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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-242.816047
Energy at 298.15K 
HF Energy-242.816047
Nuclear repulsion energy157.824584
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/STO-3G
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' 3553 3145 24.19 56.41 0.13 0.23
2 A' 3510 3106 27.44 18.85 0.47 0.64
3 A' 3503 3100 14.35 68.33 0.52 0.69
4 A' 1678 1485 7.90 2.02 0.17 0.29
5 A' 1502 1329 31.01 14.42 0.55 0.71
6 A' 1456 1288 1.45 8.60 0.32 0.49
7 A' 1285 1137 2.67 6.53 0.23 0.37
8 A' 1197 1059 6.17 11.94 0.37 0.54
9 A' 1160 1027 1.32 3.40 0.25 0.40
10 A' 1105 978 0.57 6.86 0.64 0.78
11 A' 1032 913 10.80 5.19 0.14 0.24
12 A' 937 829 1.45 4.92 0.74 0.85
13 A' 920 814 1.64 0.12 0.73 0.85
14 A" 927 821 0.23 1.04 0.75 0.86
15 A" 888 785 1.87 1.76 0.75 0.86
16 A" 796 705 31.76 1.09 0.75 0.86
17 A" 635 562 4.75 0.05 0.75 0.86
18 A" 590 522 0.42 0.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13336.5 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 11802.8 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/STO-3G
ABC
0.31046 0.30509 0.15387

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.139 0.386 0.000
C2 0.660 -0.963 0.000
C3 0.000 1.152 0.000
N4 -0.706 -1.035 0.000
O5 -1.138 0.340 0.000
H6 2.176 0.727 0.000
H7 1.246 -1.890 0.000
H8 -0.175 2.235 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.43181.37252.32922.27731.09142.27872.2684
C21.43182.21541.36792.22052.27001.09653.3055
C31.37252.21542.29841.39752.21743.28691.0976
N42.32921.36792.29841.44203.37792.13053.3137
O52.27732.22051.39751.44203.33633.26422.1257
H61.09142.27002.21743.37793.33632.77682.7936
H72.27871.09653.28692.13053.26422.77684.3630
H82.26843.30551.09763.31372.12572.79364.3630

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.586 C1 C2 H7 128.163
C1 C3 O5 110.599 C1 C3 H8 133.066
C2 C1 C3 104.355 C2 C1 H6 127.707
C2 N4 O5 104.388 C3 C1 H6 127.938
C3 O5 N4 108.072 N4 C2 H7 119.251
O5 C3 H8 116.335
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.124      
2 C -0.034      
3 C 0.005      
4 N -0.114      
5 O -0.058      
6 H 0.104      
7 H 0.109      
8 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.884 1.417 0.000 2.358
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.554 -2.160 0.000
y -2.160 -24.197 0.000
z 0.000 0.000 -26.894
Traceless
 xyz
x -1.009 -2.160 0.000
y -2.160 2.527 0.000
z 0.000 0.000 -1.519
Polar
3z2-r2-3.037
x2-y2-2.357
xy-2.160
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.783 -0.260 0.000
y -0.260 4.439 0.000
z 0.000 0.000 0.816


<r2> (average value of r2) Å2
<r2> 78.674
(<r2>)1/2 8.870