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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-285.148904
Energy at 298.15K-285.155362
Nuclear repulsion energy221.312348
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 B1B95/6-31G
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 3353 3198 0.07      
2 A 3325 3171 0.33      
3 A 3189 3041 4.68      
4 A 3151 3005 11.23      
5 A 3077 2934 12.38      
6 A 1627 1552 25.99      
7 A 1530 1460 11.64      
8 A 1527 1456 12.91      
9 A 1494 1425 7.70      
10 A 1464 1396 29.64      
11 A 1450 1382 13.92      
12 A 1306 1246 0.40      
13 A 1154 1100 13.48      
14 A 1097 1047 5.50      
15 A 1075 1026 16.11      
16 A 1055 1006 0.17      
17 A 998 952 1.64      
18 A 925 883 1.78      
19 A 920 878 0.05      
20 A 821 783 19.18      
21 A 813 775 54.22      
22 A 669 638 0.02      
23 A 662 631 8.03      
24 A 593 565 5.83      
25 A 341 325 7.29      
26 A 276 263 5.05      
27 A 131 125 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19011.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 18130.8 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 B1B95/6-31G
ABC
0.30008 0.11610 0.08504

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.131 0.035 0.000
H2 2.517 0.551 0.884
H3 2.513 -0.986 0.000
H4 2.517 0.551 -0.884
C5 -1.492 0.596 0.000
O6 -1.405 -0.768 0.000
N7 -0.006 -1.133 -0.000
C8 0.644 0.023 0.000
C9 -0.249 1.142 -0.000
H10 0.017 2.184 -0.000
H11 -2.487 1.006 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09351.09021.09353.66683.62632.43561.48792.62543.01434.7190
H21.09351.77281.76734.10614.23133.15972.13802.96413.11435.1020
H31.09021.77281.77284.30633.92372.52282.12413.48684.03445.3817
H41.09351.76731.77284.10614.23133.15952.13802.96393.11405.1020
C53.66684.10614.30634.10611.36722.28062.21151.35742.19081.0755
O63.62634.23133.92374.23131.36721.44602.19562.23233.27682.0777
N72.43563.15972.52283.15952.28061.44601.32572.28823.31733.2758
C81.48792.13802.12412.13802.21152.19561.32571.43182.25023.2811
C92.62542.96413.48682.96391.35742.23232.28821.43181.07572.2416
H103.01433.11434.03443.11402.19083.27683.31732.25021.07572.7676
H114.71905.10205.38175.10201.07552.07773.27583.28112.24162.7676

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 119.807 C1 C8 C9 128.094
H2 C1 H3 108.555 H2 C1 H4 107.822
H2 C1 C8 110.917 H3 C1 H4 108.555
H3 C1 C8 109.993 H4 C1 C8 110.917
C5 O6 N7 108.293 C5 C9 C8 104.878
C5 C9 H10 128.060 O6 C5 C9 110.036
O6 C5 H11 116.036 O6 N7 C8 104.694
N7 C8 C9 112.099 C8 C9 H10 127.062
C9 C5 H11 133.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.489      
2 H 0.184      
3 H 0.197      
4 H 0.184      
5 C 0.133      
6 O -0.405      
7 N -0.153      
8 C 0.133      
9 C -0.180      
10 H 0.183      
11 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.938 3.506 0.000 3.629
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.451 -2.794 -0.000
y -2.794 -36.749 -0.001
z -0.000 -0.001 -36.001
Traceless
 xyz
x 6.924 -2.794 -0.000
y -2.794 -4.023 -0.001
z -0.000 -0.001 -2.901
Polar
3z2-r2-5.801
x2-y27.298
xy-2.794
xz-0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.006 -0.095 -0.000
y -0.095 7.111 0.000
z -0.000 0.000 3.606


<r2> (average value of r2) Å2
<r2> 138.313
(<r2>)1/2 11.761