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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-285.310479
Energy at 298.15K-285.316957
Nuclear repulsion energy223.999808
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 B3PW91/6-311G*
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 3285 3162 1.29      
2 A 3263 3141 0.32      
3 A 3149 3032 7.95      
4 A 3112 2996 14.91      
5 A 3052 2938 17.12      
6 A 1631 1570 29.04      
7 A 1512 1455 9.67      
8 A 1497 1441 12.51      
9 A 1496 1440 10.01      
10 A 1455 1401 45.81      
11 A 1415 1362 1.02      
12 A 1302 1254 1.67      
13 A 1164 1120 20.39      
14 A 1093 1052 10.73      
15 A 1068 1028 2.76      
16 A 1042 1003 1.53      
17 A 984 947 2.12      
18 A 956 920 9.52      
19 A 917 883 21.31      
20 A 872 840 0.35      
21 A 785 755 49.74      
22 A 668 643 0.12      
23 A 667 642 5.04      
24 A 619 596 4.86      
25 A 336 324 6.81      
26 A 274 263 5.92      
27 A 131 126 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18870.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 18166.8 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 B3PW91/6-311G*
ABC
0.30817 0.11816 0.08679

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.124 0.024 0.000
H2 2.518 0.536 0.883
H3 2.495 -1.001 -0.000
H4 2.518 0.537 -0.882
C5 -1.480 0.569 -0.000
O6 -1.371 -0.763 0.000
N7 -0.028 -1.102 -0.000
C8 0.633 0.028 -0.000
C9 -0.255 1.144 -0.000
H10 -0.010 2.195 -0.000
H11 -2.488 0.957 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09371.09041.09373.64503.58182.42921.49062.62893.04354.7055
H21.09371.77291.76474.09444.19343.15382.14202.97243.14945.1007
H31.09041.77291.77294.27393.87262.52512.12723.48734.06045.3539
H41.09371.76471.77294.09444.19363.15402.14212.97223.14905.1007
C53.64504.09444.27394.09441.33642.21392.18161.35382.19231.0801
O63.58184.19343.87264.19361.33641.38442.15422.20943.25582.0510
N72.42923.15382.52513.15402.21391.38441.31002.25783.29733.2080
C81.49062.14202.12722.14212.18162.15421.31001.42592.26003.2567
C92.62892.97243.48732.97221.35382.20942.25781.42591.07902.2415
H103.04353.14944.06043.14902.19233.25583.29732.26001.07902.7708
H114.70555.10075.35395.10071.08012.05103.20803.25672.24152.7708

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 120.178 C1 C8 C9 128.668
H2 C1 H3 108.528 H2 C1 H4 107.568
H2 C1 C8 111.039 H3 C1 H4 108.528
H3 C1 C8 110.044 H4 C1 C8 111.041
C5 O6 N7 108.908 C5 C9 C8 103.377
C5 C9 H10 128.261 O6 C5 C9 110.424
O6 C5 H11 115.746 O6 N7 C8 106.137
N7 C8 C9 111.154 C8 C9 H10 128.362
C9 C5 H11 133.831
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.709      
2 H 0.242      
3 H 0.256      
4 H 0.242      
5 C 0.079      
6 O -0.192      
7 N -0.176      
8 C 0.255      
9 C -0.449      
10 H 0.215      
11 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.499 2.963 0.000 3.005
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.335 -2.017 0.000
y -2.017 -36.242 -0.000
z 0.000 -0.000 -36.163
Traceless
 xyz
x 6.867 -2.017 0.000
y -2.017 -3.493 -0.000
z 0.000 -0.000 -3.374
Polar
3z2-r2-6.749
x2-y26.906
xy-2.017
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> 136.146
(<r2>)1/2 11.668