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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-285.345936
Energy at 298.15K-285.352448
Nuclear repulsion energy224.492213
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 mPW1PW91/6-311G*
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 3306 3155 1.26      
2 A 3283 3134 0.31      
3 A 3169 3025 7.75      
4 A 3132 2989 14.87      
5 A 3070 2930 16.62      
6 A 1648 1572 29.89      
7 A 1524 1455 7.03      
8 A 1510 1441 16.42      
9 A 1503 1435 10.11      
10 A 1468 1401 46.78      
11 A 1423 1358 1.04      
12 A 1313 1253 1.78      
13 A 1178 1124 20.14      
14 A 1101 1051 10.46      
15 A 1074 1025 2.71      
16 A 1050 1002 1.65      
17 A 990 945 3.60      
18 A 973 929 13.91      
19 A 929 887 17.31      
20 A 884 843 0.46      
21 A 792 756 49.76      
22 A 674 643 0.10      
23 A 673 642 5.13      
24 A 624 596 5.03      
25 A 338 323 6.82      
26 A 276 264 5.95      
27 A 131 125 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 19017.4 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 18150.2 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 mPW1PW91/6-311G*
ABC
0.30944 0.11865 0.08715

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.120 0.024 0.000
H2 -2.513 0.537 -0.880
H3 -2.490 -1.000 -0.002
H4 -2.513 0.534 0.882
C5 1.478 0.567 0.000
O6 1.366 -0.762 0.000
N7 0.030 -1.099 -0.000
C8 -0.632 0.028 -0.000
C9 0.255 1.143 -0.000
H10 0.011 2.192 -0.000
H11 2.485 0.953 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09211.08891.09213.63863.57322.42541.48842.62543.04034.6977
H21.09211.77071.76254.08724.18433.14942.13862.96723.14425.0922
H31.08891.77071.77064.26573.86282.52132.12373.48234.05545.3442
H41.09211.76251.77064.08744.18353.14802.13862.96863.14685.0926
C53.63864.08724.26574.08741.33302.20722.17721.35182.18961.0785
O63.57324.18433.86284.18351.33301.37802.14802.20473.24972.0472
N72.42543.14942.52133.14802.20721.37801.30712.25323.29143.1996
C81.48842.13862.12372.13862.17722.14801.30711.42422.25753.2508
C92.62542.96723.48232.96861.35182.20472.25321.42421.07752.2380
H103.04033.14424.05543.14682.18963.24973.29142.25751.07752.7671
H114.69775.09225.34425.09261.07852.04723.19963.25082.23802.7671

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 120.232 C1 C8 C9 128.674
H2 C1 H3 108.560 H2 C1 H4 107.595
H2 C1 C8 111.018 H3 C1 H4 108.554
H3 C1 C8 110.009 H4 C1 C8 111.015
C5 O6 N7 108.999 C5 C9 C8 103.279
C5 C9 H10 128.312 O6 C5 C9 110.405
O6 C5 H11 115.791 O6 N7 C8 106.224
N7 C8 C9 111.094 C8 C9 H10 128.409
C9 C5 H11 133.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.711      
2 H 0.243      
3 H 0.257      
4 H 0.243      
5 C 0.084      
6 O -0.193      
7 N -0.178      
8 C 0.258      
9 C -0.457      
10 H 0.214      
11 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.483 2.964 0.001 3.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.314 2.009 0.000
y 2.009 -36.225 -0.000
z 0.000 -0.000 -36.157
Traceless
 xyz
x 6.877 2.009 0.000
y 2.009 -3.490 -0.000
z 0.000 -0.000 -3.387
Polar
3z2-r2-6.775
x2-y26.911
xy2.009
xz0.000
yz-0.000


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> 135.671
(<r2>)1/2 11.648