808 767 35.45      
22 A 673 640 0.38      
23 A 656 623 3.38      
24 A 653 621 0.12      
25 A 335 319 2.21      
26 A 254 241 2.18      
27 A 95 90 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 19087.8 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 18139.1 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 PBE1PBE/6-31G*
ABC
0.31049 0.11969 0.08781

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.098 0.014 -0.000
H2 -2.454 -0.525 0.884
H3 -2.541 1.012 -0.001
H4 -2.454 -0.526 -0.884
C5 -0.617 0.112 -0.000
O6 0.066 -1.044 0.000
N7 1.422 -0.790 -0.000
C8 1.525 0.514 -0.000
H9 2.512 0.959 0.000
C10 0.261 1.153 0.000
H11 0.039 2.209 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09541.09211.09541.48352.40863.61013.65744.70602.61873.0630
H21.09541.77611.76782.13552.72023.98394.20675.25843.31153.8043
H31.09211.77611.77612.12433.32074.35374.09725.05412.80552.8442
H41.09541.76781.77612.13552.71983.98364.20675.25843.31173.8047
C51.48352.13552.12432.13551.34302.22962.18023.24261.36182.1977
O62.40862.72023.32072.71981.34301.37962.13523.16262.20593.2539
N73.61013.98394.35373.98362.22961.37961.30812.06182.26343.3030
C83.65744.20674.09724.20672.18022.13521.30811.08301.41702.2550
H94.70605.25845.05415.25843.24263.16262.06181.08302.26012.7716
C102.61873.31152.80553.31171.36182.20592.26341.41702.26011.0796
H113.06303.80432.84423.80472.19773.25393.30302.25502.77161.0796

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 116.805 C1 C5 C10 133.914
H2 C1 H3 108.568 H2 C1 H4 107.597
H2 C1 C5 110.908 H3 C1 H4 108.571
H3 C1 C5 110.203 H4 C1 C5 110.904
C5 O6 N7 109.950 C5 C10 C8 103.344
C5 C10 H11 127.992 O6 C5 C10 109.281
O6 N7 C8 105.172 N7 C8 H9 118.849
N7 C8 C10 112.253 C8 C10 H11 128.664
H9 C8 C10 128.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.600      
2 H 0.213      
3 H 0.201      
4 H 0.213      
5 C 0.406      
6 O -0.361      
7 N -0.156      
8 C 0.020      
9 H 0.198      
10 C -0.322      
11 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.931 2.557 -0.000 3.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.844 3.540 0.000
y 3.540 -34.952 -0.000
z 0.000 -0.000 -35.625
Traceless
 xyz
x 4.444 3.540 0.000
y 3.540 -1.718 -0.000
z 0.000 -0.000 -2.727
Polar
3z2-r2-5.453
x2-y24.108
xy3.540
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.195 0.393 -0.000
y 0.393 7.150 0.000
z -0.000 0.000 3.871


<r2> (average value of r2) Å2
<r2> 134.843
(<r2>)1/2 11.612