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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-285.327506
Energy at 298.15K-285.333949
Nuclear repulsion energy224.385969
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/aug-cc-pVDZ
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 3308 3170 0.26      
2 A 3268 3132 2.23      
3 A 3179 3047 6.36      
4 A 3142 3011 5.61      
5 A 3069 2941 12.73      
6 A 1665 1596 41.83      
7 A 1549 1485 48.86      
8 A 1469 1408 7.65      
9 A 1453 1393 8.18      
10 A 1396 1338 1.20      
11 A 1383 1326 8.25      
12 A 1282 1229 22.56      
13 A 1213 1162 9.97      
14 A 1058 1014 2.97      
15 A 1051 1007 2.20      
16 A 1031 988 12.95      
17 A 1013 971 2.67      
18 A 955 915 6.27      
19 A 927 889 16.45      
20 A 904 867 6.78      
21 A 793 760 41.93      
22 A 670 642 0.29      
23 A 650 623 2.34      
24 A 649 622 0.35      
25 A 337 323 2.30      
26 A 254 243 2.46      
27 A 101 96 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 18884.4 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 18096.9 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/aug-cc-pVDZ
ABC
0.31009 0.11943 0.08764

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.100 0.015 0.000
H2 -2.455 -0.525 0.887
H3 -2.537 1.018 -0.000
H4 -2.455 -0.525 -0.887
C5 -0.620 0.110 -0.000
O6 0.065 -1.046 -0.000
N7 1.423 -0.790 0.000
C8 1.528 0.515 0.000
H9 2.519 0.960 0.000
C10 0.260 1.153 0.000
H11 0.036 2.211 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09731.09381.09731.48292.41103.61313.66234.71432.61943.0632
H21.09731.78121.77362.13462.72173.98624.21095.26563.31183.8045
H31.09381.78121.78122.12133.32144.35284.09675.05652.80042.8363
H41.09731.77361.78122.13452.72153.98604.21095.26573.31193.8047
C51.48292.13462.12132.13451.34402.23192.18603.25171.36392.2010
O62.41102.72173.32142.72151.34401.38142.13943.16942.20723.2576
N73.61313.98624.35283.98602.23191.38141.30852.06472.26363.3060
C83.66234.21094.09674.21092.18602.13941.30851.08601.41992.2600
H94.71435.26565.05655.26573.25173.16942.06471.08602.26732.7808
C102.61943.31182.80043.31191.36392.20722.26361.41992.26731.0823
H113.06323.80452.83633.80472.20103.25763.30602.26002.78081.0823

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 116.964 C1 C5 C10 133.841
H2 C1 H3 108.765 H2 C1 H4 107.838
H2 C1 C5 110.754 H3 C1 H4 108.767
H3 C1 C5 109.902 H4 C1 C5 110.751
C5 O6 N7 109.943 C5 C10 C8 103.467
C5 C10 H11 127.880 O6 C5 C10 109.195
O6 N7 C8 105.337 N7 C8 H9 118.844
N7 C8 C10 112.058 C8 C10 H11 128.653
H9 C8 C10 129.099
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.424      
2 H -0.009      
3 H -0.092      
4 H -0.009      
5 C 0.153      
6 O -0.631      
7 N -0.325      
8 C 0.414      
9 H -0.305      
10 C 0.867      
11 H -0.487      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.006 2.638 -0.000 3.314
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.471 3.770 0.000
y 3.770 -35.674 -0.000
z 0.000 -0.000 -36.313
Traceless
 xyz
x 4.522 3.770 0.000
y 3.770 -1.782 -0.000
z 0.000 -0.000 -2.740
Polar
3z2-r2-5.481
x2-y24.203
xy3.770
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.762 0.253 0.000
y 0.253 8.487 0.000
z 0.000 0.000 5.914


<r2> (average value of r2) Å2
<r2> 135.476
(<r2>)1/2 11.639