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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-283.671749
Energy at 298.15K-283.678176
Nuclear repulsion energy220.092263
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 B3PW91/3-21G*
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 3326 3191 0.48      
2 A 3299 3165 0.17      
3 A 3164 3035 2.34      
4 A 3130 3003 7.33      
5 A 3067 2943 7.44      
6 A 1589 1525 18.03      
7 A 1546 1483 12.25      
8 A 1533 1470 14.35      
9 A 1459 1400 7.19      
10 A 1444 1386 21.51      
11 A 1403 1346 24.98      
12 A 1292 1239 1.37      
13 A 1144 1098 9.75      
14 A 1101 1056 8.41      
15 A 1054 1011 10.75      
16 A 1043 1001 4.61      
17 A 986 946 1.98      
18 A 931 893 0.24      
19 A 921 884 0.98      
20 A 844 809 14.76      
21 A 814 781 59.76      
22 A 670 643 0.13      
23 A 652 625 5.77      
24 A 584 560 6.15      
25 A 331 317 6.44      
26 A 271 260 6.12      
27 A 132 127 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18863.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 18097.7 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 B3PW91/3-21G*
ABC
0.29626 0.11507 0.08420

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.140 0.035 0.000
H2 2.515 0.553 0.890
H3 2.521 -0.990 -0.002
H4 2.515 0.556 -0.888
C5 -1.488 0.609 0.000
O6 -1.429 -0.767 0.000
N7 -0.002 -1.146 -0.000
C8 0.644 0.014 -0.000
C9 -0.240 1.144 -0.000
H10 0.038 2.183 -0.000
H11 -2.473 1.045 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09621.09331.09623.67293.65772.44601.49592.62563.00504.7221
H21.09621.78191.77884.10144.25343.16492.14122.95543.09615.0909
H31.09331.78191.78194.31583.95602.52782.12843.48924.02855.3925
H41.09621.77881.78194.10124.25413.16602.14122.95433.09395.0905
C53.67294.10144.31584.10121.37742.29952.21341.35772.19271.0773
O63.65774.25343.95604.25411.37741.47622.21532.25063.29502.0918
N72.44603.16492.52783.16602.29951.47621.32802.30223.32943.3026
C81.49592.14122.12842.14122.21342.21531.32801.43462.25193.2832
C92.62562.95543.48922.95431.35772.25062.30221.43461.07592.2350
H103.00503.09614.02853.09392.19273.29503.32942.25191.07592.7570
H114.72215.09095.39255.09051.07732.09183.30263.28322.23502.7570

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 119.920 C1 C8 C9 127.247
H2 C1 H3 108.942 H2 C1 H4 108.450
H2 C1 C8 110.435 H3 C1 H4 108.945
H3 C1 C8 109.594 H4 C1 C8 110.437
C5 O6 N7 107.331 C5 C9 C8 104.846
C5 C9 H10 128.206 O6 C5 C9 110.743
O6 C5 H11 116.362 O6 N7 C8 104.247
N7 C8 C9 112.833 C8 C9 H10 126.948
C9 C5 H11 132.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.666      
2 H 0.242      
3 H 0.255      
4 H 0.242      
5 C 0.139      
6 O -0.362      
7 N -0.252      
8 C 0.271      
9 C -0.362      
10 H 0.226      
11 H 0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.878 3.210 0.001 3.328
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.087 -2.618 0.000
y -2.618 -36.189 -0.000
z 0.000 -0.000 -36.430
Traceless
 xyz
x 7.222 -2.618 0.000
y -2.618 -3.431 -0.000
z 0.000 -0.000 -3.791
Polar
3z2-r2-7.583
x2-y27.102
xy-2.618
xz0.000
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 139.246
(<r2>)1/2 11.800