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

using model chemistry: B3LYP/6-31G*

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/6-31G*
 hartrees
Energy at 0K-285.357334
Energy at 298.15K-285.363767
Nuclear repulsion energy222.856578
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/6-31G*
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 3297 3166 1.13      
2 A 3278 3148 0.26      
3 A 3153 3028 7.25      
4 A 3113 2989 14.57      
5 A 3058 2937 16.29      
6 A 1630 1566 24.76      
7 A 1521 1461 10.49      
8 A 1513 1453 7.50      
9 A 1494 1435 4.30      
10 A 1460 1402 39.64      
11 A 1434 1377 4.69      
12 A 1304 1252 2.07      
13 A 1162 1116 16.17      
14 A 1095 1051 9.48      
15 A 1078 1036 3.12      
16 A 1043 1001 1.89      
17 A 986 947 1.89      
18 A 939 902 3.38      
19 A 902 866 27.07      
20 A 865 830 0.33      
21 A 788 757 37.05      
22 A 664 638 0.73      
23 A 660 634 5.65      
24 A 610 585 4.12      
25 A 336 323 6.43      
26 A 273 262 4.30      
27 A 130 124 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18891.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 18141.5 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/6-31G*
ABC
0.30508 0.11701 0.08593

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.133 0.026 0.000
H2 -2.526 0.541 -0.884
H3 -2.507 -1.001 -0.000
H4 -2.526 0.541 0.884
C5 1.486 0.576 0.000
O6 1.382 -0.766 0.000
N7 0.025 -1.111 -0.000
C8 -0.635 0.028 0.000
C9 0.255 1.147 -0.000
H10 0.005 2.198 -0.000
H11 2.493 0.969 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09601.09271.09603.66123.60302.43901.49792.63823.04774.7217
H21.09601.77731.76844.10904.21433.16492.14952.98053.15185.1148
H31.09271.77731.77734.29333.89572.53402.13553.49874.06705.3743
H41.09601.76841.77734.10904.21433.16492.14952.98063.15205.1148
C53.66124.10904.29334.10901.34542.23182.19141.35762.19671.0810
O63.60304.21433.89574.21431.34541.40022.16752.21993.26752.0603
N72.43903.16492.53403.16492.23181.40021.31602.26953.30853.2280
C81.49792.14952.13552.14952.19142.16751.31601.43022.26253.2673
C92.63822.98053.49872.98061.35762.21992.26951.43021.08002.2455
H103.04773.15184.06703.15202.19673.26753.30852.26251.08002.7751
H114.72175.11485.37435.11481.08102.06033.22803.26732.24552.7751

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 120.040 C1 C8 C9 128.563
H2 C1 H3 108.592 H2 C1 H4 107.556
H2 C1 C8 110.976 H3 C1 H4 108.592
H3 C1 C8 110.060 H4 C1 C8 110.977
C5 O6 N7 108.734 C5 C9 C8 103.610
C5 C9 H10 128.266 O6 C5 C9 110.424
O6 C5 H11 115.803 O6 N7 C8 105.835
N7 C8 C9 111.397 C8 C9 H10 128.124
C9 C5 H11 133.773
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.523 -0.305   -0.532
2 H 0.170 0.084   0.143
3 H 0.185 0.096   0.149
4 H 0.170 0.084   0.143
5 C 0.150 0.173   0.199
6 O -0.322 -0.092   -0.104
7 N -0.218 -0.409   -0.412
8 C 0.325 0.536   0.642
9 C -0.258 -0.434   -0.538
10 H 0.149 0.171   0.209
11 H 0.173 0.098   0.103


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.533 2.931 0.000 2.979
CHELPG -0.485 2.878 0.000 2.918
AIM        
ESP -0.518 2.896 0.000 2.942


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.355 2.038 0.000
y 2.038 -35.995 -0.000
z 0.000 -0.000 -35.616
Traceless
 xyz
x 6.450 2.038 0.000
y 2.038 -3.509 -0.000
z 0.000 -0.000 -2.941
Polar
3z2-r2-5.881
x2-y26.640
xy2.038
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.132 0.117 -0.000
y 0.117 7.147 0.001
z -0.000 0.001 3.864


<r2> (average value of r2) Å2
<r2> 137.073
(<r2>)1/2 11.708