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

using model chemistry: LSDA/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 LSDA/6-311G*
 hartrees
Energy at 0K-283.890747
Energy at 298.15K-283.897044
Nuclear repulsion energy225.272538
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 LSDA/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 3200 3148 0.42      
2 A 3164 3112 0.98      
3 A 3084 3033 3.18      
4 A 3041 2992 2.98      
5 A 2979 2930 7.83      
6 A 1632 1605 43.65      
7 A 1509 1485 37.96      
8 A 1437 1413 10.25      
9 A 1417 1394 14.16      
10 A 1362 1340 4.75      
11 A 1356 1334 8.68      
12 A 1264 1243 20.00      
13 A 1179 1160 15.11      
14 A 1033 1016 2.96      
15 A 1023 1006 6.41      
16 A 1013 996 9.18      
17 A 986 970 9.40      
18 A 937 922 2.96      
19 A 907 892 14.17      
20 A 854 840 5.47      
21 A 773 761 42.69      
22 A 668 657 0.17      
23 A 648 637 2.65      
24 A 643 632 0.01      
25 A 327 322 2.50      
26 A 246 242 3.02      
27 A 81 80 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 18380.1 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 18080.6 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 LSDA/6-311G*
ABC
0.31148 0.12090 0.08854

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.082 0.017 0.000
H2 2.446 -0.527 -0.886
H3 2.534 1.018 -0.000
H4 2.446 -0.526 0.887
C5 0.619 0.111 -0.000
O6 -0.062 -1.043 0.000
N7 -1.414 -0.789 -0.000
C8 -1.518 0.513 0.000
H9 -2.515 0.957 -0.000
C10 -0.261 1.148 -0.000
H11 -0.037 2.212 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.10211.09831.10211.46592.39203.58813.63424.69212.60173.0508
H21.10211.78321.77342.12892.71023.96984.19355.25393.30483.8020
H31.09831.78321.78322.11883.31504.34234.08345.04942.79822.8346
H41.10211.77341.78322.12892.71063.97014.19355.25383.30463.8015
C51.46592.12892.11882.12891.34052.22382.17473.24621.35992.2007
O62.39202.71023.31502.71061.34051.37582.13153.16502.20013.2553
N73.58813.96984.34233.97012.22381.37581.30682.06392.25423.3021
C83.63424.19354.08344.19352.17472.13151.30681.09111.40792.2535
H94.69215.25395.04945.25383.24623.16502.06391.09112.26202.7778
C102.60173.30482.79823.30461.35992.20012.25421.40792.26201.0875
H113.05083.80202.83463.80152.20073.25533.30212.25352.77781.0875

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 116.861 C1 C5 C10 134.020
H2 C1 H3 108.272 H2 C1 H4 107.133
H2 C1 C5 111.202 H3 C1 H4 108.271
H3 C1 C5 110.619 H4 C1 C5 111.203
C5 O6 N7 109.899 C5 C10 C8 103.560
C5 C10 H11 127.763 O6 C5 C10 109.119
O6 N7 C8 105.198 N7 C8 H9 118.523
N7 C8 C10 112.224 C8 C10 H11 128.677
H9 C8 C10 129.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.773      
2 H 0.277      
3 H 0.267      
4 H 0.277      
5 C 0.283      
6 O -0.183      
7 N -0.131      
8 C -0.063      
9 H 0.241      
10 C -0.427      
11 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.004 2.543 0.000 3.238
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.358 -3.551 0.000
y -3.551 -35.521 -0.000
z 0.000 -0.000 -36.378
Traceless
 xyz
x 4.591 -3.551 0.000
y -3.551 -1.653 -0.000
z 0.000 -0.000 -2.938
Polar
3z2-r2-5.876
x2-y24.162
xy-3.551
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.986 -0.408 0.000
y -0.408 7.582 0.000
z 0.000 0.000 4.483


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000