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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-285.025025
Energy at 298.15K-285.031244
Nuclear repulsion energy222.216670
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 PBEPBEultrafine/6-31G*
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 3222 3169 0.39      
2 A 3186 3133 4.23      
3 A 3095 3044 6.59      
4 A 3055 3004 7.16      
5 A 2994 2945 13.82      
6 A 1607 1581 32.20      
7 A 1483 1459 34.92      
8 A 1468 1444 9.87      
9 A 1455 1431 8.49      
10 A 1389 1366 0.68      
11 A 1341 1319 5.55      
12 A 1237 1216 15.59      
13 A 1184 1164 9.49      
14 A 1040 1023 4.62      
15 A 1036 1019 4.12      
16 A 997 981 8.92      
17 A 973 957 0.74      
18 A 910 895 7.99      
19 A 868 854 12.71      
20 A 856 841 5.46      
21 A 768 756 30.14      
22 A 648 637 0.30      
23 A 626 616 3.00      
24 A 621 611 0.32      
25 A 324 318 1.97      
26 A 242 238 1.97      
27 A 87 86 0.74      

Unscaled Zero Point Vibrational Energy (zpe) 18356.0 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 18053.2 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 PBEPBEultrafine/6-31G*
ABC
0.30366 0.11739 0.08604

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.115 0.016 0.000
H2 2.478 -0.528 -0.889
H3 2.560 1.022 -0.000
H4 2.479 -0.527 0.890
C5 0.627 0.113 -0.000
O6 -0.063 -1.061 0.000
N7 -1.447 -0.796 0.000
C8 -1.534 0.525 -0.000
H9 -2.526 0.982 -0.000
C10 -0.261 1.161 -0.000
H11 -0.035 2.225 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10381.10031.10381.49082.42883.65283.68444.73982.63753.0829
H21.10381.78801.77932.15162.74464.03394.24305.30213.33903.8324
H31.10031.78801.78802.13613.34904.39984.12425.08582.82462.8606
H41.10381.77931.78802.15162.74504.03414.24305.30203.33883.8320
C51.49082.15162.13612.15161.36132.26412.20043.27031.37412.2139
O62.42882.74463.34902.74501.36131.40952.16413.20022.23113.2864
N73.65284.03394.39984.03412.26411.40951.32432.07952.28823.3346
C83.68444.24304.12424.24302.20042.16411.32431.09141.42302.2663
H94.73985.30215.08585.30203.27033.20022.07951.09142.27152.7835
C102.63753.33902.82463.33881.37412.23112.28821.42302.27151.0878
H113.08293.83242.86063.83202.21393.28643.33462.26632.78351.0878

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 116.699 C1 C5 C10 133.999
H2 C1 H3 108.429 H2 C1 H4 107.402
H2 C1 C5 111.165 H3 C1 H4 108.428
H3 C1 C5 110.143 H4 C1 C5 111.165
C5 O6 N7 109.585 C5 C10 C8 103.736
C5 C10 H11 127.743 O6 C5 C10 109.302
O6 N7 C8 104.631 N7 C8 H9 118.506
N7 C8 C10 112.745 C8 C10 H11 128.521
H9 C8 C10 128.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.574      
2 H 0.199      
3 H 0.187      
4 H 0.199      
5 C 0.393      
6 O -0.327      
7 N -0.161      
8 C 0.030      
9 H 0.169      
10 C -0.266      
11 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.935 2.443 -0.000 3.116
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.995 -3.418 0.000
y -3.418 -34.954 0.000
z 0.000 0.000 -35.628
Traceless
 xyz
x 4.297 -3.418 0.000
y -3.418 -1.643 0.000
z 0.000 0.000 -2.654
Polar
3z2-r2-5.308
x2-y23.960
xy-3.418
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.754 -0.380 0.000
y -0.380 7.368 -0.000
z 0.000 -0.000 3.931


<r2> (average value of r2) Å2
<r2> 137.139
(<r2>)1/2 11.711