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 (Oxazole)

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-246.086139
Energy at 298.15K-246.090735
HF Energy-246.086139
Nuclear repulsion energy162.905288
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 B3LYP/6-31+G**
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' 3317 3198 0.51      
2 A' 3297 3179 0.80      
3 A' 3279 3161 2.79      
4 A' 1582 1526 14.28      
5 A' 1532 1477 32.48      
6 A' 1365 1316 3.59      
7 A' 1277 1232 0.19      
8 A' 1170 1128 22.90      
9 A' 1128 1087 11.65      
10 A' 1102 1063 7.38      
11 A' 1074 1036 42.34      
12 A' 924 891 18.91      
13 A' 913 881 15.99      
14 A" 875 843 2.69      
15 A" 835 805 28.73      
16 A" 757 730 36.18      
17 A" 660 636 27.48      
18 A" 621 598 5.44      

Unscaled Zero Point Vibrational Energy (zpe) 12853.3 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 12393.1 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 B3LYP/6-31+G**
ABC
0.33478 0.32188 0.16410

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.099 0.314 0.000
C2 0.000 1.104 0.000
N3 1.124 0.463 0.000
C4 0.754 -0.884 0.000
C5 -0.602 -0.965 0.000
H6 -0.162 2.173 0.000
H7 1.487 -1.677 0.000
H8 -1.320 -1.769 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.35322.22822.20651.37212.08173.26392.0949
C21.35321.29442.12642.15471.08113.15393.1619
N32.22821.29441.39702.24022.13992.17063.3101
C42.20652.12641.39701.35833.19141.08012.2550
C51.37212.15472.24021.35833.16862.20731.0782
H62.08171.08112.13993.19143.16864.18854.1087
H73.26393.15392.17061.08012.20734.18852.8088
H82.09493.16193.31012.25501.07824.10872.8088

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 114.593 O1 C2 H6 117.105
O1 C5 C4 107.824 O1 C5 H8 117.008
C2 O1 C5 104.484 C2 N3 C4 104.316
N3 C2 H6 128.302 N3 C4 C5 108.783
N3 C4 H7 121.865 C4 C5 H8 135.168
C5 C4 H7 129.351
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.280      
2 C 0.176      
3 N -0.297      
4 C -0.081      
5 C 0.024      
6 H 0.155      
7 H 0.145      
8 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.323 -0.889 0.000 1.594
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.066 -1.316 0.000
y -1.316 -22.903 0.000
z 0.000 0.000 -30.352
Traceless
 xyz
x -5.439 -1.316 0.000
y -1.316 8.306 0.000
z 0.000 0.000 -2.868
Polar
3z2-r2-5.736
x2-y2-9.163
xy-1.316
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.841 0.130 0.000
y 0.130 7.294 0.000
z 0.000 0.000 4.094


<r2> (average value of r2) Å2
<r2> 76.394
(<r2>)1/2 8.740