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

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-285.347733
Energy at 298.15K-285.354179
Nuclear repulsion energy225.057050
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 3300 3150 0.47      
2 A 3266 3117 4.97      
3 A 3169 3025 10.18      
4 A 3133 2990 10.01      
5 A 3071 2931 14.73      
6 A 1670 1594 38.21      
7 A 1553 1482 48.93      
8 A 1509 1440 10.24      
9 A 1495 1427 10.54      
10 A 1430 1365 1.66      
11 A 1397 1333 8.23      
12 A 1287 1228 26.48      
13 A 1228 1172 10.65      
14 A 1075 1026 3.89      
15 A 1068 1020 3.23      
16 A 1041 994 11.99      
17 A 1022 976 1.36      
18 A 964 920 7.13      
19 A 935 892 17.70      
20 A 908 867 5.29      
21 A 812 775 41.30      
22 A 672 642 0.31      
23 A 659 629 1.93      
24 A 654 624 1.07      
25 A 337 321 2.36      
26 A 255 243 2.78      
27 A 97 93 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 19002.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 18136.0 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
0.31223 0.12003 0.08812

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 -2.094 0.015 -0.000
H2 -2.449 -0.524 0.881
H3 -2.540 1.008 -0.001
H4 -2.449 -0.525 -0.881
C5 -0.617 0.110 0.000
O6 0.066 -1.043 0.000
N7 1.421 -0.786 -0.000
C8 1.523 0.513 -0.000
H9 2.509 0.956 0.000
C10 0.258 1.150 0.000
H11 0.035 2.203 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09211.08891.09211.48072.40513.60483.65174.69842.61173.0538
H21.09211.77001.76192.13012.71513.97764.19935.24893.30253.7932
H31.08891.77001.77012.12233.31604.34764.09305.04892.80122.8389
H41.09211.76191.77012.13002.71463.97724.19925.24893.30273.7936
C51.48072.13012.12232.13001.34012.22562.17763.23801.35832.1923
O62.40512.71513.31602.71461.34011.37902.13213.15672.20093.2466
N73.60483.97764.34763.97722.22561.37901.30292.05372.25763.2945
C83.65174.19934.09304.19922.17762.13211.30291.08051.41632.2519
H94.69845.24895.04895.24893.23803.15672.05371.08052.25932.7703
C102.61173.30252.80123.30271.35832.20092.25761.41632.25931.0771
H113.05383.79322.83893.79362.19233.24663.29452.25192.77031.0771

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 116.910 C1 C5 C10 133.791
H2 C1 H3 108.505 H2 C1 H4 107.542
H2 C1 C5 110.875 H3 C1 H4 108.508
H3 C1 C5 110.443 H4 C1 C5 110.870
C5 O6 N7 109.859 C5 C10 C8 103.386
C5 C10 H11 127.986 O6 C5 C10 109.300
O6 N7 C8 105.277 N7 C8 H9 118.714
N7 C8 C10 112.177 C8 C10 H11 128.628
H9 C8 C10 129.108
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 -0.708      
2 H 0.257      
3 H 0.247      
4 H 0.257      
5 C 0.344      
6 O -0.226      
7 N -0.144      
8 C -0.004      
9 H 0.228      
10 C -0.464      
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
  -1.928 2.616 -0.000 3.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.132 3.603 0.000
y 3.603 -35.374 -0.000
z 0.000 -0.000 -36.087
Traceless
 xyz
x 4.598 3.603 0.000
y 3.603 -1.765 -0.000
z 0.000 -0.000 -2.834
Polar
3z2-r2-5.668
x2-y24.242
xy3.603
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> 134.677
(<r2>)1/2 11.605