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

using model chemistry: B3PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-285.349577
Energy at 298.15K-285.356080
Nuclear repulsion energy224.293850
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/cc-pVTZ
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 3280 3154 0.30      
2 A 3256 3131 0.04      
3 A 3145 3024 5.20      
4 A 3107 2988 9.90      
5 A 3048 2931 13.84      
6 A 1625 1563 30.05      
7 A 1503 1445 4.28      
8 A 1485 1428 22.22      
9 A 1477 1420 7.72      
10 A 1446 1390 39.12      
11 A 1402 1348 0.84      
12 A 1300 1250 2.28      
13 A 1162 1118 18.71      
14 A 1087 1046 9.11      
15 A 1060 1020 2.44      
16 A 1036 996 2.55      
17 A 978 940 2.54      
18 A 953 916 6.73      
19 A 914 879 21.35      
20 A 890 856 0.49      
21 A 790 760 46.83      
22 A 672 646 0.09      
23 A 666 640 4.98      
24 A 620 596 4.18      
25 A 337 324 6.70      
26 A 276 265 5.28      
27 A 129 124 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18821.0 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 18098.3 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/cc-pVTZ
ABC
0.30909 0.11846 0.08702

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.121 0.024 0.000
H2 2.511 0.537 0.881
H3 2.492 -0.999 -0.001
H4 2.511 0.539 -0.880
C5 -1.478 0.569 0.000
O6 -1.371 -0.762 0.000
N7 -0.028 -1.101 -0.000
C8 0.633 0.028 -0.000
C9 -0.254 1.141 -0.000
H10 -0.011 2.189 -0.000
H11 -2.481 0.964 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09171.08851.09173.63983.57922.42591.48802.62433.03844.6969
H21.09171.77191.76174.08484.18693.14742.13592.96373.14075.0866
H31.08851.77191.77194.26793.86952.52172.12333.48104.05325.3460
H41.09171.76171.77194.08464.18723.14802.13592.96323.13955.0864
C53.63984.08484.26794.08461.33542.21142.17911.35092.18581.0782
O63.57924.18693.86954.18721.33541.38472.15372.20653.24972.0525
N72.42593.14742.52173.14802.21141.38471.30802.25333.29053.2065
C81.48802.13592.12332.13592.17912.15371.30801.42342.25563.2517
C92.62432.96373.48102.96321.35092.20652.25331.42341.07632.2340
H103.03843.14074.05323.13952.18583.24973.29052.25561.07632.7572
H114.69695.08665.34605.08641.07822.05253.20653.25172.23402.7572

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 120.230 C1 C8 C9 128.670
H2 C1 H3 108.725 H2 C1 H4 107.585
H2 C1 C8 110.847 H3 C1 H4 108.726
H3 C1 C8 110.032 H4 C1 C8 110.848
C5 O6 N7 108.767 C5 C9 C8 103.494
C5 C9 H10 128.102 O6 C5 C9 110.447
O6 C5 H11 116.110 O6 N7 C8 106.192
N7 C8 C9 111.100 C8 C9 H10 128.403
C9 C5 H11 133.443
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.258      
2 H 0.098      
3 H 0.109      
4 H 0.098      
5 C 0.058      
6 O -0.103      
7 N -0.088      
8 C 0.109      
9 C -0.273      
10 H 0.123      
11 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.522 2.851 0.000 2.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.340 -1.851 0.000
y -1.851 -36.223 -0.000
z 0.000 -0.000 -35.972
Traceless
 xyz
x 6.758 -1.851 0.000
y -1.851 -3.568 -0.000
z 0.000 -0.000 -3.190
Polar
3z2-r2-6.380
x2-y26.884
xy-1.851
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> 135.775
(<r2>)1/2 11.652