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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-244.570535
Energy at 298.15K 
HF Energy-244.570535
Nuclear repulsion energy159.586558
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 B1B95/3-21G*
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' 3358 3207 1.32 95.53 0.10 0.18
2 A' 3328 3178 0.92 55.59 0.63 0.77
3 A' 3306 3157 0.92 74.30 0.39 0.56
4 A' 1584 1512 9.83 3.92 0.12 0.21
5 A' 1428 1364 26.58 23.05 0.45 0.62
6 A' 1388 1325 4.29 5.64 0.16 0.28
7 A' 1241 1185 7.09 8.45 0.31 0.47
8 A' 1161 1109 17.49 8.44 0.58 0.73
9 A' 1092 1043 3.26 7.30 0.13 0.24
10 A' 1047 1000 14.27 2.48 0.71 0.83
11 A' 945 902 2.96 5.24 0.66 0.79
12 A' 908 867 0.64 1.87 0.45 0.62
13 A' 835 797 17.29 7.16 0.15 0.26
14 A" 966 922 1.72 1.65 0.75 0.86
15 A" 922 881 4.68 1.62 0.75 0.86
16 A" 819 782 82.65 1.24 0.75 0.86
17 A" 643 614 10.41 0.12 0.75 0.86
18 A" 592 565 8.67 1.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12781.0 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 12204.6 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 B1B95/3-21G*
ABC
0.32073 0.30821 0.15717

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.122 0.384 0.000
C2 0.637 -0.957 0.000
C3 0.000 1.145 0.000
N4 -0.680 -1.045 0.000
O5 -1.122 0.354 0.000
H6 2.144 0.709 0.000
H7 1.216 -1.863 0.000
H8 -0.167 2.205 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42571.35532.30012.24441.07222.24912.2309
C21.42572.19541.32002.19342.24591.07573.2623
C31.35532.19542.29281.37302.18763.24401.0738
N42.30011.32002.29281.46693.32432.06513.2907
O52.24442.19341.37301.46693.28543.22202.0838
H61.07222.24592.18763.32433.28542.73402.7528
H72.24911.07573.24402.06513.22202.73404.2968
H82.23093.26231.07383.29072.08382.75284.2968

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 113.737 C1 C2 H7 127.531
C1 C3 O5 110.700 C1 C3 H8 133.058
C2 C1 C3 104.237 C2 C1 H6 127.513
C2 N4 O5 103.696 C3 C1 H6 128.249
C3 O5 N4 107.630 N4 C2 H7 118.731
O5 C3 H8 116.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.372      
2 C 0.044      
3 C 0.142      
4 N -0.215      
5 O -0.367      
6 H 0.232      
7 H 0.266      
8 H 0.270      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.911 1.491 0.000 3.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.673 -2.530 0.000
y -2.530 -24.346 0.000
z 0.000 0.000 -30.226
Traceless
 xyz
x -1.387 -2.530 0.000
y -2.530 5.103 0.000
z 0.000 0.000 -3.717
Polar
3z2-r2-7.434
x2-y2-4.327
xy-2.530
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.519 -0.302 0.000
y -0.302 6.231 0.000
z 0.000 0.000 1.760


<r2> (average value of r2) Å2
<r2> 78.451
(<r2>)1/2 8.857