return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: B3PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-245.974950
Energy at 298.15K 
HF Energy-245.974950
Nuclear repulsion energy162.107734
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/aug-cc-pVDZ
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' 3301 3184 0.08 127.94 0.10 0.17
2 A' 3276 3160 0.16 52.45 0.66 0.80
3 A' 3254 3138 0.78 92.04 0.37 0.54
4 A' 1606 1549 10.19 3.50 0.02 0.04
5 A' 1481 1428 31.59 38.04 0.19 0.33
6 A' 1401 1351 5.67 4.74 0.05 0.10
7 A' 1243 1199 6.18 17.60 0.09 0.16
8 A' 1153 1112 19.05 1.84 0.49 0.66
9 A' 1127 1087 8.06 14.18 0.08 0.15
10 A' 1041 1004 6.70 2.77 0.63 0.78
11 A' 931 898 19.87 2.83 0.36 0.53
12 A' 916 884 0.55 1.58 0.59 0.74
13 A' 911 879 18.39 4.48 0.17 0.28
14 A" 899 867 7.98 0.21 0.75 0.86
15 A" 865 835 0.13 0.58 0.75 0.86
16 A" 771 744 62.37 0.07 0.75 0.86
17 A" 650 627 1.32 0.21 0.75 0.86
18 A" 609 587 14.19 0.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12716.4 cm-1
Scaled (by 0.9646) Zero Point Vibrational Energy (zpe) 12266.3 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/aug-cc-pVDZ
ABC
0.32769 0.32125 0.16222

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.129 0.364 0.000
C2 0.615 -0.963 0.000
C3 0.000 1.126 0.000
N4 -0.697 -0.984 0.000
O5 -1.089 0.343 0.000
H6 2.161 0.693 0.000
H7 1.155 -1.906 0.000
H8 -0.181 2.196 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42301.36162.26982.21791.08372.27062.2519
C21.42302.17721.31192.14682.26571.08733.2574
C31.36162.17722.22251.34132.20403.24471.0853
N42.26981.31192.22251.38443.31422.06893.2220
O52.21792.14681.34131.38443.26913.17762.0633
H61.08372.26572.20403.31423.26912.78732.7829
H72.27061.08733.24472.06893.17762.78734.3144
H82.25193.25741.08533.22202.06332.78294.3144

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.118 C1 C2 H7 129.025
C1 C3 O5 110.282 C1 C3 H8 133.630
C2 C1 C3 102.849 C2 C1 H6 128.844
C2 N4 O5 105.507 C3 C1 H6 128.307
C3 O5 N4 109.244 N4 C2 H7 118.856
O5 C3 H8 116.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.909      
2 C 0.351      
3 C 0.458      
4 N -0.204      
5 O -0.501      
6 H -0.403      
7 H -0.271      
8 H -0.339      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.580 1.519 0.000 2.994
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.574 -2.706 0.000
y -2.706 -25.113 0.000
z 0.000 0.000 -30.234
Traceless
 xyz
x -0.901 -2.706 0.000
y -2.706 4.291 0.000
z 0.000 0.000 -3.390
Polar
3z2-r2-6.781
x2-y2-3.461
xy-2.706
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.098 -0.081 0.000
y -0.081 7.779 0.000
z 0.000 0.000 4.472


<r2> (average value of r2) Å2
<r2> 76.937
(<r2>)1/2 8.771