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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: LSDA/3-21G

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/3-21G
 hartrees
Energy at 0K-282.256531
Energy at 298.15K-282.262913
Nuclear repulsion energy220.774650
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/3-21G
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 3247 3194 1.93      
2 A 3217 3165 1.17      
3 A 3095 3045 0.50      
4 A 3067 3016 2.66      
5 A 2997 2948 3.65      
6 A 1556 1531 21.74      
7 A 1485 1461 15.06      
8 A 1480 1455 14.07      
9 A 1441 1417 15.34      
10 A 1398 1375 34.68      
11 A 1381 1358 10.28      
12 A 1263 1242 2.39      
13 A 1112 1094 11.77      
14 A 1058 1041 10.74      
15 A 1038 1021 12.21      
16 A 1021 1004 1.29      
17 A 969 953 1.48      
18 A 918 903 1.03      
19 A 883 868 0.11      
20 A 832 818 11.10      
21 A 775 762 59.82      
22 A 657 647 0.02      
23 A 657 646 4.37      
24 A 591 582 5.38      
25 A 322 317 6.76      
26 A 267 262 6.83      
27 A 141 139 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18432.7 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 18130.4 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 LSDA/3-21G
ABC
0.29730 0.11632 0.08497

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.124 0.032 0.000
H2 -2.513 0.550 -0.895
H3 -2.494 -1.005 0.000
H4 -2.513 0.549 0.895
C5 1.483 0.604 0.000
O6 1.419 -0.767 -0.000
N7 0.003 -1.141 -0.000
C8 -0.644 0.022 0.000
C9 0.236 1.143 -0.000
H10 -0.042 2.191 -0.000
H11 2.479 1.039 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10431.10201.10433.65193.63182.42871.47982.60832.99874.7115
H21.10431.79411.78954.09554.24193.16022.13832.95153.09825.0951
H31.10201.79411.79414.29093.92082.50082.11643.47454.02875.3773
H41.10431.78951.79414.09544.24193.16032.13832.95153.09835.0951
C53.65194.09554.29094.09541.37232.28872.20541.35832.20151.0867
O63.63184.24193.92084.24191.37231.46512.20852.24623.29932.0939
N72.42873.16022.50083.16032.28871.46511.33052.29603.33273.2994
C81.47982.13832.11642.13832.20542.20851.33051.42552.25143.2845
C92.60832.95153.47452.95151.35832.24622.29601.42551.08482.2451
H102.99873.09824.02873.09832.20153.29933.33272.25141.08482.7722
H114.71155.09515.37735.09511.08672.09393.29943.28452.24512.7722

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 119.489 C1 C8 C9 127.721
H2 C1 H3 108.810 H2 C1 H4 108.236
H2 C1 C8 110.845 H3 C1 H4 108.810
H3 C1 C8 109.244 H4 C1 C8 110.845
C5 O6 N7 107.484 C5 C9 C8 104.765
C5 C9 H10 128.262 O6 C5 C9 110.693
O6 C5 H11 116.272 O6 N7 C8 104.267
N7 C8 C9 112.790 C8 C9 H10 126.973
C9 C5 H11 133.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.688      
2 H 0.246      
3 H 0.254      
4 H 0.246      
5 C 0.087      
6 O -0.311      
7 N -0.232      
8 C 0.234      
9 C -0.311      
10 H 0.215      
11 H 0.258      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.782 3.038 0.000 3.137
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.042 2.293 0.000
y 2.293 -36.013 -0.000
z 0.000 -0.000 -36.368
Traceless
 xyz
x 7.149 2.293 0.000
y 2.293 -3.308 -0.000
z 0.000 -0.000 -3.841
Polar
3z2-r2-7.681
x2-y26.971
xy2.293
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.895 0.212 0.000
y 0.212 6.756 0.000
z 0.000 0.000 3.237


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