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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-285.356033
Energy at 298.15K-285.362561
Nuclear repulsion energy224.497062
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 3303 3160 0.24      
2 A 3281 3138 0.00      
3 A 3168 3031 5.75      
4 A 3131 2995 11.70      
5 A 3066 2934 14.10      
6 A 1643 1572 30.39      
7 A 1518 1452 3.43      
8 A 1499 1434 24.20      
9 A 1485 1421 9.55      
10 A 1459 1396 41.48      
11 A 1408 1347 1.23      
12 A 1307 1250 1.82      
13 A 1175 1124 20.01      
14 A 1095 1048 10.42      
15 A 1066 1019 2.77      
16 A 1045 1000 1.75      
17 A 986 944 5.96      
18 A 972 930 11.84      
19 A 928 888 16.59      
20 A 897 859 0.40      
21 A 799 765 48.17      
22 A 673 644 0.05      
23 A 672 643 4.93      
24 A 624 597 4.73      
25 A 339 324 6.95      
26 A 276 264 5.86      
27 A 130 125 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18972.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18151.4 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
0.30933 0.11868 0.08717

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 -2.121 0.025 0.000
H2 -2.510 0.537 -0.882
H3 -2.487 -1.001 -0.000
H4 -2.510 0.537 0.882
C5 1.478 0.566 0.000
O6 1.365 -0.763 -0.000
N7 0.029 -1.099 -0.000
C8 -0.632 0.029 -0.000
C9 0.256 1.143 -0.000
H10 0.013 2.192 -0.000
H11 2.484 0.955 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09211.08891.09213.63943.57312.42541.48862.62613.04094.6974
H21.09211.77291.76444.08534.18143.14682.13662.96583.14365.0887
H31.08891.77291.77294.26353.85892.51752.12143.48074.05465.3415
H41.09211.76441.77294.08524.18133.14662.13652.96593.14385.0886
C53.63944.08534.26354.08521.33352.20772.17771.35182.18851.0780
O63.57314.18143.85894.18131.33351.37772.14782.20463.24872.0501
N72.42543.14682.51753.14662.20771.37771.30712.25323.29063.2010
C81.48862.13662.12142.13652.17772.14781.30711.42442.25693.2505
C92.62612.96583.48072.96591.35182.20462.25321.42441.07662.2359
H103.04093.14364.05463.14382.18853.24873.29062.25691.07662.7628
H114.69745.08875.34155.08861.07802.05013.20103.25052.23592.7628

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 120.211 C1 C8 C9 128.706
H2 C1 H3 108.764 H2 C1 H4 107.771
H2 C1 C8 110.835 H3 C1 H4 108.762
H3 C1 C8 109.809 H4 C1 C8 110.833
C5 O6 N7 109.021 C5 C9 C8 103.301
C5 C9 H10 128.280 O6 C5 C9 110.362
O6 C5 H11 116.048 O6 N7 C8 106.233
N7 C8 C9 111.083 C8 C9 H10 128.419
C9 C5 H11 133.590
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 -0.287      
2 H 0.141      
3 H 0.149      
4 H 0.141      
5 C 0.191      
6 O -0.195      
7 N -0.175      
8 C 0.128      
9 C -0.342      
10 H 0.114      
11 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.508 2.952 0.000 2.995
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.274 2.004 0.000
y 2.004 -36.246 -0.000
z 0.000 -0.000 -36.055
Traceless
 xyz
x 6.877 2.004 0.000
y 2.004 -3.581 -0.000
z 0.000 -0.000 -3.295
Polar
3z2-r2-6.590
x2-y26.972
xy2.004
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.415 0.134 0.000
y 0.134 7.448 0.000
z 0.000 0.000 4.464


<r2> (average value of r2) Å2
<r2> 135.616
(<r2>)1/2 11.645