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

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-285.340209
Energy at 298.15K-285.346686
Nuclear repulsion energy225.701015
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 B1B95/cc-pVTZ
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 3158 0.26      
2 A 3259 3119 3.25      
3 A 3168 3032 6.61      
4 A 3130 2995 6.05      
5 A 3068 2937 11.50      
6 A 1668 1596 40.67      
7 A 1549 1482 48.70      
8 A 1489 1425 8.37      
9 A 1475 1412 7.78      
10 A 1413 1352 1.24      
11 A 1391 1332 8.46      
12 A 1286 1231 23.60      
13 A 1222 1169 8.76      
14 A 1064 1019 3.09      
15 A 1062 1016 3.06      
16 A 1033 989 12.78      
17 A 1020 976 1.97      
18 A 957 916 7.52      
19 A 929 889 16.32      
20 A 924 884 4.43      
21 A 813 778 38.25      
22 A 670 641 0.38      
23 A 659 631 1.28      
24 A 655 627 1.88      
25 A 334 320 2.09      
26 A 256 245 2.22      
27 A 106 101 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 18948.1 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 18135.2 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 B1B95/cc-pVTZ
ABC
0.31395 0.12074 0.08863

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.089 0.015 -0.000
H2 2.441 -0.522 -0.879
H3 2.527 1.008 -0.001
H4 2.441 -0.521 0.879
C5 0.615 0.110 -0.000
O6 -0.065 -1.041 0.000
N7 -1.417 -0.783 0.000
C8 -1.519 0.512 -0.000
H9 -2.499 0.957 -0.000
C10 -0.258 1.145 0.000
H11 -0.036 2.195 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.08851.08501.08851.47692.39853.59523.64164.68372.60403.0433
H21.08851.76611.75752.12272.70513.96484.18575.23113.29123.7796
H31.08501.76611.76612.11273.30404.33174.07665.02702.78832.8244
H41.08851.75751.76612.12272.70543.96504.18565.23103.29093.7791
C51.47692.12272.11272.12271.33702.21932.17123.22721.35342.1835
O62.39852.70513.30402.70541.33701.37662.12793.14992.19503.2362
N73.59523.96484.33173.96502.21931.37661.29922.04962.24993.2827
C83.64164.18574.07664.18562.17122.12791.29921.07681.41142.2433
H94.68375.23115.02705.23103.22723.14992.04961.07682.24972.7573
C102.60403.29122.78833.29091.35342.19502.24991.41142.24971.0728
H113.04333.77962.82443.77912.18353.23623.28272.24332.75731.0728

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 116.853 C1 C5 C10 133.811
H2 C1 H3 108.701 H2 C1 H4 107.673
H2 C1 C5 110.760 H3 C1 H4 108.700
H3 C1 C5 110.169 H4 C1 C5 110.760
C5 O6 N7 109.728 C5 C10 C8 103.475
C5 C10 H11 127.927 O6 C5 C10 109.336
O6 N7 C8 105.320 N7 C8 H9 118.931
N7 C8 C10 112.141 C8 C10 H11 128.598
H9 C8 C10 128.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.345      
2 H 0.136      
3 H 0.125      
4 H 0.136      
5 C 0.199      
6 O -0.100      
7 N -0.086      
8 C -0.089      
9 H 0.144      
10 C -0.273      
11 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.933 2.497 -0.000 3.158
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.261 -3.560 0.000
y -3.560 -35.255 0.000
z 0.000 0.000 -35.852
Traceless
 xyz
x 4.293 -3.560 0.000
y -3.560 -1.699 0.000
z 0.000 0.000 -2.594
Polar
3z2-r2-5.189
x2-y23.994
xy-3.560
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.077 -0.366 0.000
y -0.366 7.840 0.000
z 0.000 0.000 5.053


<r2> (average value of r2) Å2
<r2> 133.950
(<r2>)1/2 11.574