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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-51.352895
Energy at 298.15K-51.359273
Nuclear repulsion energy114.376958
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 B3LYP/CEP-121G
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 3272 3188 1.31      
2 A 3245 3163 0.37      
3 A 3119 3039 12.34      
4 A 3080 3001 23.32      
5 A 3006 2929 23.55      
6 A 1563 1523 25.38      
7 A 1507 1469 12.36      
8 A 1505 1467 17.93      
9 A 1445 1408 20.54      
10 A 1433 1397 1.05      
11 A 1393 1357 24.08      
12 A 1272 1240 0.51      
13 A 1126 1097 14.41      
14 A 1080 1052 2.70      
15 A 1038 1012 18.08      
16 A 1026 1000 1.29      
17 A 969 945 2.26      
18 A 896 873 1.46      
19 A 883 861 1.00      
20 A 831 810 23.15      
21 A 797 776 66.72      
22 A 643 626 0.03      
23 A 639 623 8.34      
24 A 568 554 4.54      
25 A 328 320 7.28      
26 A 263 257 4.73      
27 A 129 126 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 18527.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 18055.5 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 B3LYP/CEP-121G
ABC
0.29199 0.11257 0.08251

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.143 0.029 0.000
H2 2.529 0.545 0.888
H3 2.523 -0.997 -0.002
H4 2.529 0.548 -0.886
C5 -1.539 0.599 -0.000
O6 -1.451 -0.787 0.000
N7 -0.029 -1.156 -0.000
C8 0.631 0.020 -0.000
C9 -0.279 1.152 0.000
H10 -0.014 2.199 -0.000
H11 -2.539 1.009 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09751.09391.09753.72583.68492.47341.51172.66933.05914.7833
H21.09751.78001.77444.16454.28983.19752.16043.00703.16065.1664
H31.09391.78001.78004.36453.97942.55662.14813.53114.08005.4451
H41.09751.77441.78004.16424.29053.19862.16053.00603.15875.1660
C53.72584.16454.36454.16421.38872.31562.24601.37642.21081.0807
O63.68494.28983.97944.29051.38871.46942.23282.26573.31372.0999
N72.47343.19752.55663.19862.31561.46941.34852.32173.35493.3151
C81.51172.16042.14812.16052.24602.23281.34851.45222.27193.3207
C92.66933.00703.53113.00601.37642.26572.32171.45221.07982.2649
H103.05913.16064.08003.15872.21083.31373.35492.27191.07982.7920
H114.78335.16645.44515.16601.08072.09993.31513.32072.26492.7920

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 119.604 C1 C8 C9 128.465
H2 C1 H3 108.642 H2 C1 H4 107.883
H2 C1 C8 110.785 H3 C1 H4 108.643
H3 C1 C8 110.025 H4 C1 C8 110.790
C5 O6 N7 108.198 C5 C9 C8 105.095
C5 C9 H10 127.920 O6 C5 C9 110.046
O6 C5 H11 115.940 O6 N7 C8 104.729
N7 C8 C9 111.932 C8 C9 H10 126.985
C9 C5 H11 134.014
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.625      
2 H 0.173      
3 H 0.189      
4 H 0.173      
5 C -0.161      
6 O -0.185      
7 N 0.106      
8 C -0.097      
9 C 0.019      
10 H 0.206      
11 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.016 3.615 0.000 3.755
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.996 -3.017 0.000
y -3.017 -37.686 -0.000
z 0.000 -0.000 -36.692
Traceless
 xyz
x 7.193 -3.017 0.000
y -3.017 -4.342 -0.000
z 0.000 -0.000 -2.851
Polar
3z2-r2-5.701
x2-y27.690
xy-3.017
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.946 -0.112 0.003
y -0.112 7.918 0.001
z 0.003 0.001 4.696


<r2> (average value of r2) Å2
<r2> 115.879
(<r2>)1/2 10.765